Massachusetts pollen and allergy seasons
October outlookModerate
Massachusetts has a spring tree season and a strong ragweed season in late summer and early fall.
Twelve month pollen calendar
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LowModerateHighVery high
Dominant species in October
Ragweed
Typical peak in October
No clear peak this month
Worst month of the year
September
Best month of the year
January
What is active in October
Ragweed
Cities in Massachusetts
| City | Today | Worst today | Typical in October |
|---|---|---|---|
| Manomet | Moderateas of Oct 16 | Ragweed | Moderate |
| Raynham | Moderateas of Oct 16 | Ragweed | Moderate |
| Westport Factory | Moderateas of Oct 16 | Ragweed | Moderate |
| Marion | Moderateas of Oct 16 | Ragweed | Moderate |
| Lowell | Lowas of Oct 16 | Ragweed | Moderate |
| Everett | Lowas of Oct 16 | Ragweed | Moderate |
| Pepperell | Lowas of Oct 16 | Ragweed | Moderate |
| Bridgewater | Lowas of Oct 16 | Ragweed | Moderate |
| Maynard | Lowas of Oct 16 | Ragweed | Moderate |
| Watertown | Lowas of Oct 16 | Ragweed | Moderate |
| Lexington | Lowas of Oct 16 | Ragweed | Moderate |
| Stoneham | Lowas of Oct 16 | Ragweed | Moderate |
| Wayland | Lowas of Oct 16 | Ragweed | Moderate |
| Burlington | Lowas of Oct 16 | Ragweed | Moderate |
| Brookline Village | Lowas of Oct 16 | Ragweed | Moderate |
| Marshfield | Lowas of Oct 16 | Ragweed | Moderate |
| Feeding Hills | Noneas of Oct 16 | None | Moderate |
| South Harwich | Noneas of Oct 16 | None | Moderate |
| Greenfield | Noneas of Oct 16 | None | Moderate |
| Southwick | Noneas of Oct 16 | None | Moderate |
| Marstons Mills | Noneas of Oct 16 | None | Moderate |
| Barnstable | Noneas of Oct 16 | None | Moderate |
| Housatonic | Noneas of Oct 16 | None | Moderate |
| Boston | No live reading | Not available | Moderate |
| Worcester | No live reading | Not available | Moderate |
| Springfield | No live reading | Not available | Moderate |
| New Bedford | No live reading | Not available | Moderate |
| Cambridge | No live reading | Not available | Moderate |
| Leominster | No live reading | Not available | Moderate |
| Brockton | No live reading | Not available | Moderate |
| Quincy | No live reading | Not available | Moderate |
| Lynn | No live reading | Not available | Moderate |
| Fall River | No live reading | Not available | Moderate |
| Newton | No live reading | Not available | Moderate |
| Lawrence | No live reading | Not available | Moderate |
| Somerville | No live reading | Not available | Moderate |
| Framingham | No live reading | Not available | Moderate |
| Haverhill | No live reading | Not available | Moderate |
| Malden | No live reading | Not available | Moderate |
| Waltham | No live reading | Not available | Moderate |
| Revere | No live reading | Not available | Moderate |
| Taunton | No live reading | Not available | Moderate |
| Medford | No live reading | Not available | Moderate |
| Chicopee | No live reading | Not available | Moderate |
| Peabody | No live reading | Not available | Moderate |
| Methuen Town | No live reading | Not available | Moderate |
| Attleboro | No live reading | Not available | Moderate |
| Salem | No live reading | Not available | Moderate |
| Pittsfield | No live reading | Not available | Moderate |
| Beverly | No live reading | Not available | Moderate |
| Fitchburg | No live reading | Not available | Moderate |
| Marlborough | No live reading | Not available | Moderate |
| Woburn | No live reading | Not available | Moderate |
| Westfield | No live reading | Not available | Moderate |
| Chelsea | No live reading | Not available | Moderate |
| Holyoke | No live reading | Not available | Moderate |
| Watertown Town | No live reading | Not available | Moderate |
| Gloucester | No live reading | Not available | Moderate |
| Melrose | No live reading | Not available | Moderate |
| Northampton | No live reading | Not available | Moderate |
| Gardner | No live reading | Not available | Moderate |
| Newburyport | No live reading | Not available | Moderate |
| North Adams | No live reading | Not available | Moderate |
| South Yarmouth | No live reading | Not available | Moderate |
| Monterey | No live reading | Not available | Moderate |
| Holden | No live reading | Not available | Moderate |
| Milford | No live reading | Not available | Moderate |
| Dudley | No live reading | Not available | Moderate |
| Shirley | No live reading | Not available | Moderate |
| Waban | No live reading | Not available | Moderate |
| West Newbury | No live reading | Not available | Moderate |
| Charlemont | No live reading | Not available | Moderate |
| Rockland | No live reading | Not available | Moderate |
| Westwood | No live reading | Not available | Moderate |
| Seekonk | No live reading | Not available | Moderate |
| Attleborough City | No live reading | Not available | Moderate |
| Rockport | No live reading | Not available | Moderate |
| Colrain | No live reading | Not available | Moderate |
| Whately | No live reading | Not available | Moderate |
| Somerset | No live reading | Not available | Moderate |
| Templeton | No live reading | Not available | Moderate |
| Huntington | No live reading | Not available | Moderate |
| Easton | No live reading | Not available | Moderate |
| Ayer | No live reading | Not available | Moderate |
| Kingston | No live reading | Not available | Moderate |
| Onset | No live reading | Not available | Moderate |
| North Grafton | No live reading | Not available | Moderate |
| Byfield | No live reading | Not available | Moderate |
| Palmer | No live reading | Not available | Moderate |
| Framingham Center | No live reading | Not available | Moderate |
| Manchester | No live reading | Not available | Moderate |
| Sherborn | No live reading | Not available | Moderate |
| Norfolk | No live reading | Not available | Moderate |
| Weston | No live reading | Not available | Moderate |
| Westminster | No live reading | Not available | Moderate |
| Shutesbury | No live reading | Not available | Moderate |
| Pembroke | No live reading | Not available | Moderate |
| Carver | No live reading | Not available | Moderate |
| Hanover | No live reading | Not available | Moderate |
| East Dennis | No live reading | Not available | Moderate |
| Goshen | No live reading | Not available | Moderate |
| Rochester | No live reading | Not available | Moderate |
| Ashfield | No live reading | Not available | Moderate |
| Boylston | No live reading | Not available | Moderate |
| Indian Orchard | No live reading | Not available | Moderate |
| Acapesket | No live reading | Not available | Moderate |
| Brookfield | No live reading | Not available | Moderate |
| White Horse Beach | No live reading | Not available | Moderate |
| Halifax | No live reading | Not available | Moderate |
| East Falmouth | No live reading | Not available | Moderate |
| Williamstown | No live reading | Not available | Moderate |
| Winthrop | No live reading | Not available | Moderate |
| Barre | No live reading | Not available | Moderate |
| Needham | No live reading | Not available | Moderate |
| Wellfleet | No live reading | Not available | Moderate |
| Plainville | No live reading | Not available | Moderate |
| Whitinsville | No live reading | Not available | Moderate |
| Natick | No live reading | Not available | Moderate |
| Upton | No live reading | Not available | Moderate |
| Newbury | No live reading | Not available | Moderate |
| Danvers | No live reading | Not available | Moderate |
| Buzzards Bay | No live reading | Not available | Moderate |
| Wendell | No live reading | Not available | Moderate |
| Townsend | No live reading | Not available | Moderate |
| Essex | No live reading | Not available | Moderate |
| Methuen | No live reading | Not available | Moderate |
| Haydenville | No live reading | Not available | Moderate |
| West Brookfield | No live reading | Not available | Moderate |
| Chelmsford | No live reading | Not available | Moderate |
| Webster | No live reading | Not available | Moderate |
| Waverley | No live reading | Not available | Moderate |
| Wilmington | No live reading | Not available | Moderate |
| Douglas | No live reading | Not available | Moderate |
| Norton | No live reading | Not available | Moderate |
| Dracut | No live reading | Not available | Moderate |
| East Longmeadow | No live reading | Not available | Moderate |
| Ashland | No live reading | Not available | Moderate |
| Great Barrington | No live reading | Not available | Moderate |
| Northborough | No live reading | Not available | Moderate |
| Vineyard Haven | No live reading | Not available | Moderate |
| Harwich | No live reading | Not available | Moderate |
| Winchester | No live reading | Not available | Moderate |
| Oxford | No live reading | Not available | Moderate |
| Wakefield | No live reading | Not available | Moderate |
| Roxbury | No live reading | Not available | Moderate |
| Randolph | No live reading | Not available | Moderate |
| Westport | No live reading | Not available | Moderate |
| Yarmouth | No live reading | Not available | Moderate |
| Northbridge | No live reading | Not available | Moderate |
| Erving | No live reading | Not available | Moderate |
| Andover | No live reading | Not available | Moderate |
| Millbury | No live reading | Not available | Moderate |
| Wellesley Hills | No live reading | Not available | Moderate |
| Royalston | No live reading | Not available | Moderate |
| Grafton | No live reading | Not available | Moderate |
| Weymouth | No live reading | Not available | Moderate |
| Ludlow | No live reading | Not available | Moderate |
| Three Rivers | No live reading | Not available | Moderate |
| Reading | No live reading | Not available | Moderate |
| North Amherst | No live reading | Not available | Moderate |
| Milton | No live reading | Not available | Moderate |
| Agawam | No live reading | Not available | Moderate |
| Topsfield | No live reading | Not available | Moderate |
| South Weymouth | No live reading | Not available | Moderate |
| Rowley | No live reading | Not available | Moderate |
| Georgetown | No live reading | Not available | Moderate |
| Paxton | No live reading | Not available | Moderate |
| Longmeadow | No live reading | Not available | Moderate |
| North Attleboro | No live reading | Not available | Moderate |
| Duxbury | No live reading | Not available | Moderate |
| Roslindale | No live reading | Not available | Moderate |
| Granville | No live reading | Not available | Moderate |
| Dover | No live reading | Not available | Moderate |
| Plymouth | No live reading | Not available | Moderate |
| Concord | No live reading | Not available | Moderate |
| Wellesley | No live reading | Not available | Moderate |
| Wilbraham | No live reading | Not available | Moderate |
| Swampscott | No live reading | Not available | Moderate |
| South Easton | No live reading | Not available | Moderate |
| Groton | No live reading | Not available | Moderate |
| Sutton | No live reading | Not available | Moderate |
| Boxborough | No live reading | Not available | Moderate |
| North Andover | No live reading | Not available | Moderate |
| East Bridgewater | No live reading | Not available | Moderate |
| Sterling | No live reading | Not available | Moderate |
| Acushnet | No live reading | Not available | Moderate |
| Hopkinton | No live reading | Not available | Moderate |
| Amesbury | No live reading | Not available | Moderate |
| Yarmouth Port | No live reading | Not available | Moderate |
| Franklin | No live reading | Not available | Moderate |
| Hanson | No live reading | Not available | Moderate |
| Leeds | No live reading | Not available | Moderate |
| East Walpole | No live reading | Not available | Moderate |
| Billerica | No live reading | Not available | Moderate |
| Brookline | No live reading | Not available | Moderate |
| Marblehead | No live reading | Not available | Moderate |
| Charlton | No live reading | Not available | Moderate |
| Saugus | No live reading | Not available | Moderate |
| Uxbridge | No live reading | Not available | Moderate |
| Walpole | No live reading | Not available | Moderate |
| Amherst | No live reading | Not available | Moderate |
| Lynnfield | No live reading | Not available | Moderate |
| Fairhaven | No live reading | Not available | Moderate |
| Tyngsboro | No live reading | Not available | Moderate |
| Ashby | No live reading | Not available | Moderate |
| Newton Center | No live reading | Not available | Moderate |
| Gilbertville | No live reading | Not available | Moderate |
| Acton | No live reading | Not available | Moderate |
| Westborough | No live reading | Not available | Moderate |
| Braintree | No live reading | Not available | Moderate |
| Dennis | No live reading | Not available | Moderate |
| Hyannis | No live reading | Not available | Moderate |
| Mendon | No live reading | Not available | Moderate |
| Bedford | No live reading | Not available | Moderate |
| Dedham | No live reading | Not available | Moderate |
| Westford | No live reading | Not available | Moderate |
| Brighton | No live reading | Not available | Moderate |
| Sharon | No live reading | Not available | Moderate |
| Athol | No live reading | Not available | Moderate |
| Holliston | No live reading | Not available | Moderate |
| North Billerica | No live reading | Not available | Moderate |
| West Springfield | No live reading | Not available | Moderate |
| Brewster | No live reading | Not available | Moderate |
| Stoughton | No live reading | Not available | Moderate |
| Shrewsbury | No live reading | Not available | Moderate |
| South Dennis | No live reading | Not available | Moderate |
| East Wareham | No live reading | Not available | Moderate |
| Belmont | No live reading | Not available | Moderate |
| Wrentham | No live reading | Not available | Moderate |
| Cohasset | No live reading | Not available | Moderate |
| Mansfield | No live reading | Not available | Moderate |
| Bourne | No live reading | Not available | Moderate |
| Littleton | No live reading | Not available | Moderate |
| Adams | No live reading | Not available | Moderate |
| Falmouth | No live reading | Not available | Moderate |
| Woods Hole | No live reading | Not available | Moderate |
| Sandisfield | No live reading | Not available | Moderate |
| West Roxbury | No live reading | Not available | Moderate |
| Mattapoisett | No live reading | Not available | Moderate |
| Sheldonville | No live reading | Not available | Moderate |
| Harvard | No live reading | Not available | Moderate |
| Medway | No live reading | Not available | Moderate |
| Tewksbury | No live reading | Not available | Moderate |
| Canton | No live reading | Not available | Moderate |
| Hudson | No live reading | Not available | Moderate |
| Swansea | No live reading | Not available | Moderate |
| Sudbury | No live reading | Not available | Moderate |
| Southampton | No live reading | Not available | Moderate |
| East Sandwich | No live reading | Not available | Moderate |
| Bernardston | No live reading | Not available | Moderate |
| Lakeville | No live reading | Not available | Moderate |
| North Reading | No live reading | Not available | Moderate |
| East Weymouth | No live reading | Not available | Moderate |
| Middleboro | No live reading | Not available | Moderate |
| Baldwinville | No live reading | Not available | Moderate |
| Stockbridge | No live reading | Not available | Moderate |
| Ware | No live reading | Not available | Moderate |
| Ipswich | No live reading | Not available | Moderate |
| Medfield | No live reading | Not available | Moderate |
| Norwood | No live reading | Not available | Moderate |
| Amherst Center | No live reading | Not available | Moderate |
| Warwick | No live reading | Not available | Moderate |
| Downtown Crossing | No live reading | Not available | Moderate |
| New Marlborough | No live reading | Not available | Moderate |
| Newtonville | No live reading | Not available | Moderate |
| East Freetown | No live reading | Not available | Moderate |
| Lanesboro | No live reading | Not available | Moderate |
| Jamaica Plain | No live reading | Not available | Moderate |
| Assonet | No live reading | Not available | Moderate |
| South Chatham | No live reading | Not available | Moderate |
| Arlington | No live reading | Not available | Moderate |
| Rehoboth | No live reading | Not available | Moderate |
| Dorchester Center | No live reading | Not available | Moderate |
| Florence | No live reading | Not available | Moderate |
| Foxboro | No live reading | Not available | Moderate |
| Rutland | No live reading | Not available | Moderate |
| Easthampton | No live reading | Not available | Moderate |
| Edgartown | No live reading | Not available | Moderate |
| Russells Mills | No live reading | Not available | Moderate |
| Hadley | No live reading | Not available | Moderate |
| Wareham | No live reading | Not available | Moderate |
| Williamsburg | No live reading | Not available | Moderate |
| Lenox | No live reading | Not available | Moderate |
| South Deerfield | No live reading | Not available | Moderate |
| Southbridge | No live reading | Not available | Moderate |
| Mashpee | No live reading | Not available | Moderate |
| South Boston | No live reading | Not available | Moderate |
| Scituate | No live reading | Not available | Moderate |
| Allston | No live reading | Not available | Moderate |
| Hull | No live reading | Not available | Moderate |
| Hinsdale | No live reading | Not available | Moderate |
| Cambridgeport | No live reading | Not available | Moderate |
| Charlestown | No live reading | Not available | Moderate |
| Leverett | No live reading | Not available | Moderate |
| Belchertown | No live reading | Not available | Moderate |
| Chestnut Hill | No live reading | Not available | Moderate |
| Indian Lake Estates | No live reading | Not available | Moderate |
| Foxborough | No live reading | Not available | Moderate |
| Bellingham | No live reading | Not available | Moderate |
| Princeton | No live reading | Not available | Moderate |
| South Hamilton | No live reading | Not available | Moderate |
| Abington | No live reading | Not available | Moderate |
| Back Bay | No live reading | Not available | Moderate |
| North Dartmouth | No live reading | Not available | Moderate |
| West Newton | 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.
Pollen is only half of what's in the air. See today's air quality in Massachusetts for ozone, dust, and smoke readings by city.
The Massachusetts allergy season
Allergy levels in Massachusetts 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 Massachusetts?
Pollen levels in Massachusetts usually begin climbing in March and reach their highest point in September.
What is the worst month for allergies in Massachusetts?
September is typically the worst month in Massachusetts, driven by ragweed pollen.
When does ragweed season end in Massachusetts?
Ragweed pollen in Massachusetts usually fades by the end of October, after the first hard frost in colder areas.
When is the best time for allergies in Massachusetts?
January usually brings the lowest pollen levels of the year in Massachusetts.