Indiana pollen and allergy seasons
July outlookModerate
Indiana has a spring tree season and a heavy ragweed season in late summer and early fall.
Twelve month pollen calendar
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F
M
A
M
J
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A
S
O
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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 Indiana
| City | Today | Worst today | Typical in July |
|---|---|---|---|
| Bloomington | Very Highas of Jul 15 | Grass | Moderate |
| Carmel | Very Highas of Jul 15 | Grass | Moderate |
| Gary | Very Highas of Jul 15 | Grass | Moderate |
| Kokomo | Very Highas of Jul 15 | Grass | Moderate |
| Westfield | Very Highas of Jul 15 | Grass | Moderate |
| Lawrence | Very Highas of Jul 15 | Grass | Moderate |
| Portage | Very Highas of Jul 15 | Grass | Moderate |
| Merrillville | Very Highas of Jul 15 | Grass | Moderate |
| Valparaiso | Very Highas of Jul 15 | Grass | Moderate |
| Crown Point | Very Highas of Jul 15 | Grass | Moderate |
| Schererville | Very Highas of Jul 15 | Grass | Moderate |
| East Chicago | Very Highas of Jul 15 | Grass | Moderate |
| Griffith | Very Highas of Jul 15 | Grass | Moderate |
| Lake Station | Very Highas of Jul 15 | Grass | Moderate |
| Whitestown | Very Highas of Jul 15 | Grass | Moderate |
| Edinburgh | Very Highas of Jul 15 | Grass | Moderate |
| Fortville | Very Highas of Jul 15 | Grass | Moderate |
| Spencer | Very Highas of Jul 15 | Grass | Moderate |
| Cloverdale | Very Highas of Jul 15 | Grass | Moderate |
| Greencastle | Very Highas of Jul 15 | Grass | Moderate |
| Warren Park | Very Highas of Jul 15 | Grass | Moderate |
| Union City | Very Highas of Jul 15 | Grass | Moderate |
| Kouts | Very Highas of Jul 15 | Grass | Moderate |
| Darlington | Very Highas of Jul 15 | Grass | Moderate |
| Stockwell | Very Highas of Jul 15 | Grass | Moderate |
| Forest | Very Highas of Jul 15 | Grass | Moderate |
| Centerville | Very Highas of Jul 15 | Grass | Moderate |
| Indianapolis | Highas of Jul 15 | Grass | Moderate |
| Lafayette | Highas of Jul 15 | Grass | Moderate |
| Hammond | Highas of Jul 15 | Grass | Moderate |
| Columbus | Highas of Jul 15 | Grass | Moderate |
| Brownsburg | Highas of Jul 15 | Grass | Moderate |
| Franklin | Highas of Jul 15 | Grass | Moderate |
| St. John | Highas of Jul 15 | Grass | Moderate |
| Crawfordsville | Highas of Jul 15 | Grass | Moderate |
| Chesterton | Highas of Jul 15 | Grass | Moderate |
| Bargersville | Highas of Jul 15 | Grass | Moderate |
| Mccordsville | Highas of Jul 15 | Grass | Moderate |
| Noblesville | Moderateas of Jul 15 | Grass | Moderate |
| Greenwood | Moderateas of Jul 15 | Grass | Moderate |
| West Lafayette | Moderateas of Jul 15 | Grass | Moderate |
| Plainfield | Moderateas of Jul 15 | Grass | Moderate |
| Richmond | Moderateas of Jul 15 | Grass | Moderate |
| Zionsville | Moderateas of Jul 15 | Grass | Moderate |
| Hobart | Moderateas of Jul 15 | Grass | Moderate |
| Highland | Moderateas of Jul 15 | Grass | Moderate |
| Munster | Moderateas of Jul 15 | Grass | Moderate |
| Avon | Moderateas of Jul 15 | Grass | Moderate |
| Lebanon | Moderateas of Jul 15 | Grass | Moderate |
| Dyer | Moderateas of Jul 15 | Grass | Moderate |
| Frankfort | Moderateas of Jul 15 | Grass | Moderate |
| Beech Grove | Moderateas of Jul 15 | Grass | Moderate |
| Cedar Lake | Moderateas of Jul 15 | Grass | Moderate |
| Speedway | Moderateas of Jul 15 | Grass | Moderate |
| Connersville | Moderateas of Jul 15 | Grass | Moderate |
| Martinsville | Moderateas of Jul 15 | Grass | Moderate |
| Aurora | Moderateas of Jul 15 | Grass | Moderate |
| Hebron | Moderateas of Jul 15 | Grass | Moderate |
| Clayton | Moderateas of Jul 15 | Grass | Moderate |
| West College Corner | Moderateas of Jul 15 | Grass | Moderate |
| Nashville | Moderateas of Jul 15 | Grass | Moderate |
| Centennial | Moderateas of Jul 15 | Grass | Moderate |
| Saint John | Moderateas of Jul 15 | Grass | Moderate |
| Southport | Moderateas of Jul 15 | Grass | Moderate |
| Stanford | Moderateas of Jul 15 | Grass | Moderate |
| Ellettsville | Moderateas of Jul 15 | Grass | Moderate |
| Batesville | Moderateas of Jul 15 | Grass | Moderate |
| Mooresville | Moderateas of Jul 15 | Grass | Moderate |
| Lawrenceburg | Moderateas of Jul 15 | Grass | Moderate |
| Danville | Moderateas of Jul 15 | Grass | Moderate |
| Jeffersonville | Lowas of Jul 15 | Grass | Moderate |
| Clarksville | Lowas of Jul 15 | Grass | Moderate |
| Seymour | Lowas of Jul 15 | Grass | Moderate |
| Madison | Lowas of Jul 15 | Grass | Moderate |
| Underwood | Lowas of Jul 15 | Grass | Moderate |
| Crothersville | Lowas of Jul 15 | Grass | Moderate |
| Brownstown | Lowas of Jul 15 | Grass | Moderate |
| Georgetown | Lowas of Jul 15 | Grass | Moderate |
| Ramsey | Lowas of Jul 15 | Grass | Moderate |
| English | Lowas of Jul 15 | Grass | Moderate |
| Bald Knobs | Lowas of Jul 15 | Grass | Moderate |
| New Salisbury | Lowas of Jul 15 | Grass | Moderate |
| Salem | Lowas of Jul 15 | Grass | Moderate |
| Charlestown | Lowas of Jul 15 | Grass | Moderate |
| Fort Wayne | Noneas of Jul 15 | None | Moderate |
| South Bend | Noneas of Jul 15 | None | Moderate |
| Evansville | Noneas of Jul 15 | None | Moderate |
| Elkhart | Noneas of Jul 15 | None | Moderate |
| Muncie | Noneas of Jul 15 | None | Moderate |
| Anderson | Noneas of Jul 15 | None | Moderate |
| Terre Haute | Noneas of Jul 15 | None | Moderate |
| Michigan City | Noneas of Jul 15 | None | Moderate |
| Mishawaka | Noneas of Jul 15 | None | Moderate |
| New Albany | Noneas of Jul 15 | None | Moderate |
| Goshen | Noneas of Jul 15 | None | Moderate |
| Marion | Noneas of Jul 15 | None | Moderate |
| Greenfield | Noneas of Jul 15 | None | Moderate |
| La Porte | Noneas of Jul 15 | None | Moderate |
| Logansport | Noneas of Jul 15 | None | Moderate |
| New Castle | Noneas of Jul 15 | None | Moderate |
| Huntington | Noneas of Jul 15 | None | Moderate |
| Vincennes | Noneas of Jul 15 | None | Moderate |
| Warsaw | Noneas of Jul 15 | None | Moderate |
| Jasper | Noneas of Jul 15 | None | Moderate |
| New Haven | Noneas of Jul 15 | None | Moderate |
| Bedford | Noneas of Jul 15 | None | Moderate |
| Auburn | Noneas of Jul 15 | None | Moderate |
| Washington | Noneas of Jul 15 | None | Moderate |
| Yorktown | Noneas of Jul 15 | None | Moderate |
| Greensburg | Noneas of Jul 15 | None | Moderate |
| Poneto | Noneas of Jul 15 | None | Moderate |
| Elberfeld | Noneas of Jul 15 | None | Moderate |
| Corydon | Noneas of Jul 15 | None | Moderate |
| Alexandria | Noneas of Jul 15 | None | Moderate |
| Notre Dame | Noneas of Jul 15 | None | Moderate |
| Mauckport | Noneas of Jul 15 | None | Moderate |
| Templeton | Noneas of Jul 15 | None | Moderate |
| Chalmers | Noneas of Jul 15 | None | Moderate |
| Fairbanks | Noneas of Jul 15 | None | Moderate |
| Flora | Noneas of Jul 15 | None | Moderate |
| North Manchester | Noneas of Jul 15 | None | Moderate |
| Saint Meinrad | Noneas of Jul 15 | None | Moderate |
| Nappanee | Noneas of Jul 15 | None | Moderate |
| Fremont | Noneas of Jul 15 | None | Moderate |
| Peru | Noneas of Jul 15 | None | Moderate |
| Hanna | Noneas of Jul 15 | None | Moderate |
| Demotte | Noneas of Jul 15 | None | Moderate |
| Rochester | Noneas of Jul 15 | None | Moderate |
| Osceola | Noneas of Jul 15 | None | Moderate |
| Rensselaer | Noneas of Jul 15 | None | Moderate |
| Troy | Noneas of Jul 15 | None | Moderate |
| Floyds Knobs | Noneas of Jul 15 | None | Moderate |
| Fair Oaks | Noneas of Jul 15 | None | Moderate |
| Monticello | Noneas of Jul 15 | None | Moderate |
| Mexico | Noneas of Jul 15 | None | Moderate |
| Brookston | Noneas of Jul 15 | None | Moderate |
| Plymouth | Noneas of Jul 15 | None | Moderate |
| Tell City | Noneas of Jul 15 | None | Moderate |
| Indiana Beach | Noneas of Jul 15 | None | Moderate |
| Ligonier | Noneas of Jul 15 | None | Moderate |
| Churubusco | Noneas of Jul 15 | None | Moderate |
| Syracuse | Noneas of Jul 15 | None | Moderate |
| Lagrange | Noneas of Jul 15 | None | Moderate |
| Howe | Noneas of Jul 15 | None | Moderate |
| Leo | Noneas of Jul 15 | None | Moderate |
| Craigville | Noneas of Jul 15 | None | Moderate |
| Bluffton | Noneas of Jul 15 | None | Moderate |
| Columbia City | Noneas of Jul 15 | None | Moderate |
| Denver | Noneas of Jul 15 | None | Moderate |
| Mentone | Noneas of Jul 15 | None | Moderate |
| Huntingburg | Noneas of Jul 15 | None | Moderate |
| Otwell | Noneas of Jul 15 | None | Moderate |
| Morristown | Noneas of Jul 15 | None | Moderate |
| Fowler | Noneas of Jul 15 | None | Moderate |
| West Baden Springs | Noneas of Jul 15 | None | Moderate |
| Sellersburg | Noneas of Jul 15 | None | Moderate |
| Claypool | Noneas of Jul 15 | None | Moderate |
| Wadesville | Noneas of Jul 15 | None | Moderate |
| Waterloo | Noneas of Jul 15 | None | Moderate |
| Spencerville | Noneas of Jul 15 | None | Moderate |
| Daleville | Noneas of Jul 15 | None | Moderate |
| Albion | Noneas of Jul 15 | None | Moderate |
| Swayzee | Noneas of Jul 15 | None | Moderate |
| Huntertown | Noneas of Jul 15 | None | Moderate |
| Santa Claus | Noneas of Jul 15 | None | Moderate |
| Mount Vernon | Noneas of Jul 15 | None | Moderate |
| Waldron | Noneas of Jul 15 | None | Moderate |
| Lakeville | Noneas of Jul 15 | None | Moderate |
| Angola | Noneas of Jul 15 | None | Moderate |
| Pendleton | Noneas of Jul 15 | None | Moderate |
| Petersburg | Noneas of Jul 15 | None | Moderate |
| Millersburg | Noneas of Jul 15 | None | Moderate |
| New Palestine | Noneas of Jul 15 | None | Moderate |
| Lucerne | Noneas of Jul 15 | None | Moderate |
| Fishers | No live reading | Not available | Moderate |
| Granger | No live reading | Not available | Moderate |
| Shelbyville | No live reading | Not available | Moderate |
| Brazil | No live reading | Not available | Moderate |
| Uniondale | No live reading | Not available | Moderate |
| Camby | No live reading | Not available | Moderate |
| Rockville | No live reading | Not available | Moderate |
| Delphi | No live reading | Not available | Moderate |
| Monrovia | No live reading | Not available | Moderate |
| Middletown | No live reading | Not available | Moderate |
| Decatur | No live reading | Not available | Moderate |
| Oakville | 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 Indiana allergy season
Allergy levels in Indiana 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 Indiana?
Pollen levels in Indiana usually begin climbing in March and reach their highest point in September.
What is the worst month for allergies in Indiana?
September is typically the worst month in Indiana, driven by ragweed pollen.
When does ragweed season end in Indiana?
Ragweed pollen in Indiana usually fades by the end of October, after the first hard frost in colder areas.
When is the best time for allergies in Indiana?
January usually brings the lowest pollen levels of the year in Indiana.