Pennsylvania pollen and allergy seasons
July outlookModerate
Pennsylvania has a spring tree season, grass in early summer, and a heavy ragweed season in the fall.
Twelve month pollen calendar
J
F
M
A
M
J
J
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A
S
O
N
D
LowModerateHighVery high
Dominant species in July
Grass
Typical peak in July
No clear peak this month
Worst month of the year
September
Best month of the year
January
What is active in July
Grass
Cities in Pennsylvania
| City | Today | Worst today | Typical in July |
|---|---|---|---|
| Pittsburgh | Very Highas of Jul 16 | Grass | Moderate |
| Lancaster | Very Highas of Jul 16 | Grass | Moderate |
| Reading | Very Highas of Jul 16 | Grass | Moderate |
| York | Very Highas of Jul 16 | Grass | Moderate |
| Erie | Very Highas of Jul 16 | Grass | Moderate |
| Bethlehem | Very Highas of Jul 16 | Grass | Moderate |
| Wilkes-Barre | Very Highas of Jul 16 | Grass | Moderate |
| Hazleton | Very Highas of Jul 16 | Grass | Moderate |
| Easton | Very Highas of Jul 16 | Grass | Moderate |
| Williamsport | Very Highas of Jul 16 | Grass | Moderate |
| Chambersburg | Very Highas of Jul 16 | Grass | Moderate |
| Carlisle | Very Highas of Jul 16 | Grass | Moderate |
| Murrysville | Very Highas of Jul 16 | Grass | Moderate |
| West Mifflin | Very Highas of Jul 16 | Grass | Moderate |
| Colonial Park | Very Highas of Jul 16 | Grass | Moderate |
| Franklin Park | Very Highas of Jul 16 | Grass | Moderate |
| Greensburg | Very Highas of Jul 16 | Grass | Moderate |
| Hershey | Very Highas of Jul 16 | Grass | Moderate |
| Wilkinsburg | Very Highas of Jul 16 | Grass | Moderate |
| Willow Grove | Very Highas of Jul 16 | Grass | Moderate |
| Ephrata | Very Highas of Jul 16 | Grass | Moderate |
| Montgomeryville | Very Highas of Jul 16 | Grass | Moderate |
| Kingston | Very Highas of Jul 16 | Grass | Moderate |
| St. Marys | Very Highas of Jul 16 | Grass | Moderate |
| Yeadon | Very Highas of Jul 16 | Grass | Moderate |
| New Kensington | Very Highas of Jul 16 | Grass | Moderate |
| Lower Burrell | Very Highas of Jul 16 | Grass | Moderate |
| Union City | Very Highas of Jul 16 | Grass | Moderate |
| Masontown | Very Highas of Jul 16 | Grass | Moderate |
| Bentley Creek | Very Highas of Jul 16 | Grass | Moderate |
| Whitehall | Very Highas of Jul 16 | Grass | Moderate |
| Saxonburg | Very Highas of Jul 16 | Grass | Moderate |
| Rochester | Very Highas of Jul 16 | Grass | Moderate |
| Clarion | Very Highas of Jul 16 | Grass | Moderate |
| Devon | Very Highas of Jul 16 | Grass | Moderate |
| Dormont | Very Highas of Jul 16 | Grass | Moderate |
| Lyndora | Very Highas of Jul 16 | Grass | Moderate |
| Duke Center | Very Highas of Jul 16 | Grass | Moderate |
| Parkville | Very Highas of Jul 16 | Grass | Moderate |
| Enola | Very Highas of Jul 16 | Grass | Moderate |
| Columbia | Very Highas of Jul 16 | Grass | Moderate |
| Coraopolis | Very Highas of Jul 16 | Grass | Moderate |
| Port Trevorton | Very Highas of Jul 16 | Grass | Moderate |
| Chester Hill | Very Highas of Jul 16 | Grass | Moderate |
| Bethel | Very Highas of Jul 16 | Grass | Moderate |
| West Sunbury | Very Highas of Jul 16 | Grass | Moderate |
| Mill Hall | Very Highas of Jul 16 | Grass | Moderate |
| Shippensburg | Very Highas of Jul 16 | Grass | Moderate |
| Gwynedd Valley | Very Highas of Jul 16 | Grass | Moderate |
| Martinsburg | Very Highas of Jul 16 | Grass | Moderate |
| Ross Common | Very Highas of Jul 16 | Grass | Moderate |
| Spring House | Very Highas of Jul 16 | Grass | Moderate |
| Spring Grove | Very Highas of Jul 16 | Grass | Moderate |
| Morrisville | Very Highas of Jul 16 | Grass | Moderate |
| Mohnton | Very Highas of Jul 16 | Grass | Moderate |
| Connellsville | Very Highas of Jul 16 | Grass | Moderate |
| New Hope | Very Highas of Jul 16 | Grass | Moderate |
| Mechanicsburg | Very Highas of Jul 16 | Grass | Moderate |
| Cranberry Township | Very Highas of Jul 16 | Grass | Moderate |
| Zelienople | Very Highas of Jul 16 | Grass | Moderate |
| Springfield | Very Highas of Jul 16 | Grass | Moderate |
| Monongahela | Very Highas of Jul 16 | Grass | Moderate |
| Northern Cambria | Very Highas of Jul 16 | Grass | Moderate |
| Downingtown | Very Highas of Jul 16 | Grass | Moderate |
| Flourtown | Very Highas of Jul 16 | Grass | Moderate |
| Southampton | Very Highas of Jul 16 | Grass | Moderate |
| Bath | Very Highas of Jul 16 | Grass | Moderate |
| Canonsburg | Very Highas of Jul 16 | Grass | Moderate |
| Furlong | Very Highas of Jul 16 | Grass | Moderate |
| Annville | Very Highas of Jul 16 | Grass | Moderate |
| Clairton | Very Highas of Jul 16 | Grass | Moderate |
| Glassport | Very Highas of Jul 16 | Grass | Moderate |
| Fawn Grove | Very Highas of Jul 16 | Grass | Moderate |
| Paoli | Very Highas of Jul 16 | Grass | Moderate |
| Airville | Very Highas of Jul 16 | Grass | Moderate |
| Selinsgrove | Very Highas of Jul 16 | Grass | Moderate |
| Julian | Very Highas of Jul 16 | Grass | Moderate |
| Ridley Park | Very Highas of Jul 16 | Grass | Moderate |
| Beaver | Very Highas of Jul 16 | Grass | Moderate |
| Factoryville | Very Highas of Jul 16 | Grass | Moderate |
| Gettysburg | Very Highas of Jul 16 | Grass | Moderate |
| Blakeslee | Very Highas of Jul 16 | Grass | Moderate |
| Greencastle | Very Highas of Jul 16 | Grass | Moderate |
| Millerstown | Very Highas of Jul 16 | Grass | Moderate |
| Warminster | Very Highas of Jul 16 | Grass | Moderate |
| Kittanning | Very Highas of Jul 16 | Grass | Moderate |
| Landenberg | Very Highas of Jul 16 | Grass | Moderate |
| Boyertown | Very Highas of Jul 16 | Grass | Moderate |
| Topton | Very Highas of Jul 16 | Grass | Moderate |
| Willow Street | Very Highas of Jul 16 | Grass | Moderate |
| Hatboro | Very Highas of Jul 16 | Grass | Moderate |
| New Holland | Very Highas of Jul 16 | Grass | Moderate |
| Media | Very Highas of Jul 16 | Grass | Moderate |
| Wayne | Very Highas of Jul 16 | Grass | Moderate |
| Effort | Very Highas of Jul 16 | Grass | Moderate |
| Coopersburg | Very Highas of Jul 16 | Grass | Moderate |
| Doylestown | Very Highas of Jul 16 | Grass | Moderate |
| Quakertown | Very Highas of Jul 16 | Grass | Moderate |
| Tioga | Very Highas of Jul 16 | Grass | Moderate |
| Hatfield | Very Highas of Jul 16 | Grass | Moderate |
| Leesport | Very Highas of Jul 16 | Grass | Moderate |
| Fayetteville | Very Highas of Jul 16 | Grass | Moderate |
| Villanova | Very Highas of Jul 16 | Grass | Moderate |
| Clifton Heights | Very Highas of Jul 16 | Grass | Moderate |
| Lewisburg | Very Highas of Jul 16 | Grass | Moderate |
| Yardley | Very Highas of Jul 16 | Grass | Moderate |
| Spring City | Very Highas of Jul 16 | Grass | Moderate |
| Trafford | Very Highas of Jul 16 | Grass | Moderate |
| Pipersville | Very Highas of Jul 16 | Grass | Moderate |
| Clarks Summit | Very Highas of Jul 16 | Grass | Moderate |
| Ambler | Very Highas of Jul 16 | Grass | Moderate |
| Kennett Square | Very Highas of Jul 16 | Grass | Moderate |
| Washington Crossing | Very Highas of Jul 16 | Grass | Moderate |
| Bally | Very Highas of Jul 16 | Grass | Moderate |
| Huntingdon Valley | Very Highas of Jul 16 | Grass | Moderate |
| Telford | Very Highas of Jul 16 | Grass | Moderate |
| Bellefonte | Very Highas of Jul 16 | Grass | Moderate |
| Waynesboro | Very Highas of Jul 16 | Grass | Moderate |
| Marcus Hook | Very Highas of Jul 16 | Grass | Moderate |
| Marysville | Very Highas of Jul 16 | Grass | Moderate |
| Warrington | Very Highas of Jul 16 | Grass | Moderate |
| Stroudsburg | Very Highas of Jul 16 | Grass | Moderate |
| Muncy | Very Highas of Jul 16 | Grass | Moderate |
| Brookhaven | Very Highas of Jul 16 | Grass | Moderate |
| Collegeville | Very Highas of Jul 16 | Grass | Moderate |
| Oley | Very Highas of Jul 16 | Grass | Moderate |
| Palmerton | Very Highas of Jul 16 | Grass | Moderate |
| North East | Very Highas of Jul 16 | Grass | Moderate |
| Elverson | Very Highas of Jul 16 | Grass | Moderate |
| Middletown | Very Highas of Jul 16 | Grass | Moderate |
| Green Lane | Very Highas of Jul 16 | Grass | Moderate |
| Newtown Square | Very Highas of Jul 16 | Grass | Moderate |
| Swarthmore | Very Highas of Jul 16 | Grass | Moderate |
| Hummelstown | Very Highas of Jul 16 | Grass | Moderate |
| Slatington | Very Highas of Jul 16 | Grass | Moderate |
| West Grove | Very Highas of Jul 16 | Grass | Moderate |
| Larksville | Very Highas of Jul 16 | Grass | Moderate |
| Bristol | Very Highas of Jul 16 | Grass | Moderate |
| Sayre | Very Highas of Jul 16 | Grass | Moderate |
| Gouldsboro | Very Highas of Jul 16 | Grass | Moderate |
| Oreland | Very Highas of Jul 16 | Grass | Moderate |
| Lititz | Very Highas of Jul 16 | Grass | Moderate |
| Harborcreek | Very Highas of Jul 16 | Grass | Moderate |
| Jim Thorpe | Very Highas of Jul 16 | Grass | Moderate |
| Birdsboro | Very Highas of Jul 16 | Grass | Moderate |
| Denver | Very Highas of Jul 16 | Grass | Moderate |
| Honey Brook | Very Highas of Jul 16 | Grass | Moderate |
| Gibsonia | Very Highas of Jul 16 | Grass | Moderate |
| Delmont | Very Highas of Jul 16 | Grass | Moderate |
| Wynnewood | Very Highas of Jul 16 | Grass | Moderate |
| Mcmurray | Very Highas of Jul 16 | Grass | Moderate |
| York Haven | Very Highas of Jul 16 | Grass | Moderate |
| Fairfield | Very Highas of Jul 16 | Grass | Moderate |
| Mount Joy | Very Highas of Jul 16 | Grass | Moderate |
| Wernersville | Very Highas of Jul 16 | Grass | Moderate |
| Mc Donald | Very Highas of Jul 16 | Grass | Moderate |
| Penbrook | Very Highas of Jul 16 | Grass | Moderate |
| Quarryville | Very Highas of Jul 16 | Grass | Moderate |
| Berwick | Very Highas of Jul 16 | Grass | Moderate |
| Oil City | Very Highas of Jul 16 | Grass | Moderate |
| Catasauqua | Very Highas of Jul 16 | Grass | Moderate |
| Freemansburg | Very Highas of Jul 16 | Grass | Moderate |
| Coudersport | Very Highas of Jul 16 | Grass | Moderate |
| Havertown | Very Highas of Jul 16 | Grass | Moderate |
| Blairsville | Very Highas of Jul 16 | Grass | Moderate |
| Mckees Rocks | Very Highas of Jul 16 | Grass | Moderate |
| Sunbury | Very Highas of Jul 16 | Grass | Moderate |
| Aston Mills | Very Highas of Jul 16 | Grass | Moderate |
| Export | Very Highas of Jul 16 | Grass | Moderate |
| University Park | Very Highas of Jul 16 | Grass | Moderate |
| Aldan | Very Highas of Jul 16 | Grass | Moderate |
| Tunkhannock | Very Highas of Jul 16 | Grass | Moderate |
| Eighty Four | Very Highas of Jul 16 | Grass | Moderate |
| West Newton | Very Highas of Jul 16 | Grass | Moderate |
| Neffsville | Very Highas of Jul 16 | Grass | Moderate |
| Hempfield | Very Highas of Jul 16 | Grass | Moderate |
| Tatamy | Very Highas of Jul 16 | Grass | Moderate |
| Huntingdon | Very Highas of Jul 16 | Grass | Moderate |
| Garnet Valley | Very Highas of Jul 16 | Grass | Moderate |
| Center Valley | Very Highas of Jul 16 | Grass | Moderate |
| Stockdale | Very Highas of Jul 16 | Grass | Moderate |
| Roscoe | Very Highas of Jul 16 | Grass | Moderate |
| Bridgeville | Very Highas of Jul 16 | Grass | Moderate |
| Glen Mills | Very Highas of Jul 16 | Grass | Moderate |
| Frederick | Very Highas of Jul 16 | Grass | Moderate |
| Gwynedd | Very Highas of Jul 16 | Grass | Moderate |
| Uniontown | Very Highas of Jul 16 | Grass | Moderate |
| Wyncote | Very Highas of Jul 16 | Grass | Moderate |
| Blandon | Very Highas of Jul 16 | Grass | Moderate |
| Northumberland | Very Highas of Jul 16 | Grass | Moderate |
| Lykens | Very Highas of Jul 16 | Grass | Moderate |
| Shippenville | Very Highas of Jul 16 | Grass | Moderate |
| Homeacre | Very Highas of Jul 16 | Grass | Moderate |
| Nicetown | Very Highas of Jul 16 | Grass | Moderate |
| Lehighton | Very Highas of Jul 16 | Grass | Moderate |
| Milford | Very Highas of Jul 16 | Grass | Moderate |
| Shohola | Very Highas of Jul 16 | Grass | Moderate |
| Honesdale | Very Highas of Jul 16 | Grass | Moderate |
| Delano | Very Highas of Jul 16 | Grass | Moderate |
| Girard | Noneas of Jul 16 | None | Moderate |
| Philadelphia | No live reading | Not available | Moderate |
| Allentown | No live reading | Not available | Moderate |
| Harrisburg | No live reading | Not available | Moderate |
| Scranton | No live reading | Not available | Moderate |
| State College | No live reading | Not available | Moderate |
| Altoona | No live reading | Not available | Moderate |
| Lebanon | No live reading | Not available | Moderate |
| Levittown | No live reading | Not available | Moderate |
| Norristown | No live reading | Not available | Moderate |
| Chester | No live reading | Not available | Moderate |
| Bethel Park | No live reading | Not available | Moderate |
| Drexel Hill | No live reading | Not available | Moderate |
| Monroeville | No live reading | Not available | Moderate |
| Plum | No live reading | Not available | Moderate |
| King Of Prussia | No live reading | Not available | Moderate |
| Pottstown | No live reading | Not available | Moderate |
| Allison Park | No live reading | Not available | Moderate |
| New Castle | No live reading | Not available | Moderate |
| Baldwin | No live reading | Not available | Moderate |
| West Chester | No live reading | Not available | Moderate |
| Phoenixville | No live reading | Not available | Moderate |
| Lansdale | No live reading | Not available | Moderate |
| Johnstown | No live reading | Not available | Moderate |
| Mckeesport | No live reading | Not available | Moderate |
| Fullerton | No live reading | Not available | Moderate |
| Hanover | No live reading | Not available | Moderate |
| Hermitage | No live reading | Not available | Moderate |
| Weigelstown | No live reading | Not available | Moderate |
| Indiana | No live reading | Not available | Moderate |
| Ardmore | No live reading | Not available | Moderate |
| Dunmore | No live reading | Not available | Moderate |
| Carnot-Moon | No live reading | Not available | Moderate |
| Pottsville | No live reading | Not available | Moderate |
| Washington | No live reading | Not available | Moderate |
| Coatesville | No live reading | Not available | Moderate |
| Butler | No live reading | Not available | Moderate |
| Sharon | No live reading | Not available | Moderate |
| Bloomsburg | No live reading | Not available | Moderate |
| Meadville | No live reading | Not available | Moderate |
| Jefferson Hills | No live reading | Not available | Moderate |
| Elizabethtown | No live reading | Not available | Moderate |
| Mountain Top | No live reading | Not available | Moderate |
| Emmaus | No live reading | Not available | Moderate |
| Progress | No live reading | Not available | Moderate |
| Wyomissing | No live reading | Not available | Moderate |
| Bechtelsville | No live reading | Not available | Moderate |
| Manheim | No live reading | Not available | Moderate |
| Kutztown | No live reading | Not available | Moderate |
| Tamaqua | No live reading | Not available | Moderate |
| Mexico | No live reading | Not available | Moderate |
| New Britain | No live reading | Not available | Moderate |
| Warren | No live reading | Not available | Moderate |
| Conneaut Lake | No live reading | Not available | Moderate |
| Greenock | No live reading | Not available | Moderate |
| Titusville | No live reading | Not available | Moderate |
| Lakemont | No live reading | Not available | Moderate |
| Cresco | No live reading | Not available | Moderate |
| East Berlin | No live reading | Not available | Moderate |
| Nescopeck | No live reading | Not available | Moderate |
| Nazareth | No live reading | Not available | Moderate |
| Lionville | No live reading | Not available | Moderate |
| Mercersburg | No live reading | Not available | Moderate |
| Pocono Summit | No live reading | Not available | Moderate |
| Hellertown | No live reading | Not available | Moderate |
| Kingsley | No live reading | Not available | Moderate |
| Montrose | No live reading | Not available | Moderate |
| Dillsburg | No live reading | Not available | Moderate |
| Philipsburg | No live reading | Not available | Moderate |
| Millville | No live reading | Not available | Moderate |
| Kunkletown | No live reading | Not available | Moderate |
| Mount Union | No live reading | Not available | Moderate |
| White Haven | No live reading | Not available | Moderate |
| Saylorsburg | No live reading | Not available | Moderate |
| Hollidaysburg | No live reading | Not available | Moderate |
| Danville | No live reading | Not available | Moderate |
| Luzerne | No live reading | Not available | Moderate |
| Somerset | No live reading | Not available | Moderate |
| Mansfield | No live reading | Not available | Moderate |
| Vandergrift | No live reading | Not available | Moderate |
| Millrift | No live reading | Not available | Moderate |
| Norwood | No live reading | Not available | Moderate |
| Harleysville | No live reading | Not available | Moderate |
| Wellsboro | No live reading | Not available | Moderate |
| Newton | No live reading | Not available | Moderate |
| Mackeyville | No live reading | Not available | Moderate |
| Harrison City | No live reading | Not available | Moderate |
| Rutherford | No live reading | Not available | Moderate |
| Reedsville | No live reading | Not available | Moderate |
| Carmichaels | No live reading | Not available | Moderate |
| Wyndmoor | No live reading | Not available | Moderate |
| East Petersburg | No live reading | Not available | Moderate |
| Leeper | No live reading | Not available | Moderate |
| Clearfield | No live reading | Not available | Moderate |
| Schuylkill Haven | No live reading | Not available | Moderate |
| Fleetwood | No live reading | Not available | Moderate |
| Pricedale | No live reading | Not available | Moderate |
| Conshohocken | No live reading | Not available | Moderate |
| Oxford | No live reading | Not available | Moderate |
| Fountainville | No live reading | Not available | Moderate |
| Lemont Furnace | No live reading | Not available | Moderate |
| Akron | No live reading | Not available | Moderate |
| Freeland | No live reading | Not available | Moderate |
| Oaks | No live reading | Not available | Moderate |
| Towanda | No live reading | Not available | Moderate |
| Delta | No live reading | Not available | Moderate |
| Ashland | No live reading | Not available | Moderate |
| Edinboro | No live reading | Not available | Moderate |
| Dingmans Ferry | No live reading | Not available | Moderate |
| Saint Marys | No live reading | Not available | Moderate |
| Nanticoke | No live reading | Not available | Moderate |
| Horsham | No live reading | Not available | Moderate |
| Ambridge | No live reading | Not available | Moderate |
| Richboro | No live reading | Not available | Moderate |
| New Eagle | No live reading | Not available | Moderate |
| Berwyn | No live reading | Not available | Moderate |
| Forest City | No live reading | Not available | Moderate |
| Benton | No live reading | Not available | Moderate |
| Peckville | No live reading | Not available | Moderate |
| Lewisberry | No live reading | Not available | Moderate |
| Broomall | No live reading | Not available | Moderate |
| Dover | No live reading | Not available | Moderate |
| Waymart | No live reading | Not available | Moderate |
| Jermyn | No live reading | Not available | Moderate |
| Duquesne | No live reading | Not available | Moderate |
| Darby | No live reading | Not available | Moderate |
| Tyrone | No live reading | Not available | Moderate |
| Plymouth | No live reading | Not available | Moderate |
| Lansdowne | No live reading | Not available | Moderate |
| Perkiomenville | No live reading | Not available | Moderate |
| Radnor | No live reading | Not available | Moderate |
| Venetia | No live reading | Not available | Moderate |
| Evans City | No live reading | Not available | Moderate |
| Bala Cynwyd | No live reading | Not available | Moderate |
| Camp Hill | No live reading | Not available | Moderate |
| Oakdale | No live reading | Not available | Moderate |
| Abington | No live reading | Not available | Moderate |
| Sadsburyville | No live reading | Not available | Moderate |
| Feasterville Trevose | No live reading | Not available | Moderate |
| Highspire | No live reading | Not available | Moderate |
| Palmyra | No live reading | Not available | Moderate |
| Utica | No live reading | Not available | Moderate |
| Susquehanna | No live reading | Not available | Moderate |
| Hawley | No live reading | Not available | Moderate |
| Jamison | No live reading | Not available | Moderate |
| Lincoln University | No live reading | Not available | Moderate |
| Harmony | No live reading | Not available | Moderate |
| Chadds Ford | No live reading | Not available | Moderate |
| Freeport | No live reading | Not available | Moderate |
| Fort Washington | No live reading | Not available | Moderate |
| Pittston | No live reading | Not available | Moderate |
| Drums | No live reading | Not available | Moderate |
| Chalfont | No live reading | Not available | Moderate |
| Newville | No live reading | Not available | Moderate |
| East Texas | No live reading | Not available | Moderate |
| Elkins Park | No live reading | Not available | Moderate |
| Glenside | No live reading | Not available | Moderate |
| Pequea | No live reading | Not available | Moderate |
| East Earl | No live reading | Not available | Moderate |
| Sharon Hill | No live reading | Not available | Moderate |
| Mountville | No live reading | Not available | Moderate |
| Hopeland | No live reading | Not available | Moderate |
| Ligonier | No live reading | Not available | Moderate |
| Schnecksville | No live reading | Not available | Moderate |
| Newtown | No live reading | Not available | Moderate |
| Pennsburg | No live reading | Not available | Moderate |
| Wallingford | No live reading | Not available | Moderate |
| Red Lion | No live reading | Not available | Moderate |
| Macungie | No live reading | Not available | Moderate |
| Lake Ariel | No live reading | Not available | Moderate |
| Breinigsville | No live reading | Not available | Moderate |
| Equinunk | No live reading | Not available | Moderate |
| Narberth | No live reading | Not available | Moderate |
| Wexford | No live reading | Not available | Moderate |
| Belle Vernon | No live reading | Not available | Moderate |
| Pennsylvania Furnace | No live reading | Not available | Moderate |
| Reynoldsville | No live reading | Not available | Moderate |
| Aston | No live reading | Not available | Moderate |
| Malvern | No live reading | Not available | Moderate |
| Chester Springs | No live reading | Not available | Moderate |
| Valley Forge | No live reading | Not available | Moderate |
| Cogan Station | No live reading | Not available | Moderate |
| Bentleyville | No live reading | Not available | Moderate |
| Charleroi | No live reading | Not available | Moderate |
| Flinton | No live reading | Not available | Moderate |
| Swiftwater | No live reading | Not available | Moderate |
| Clinton | No live reading | Not available | Moderate |
| Gap | No live reading | Not available | Moderate |
| Exton | No live reading | Not available | Moderate |
| Sewickley | No live reading | Not available | Moderate |
| Lemoyne | No live reading | Not available | Moderate |
| Perkasie | No live reading | Not available | Moderate |
| Landisville | No live reading | Not available | Moderate |
| Greentown | No live reading | Not available | Moderate |
| Glenshaw | No live reading | Not available | Moderate |
| Dallastown | No live reading | Not available | Moderate |
| Hinkletown | No live reading | Not available | Moderate |
| Zionsville | No live reading | Not available | Moderate |
| Lafayette Hill | No live reading | Not available | Moderate |
| Haverford | No live reading | Not available | Moderate |
| Royersford | No live reading | Not available | Moderate |
| Falls Creek | No live reading | Not available | Moderate |
| Phillipsburg | No live reading | Not available | Moderate |
| Langhorne | No live reading | Not available | Moderate |
| Mars | No live reading | Not available | Moderate |
| Ivyland | No live reading | Not available | Moderate |
| Carbondale | No live reading | Not available | Moderate |
| Fountain Hill | No live reading | Not available | Moderate |
| Plymouth Meeting | No live reading | Not available | Moderate |
| Bedford | No live reading | Not available | Moderate |
| Irwin | No live reading | Not available | Moderate |
| Bryn Mawr | No live reading | Not available | Moderate |
| Woodbury | No live reading | Not available | Moderate |
| Hummels Wharf | No live reading | Not available | Moderate |
| Littlestown | No live reading | Not available | Moderate |
| Camden | No live reading | Not available | Moderate |
| Du Bois | No live reading | Not available | Moderate |
| Goshen | No live reading | Not available | Moderate |
| Duncansville | No live reading | Not available | Moderate |
| Schwenksville | No live reading | Not available | Moderate |
| Unityville | No live reading | Not available | Moderate |
| Mercer | No live reading | Not available | Moderate |
| Avondale | No live reading | Not available | Moderate |
| Albrightsville | No live reading | Not available | Moderate |
| Knoxville | No live reading | Not available | Moderate |
| Chinchilla | No live reading | Not available | Moderate |
| Franklin | No live reading | Not available | Moderate |
| Lewistown | No live reading | Not available | Moderate |
| Roulette | No live reading | Not available | Moderate |
| Beech Creek | No live reading | Not available | Moderate |
| Sipesville | No live reading | Not available | Moderate |
| Mainland | No live reading | Not available | Moderate |
| Carnegie | No live reading | Not available | Moderate |
| Latrobe | No live reading | Not available | Moderate |
| Middleburg | No live reading | Not available | Moderate |
| Morton | No live reading | Not available | Moderate |
| Beaver Falls | No live reading | Not available | Moderate |
| Bensalem | No live reading | Not available | Moderate |
| Lake Naomi Estates | No live reading | Not available | Moderate |
| Leola | No live reading | Not available | Moderate |
| Cambridge Springs | No live reading | Not available | Moderate |
| North Wales | No live reading | Not available | Moderate |
| Dallas | No live reading | Not available | Moderate |
| Bridgeport | No live reading | Not available | Moderate |
| Valencia | No live reading | Not available | Moderate |
| Millersville | No live reading | Not available | Moderate |
| Mahanoy City | No live reading | Not available | Moderate |
| Linglestown | No live reading | Not available | Moderate |
| Monaca | No live reading | Not available | Moderate |
| Millersburg | No live reading | Not available | Moderate |
| Shartlesville | No live reading | Not available | Moderate |
| Hopewell | No live reading | Not available | Moderate |
| Kempton | No live reading | Not available | Moderate |
Today and worst today come from live readings where available. Typical shows the usual level for this month from the seasonal profile.
The Pennsylvania allergy season
Allergy levels in Pennsylvania peak in September, when ragweed pollen runs highest. The season moves through tree pollen around April, grass in June, weed pollen such as ragweed in September. Levels start to climb around March. The lowest pollen levels of the year arrive in January.
Common questions
When does allergy season start in Pennsylvania?
Pollen levels in Pennsylvania usually begin climbing in March and reach their highest point in September.
What is the worst month for allergies in Pennsylvania?
September is typically the worst month in Pennsylvania, driven by ragweed pollen.
When does ragweed season end in Pennsylvania?
Ragweed pollen in Pennsylvania usually fades by the end of October, after the first hard frost in colder areas.
When is the best time for allergies in Pennsylvania?
January usually brings the lowest pollen levels of the year in Pennsylvania.