Wisconsin pollen and allergy seasons
July outlookHigh
Wisconsin has a spring tree season, grass in early summer, and a heavy ragweed season in the fall.
Twelve month pollen calendar
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LowModerateHighVery high
Dominant species in July
Grass
Typical peak in July
early-July to late-July
Worst month of the year
September
Best month of the year
January
What is active in July
Grass
Cities in Wisconsin
| City | Today | Worst today | Typical in July |
|---|---|---|---|
| Wauwatosa | Very Highas of Jul 15 | Grass | High |
| Brookfield | Very Highas of Jul 15 | Grass | High |
| Franklin | Very Highas of Jul 15 | Grass | High |
| Mequon | Very Highas of Jul 15 | Grass | High |
| Germantown | Very Highas of Jul 15 | Grass | High |
| Oconomowoc | Very Highas of Jul 15 | Grass | High |
| Hartford | Very Highas of Jul 15 | Grass | High |
| Salem Lakes | Very Highas of Jul 15 | Grass | High |
| Shorewood | Very Highas of Jul 15 | Grass | High |
| Harrison | Very Highas of Jul 15 | Grass | High |
| Glendale | Very Highas of Jul 15 | Grass | High |
| Grafton | Very Highas of Jul 15 | Grass | High |
| Richfield | Very Highas of Jul 15 | Grass | High |
| Sussex | Very Highas of Jul 15 | Grass | High |
| Two Rivers | Very Highas of Jul 15 | Grass | High |
| Saukville | Very Highas of Jul 15 | Grass | High |
| Plymouth | Very Highas of Jul 15 | Grass | High |
| Cascade | Very Highas of Jul 15 | Grass | High |
| Fredonia | Very Highas of Jul 15 | Grass | High |
| Taycheedah | Very Highas of Jul 15 | Grass | High |
| Butler | Very Highas of Jul 15 | Grass | High |
| North Prairie | Very Highas of Jul 15 | Grass | High |
| Wales | Very Highas of Jul 15 | Grass | High |
| Trevor | Very Highas of Jul 15 | Grass | High |
| Big Bend | Very Highas of Jul 15 | Grass | High |
| Sheboygan Falls | Very Highas of Jul 15 | Grass | High |
| Sherwood | Very Highas of Jul 15 | Grass | High |
| Oostburg | Very Highas of Jul 15 | Grass | High |
| Waukesha | Highas of Jul 15 | Grass | High |
| Manitowoc | Highas of Jul 15 | Grass | High |
| West Bend | Highas of Jul 15 | Grass | High |
| River Falls | Highas of Jul 15 | Grass | High |
| Hudson | Highas of Jul 15 | Grass | High |
| Oshkosh | Moderateas of Jul 15 | Grass | High |
| Sheboygan | Moderateas of Jul 15 | Grass | High |
| West Allis | Moderateas of Jul 15 | Grass | High |
| New Berlin | Moderateas of Jul 15 | Grass | High |
| Menomonee Falls | Moderateas of Jul 15 | Grass | High |
| Greenfield | Moderateas of Jul 15 | Grass | High |
| Oak Creek | Moderateas of Jul 15 | Grass | High |
| Muskego | Moderateas of Jul 15 | Grass | High |
| South Milwaukee | Moderateas of Jul 15 | Grass | High |
| Cudahy | Moderateas of Jul 15 | Grass | High |
| Whitefish Bay | Moderateas of Jul 15 | Grass | High |
| Greendale | Moderateas of Jul 15 | Grass | High |
| Brown Deer | Moderateas of Jul 15 | Grass | High |
| Port Washington | Moderateas of Jul 15 | Grass | High |
| Cedarburg | Moderateas of Jul 15 | Grass | High |
| Allenton | Moderateas of Jul 15 | Grass | High |
| Vernon | Moderateas of Jul 15 | Grass | High |
| Delafield | Moderateas of Jul 15 | Grass | High |
| Hartland | Moderateas of Jul 15 | Grass | High |
| Pewaukee | Moderateas of Jul 15 | Grass | High |
| East Troy | Moderateas of Jul 15 | Grass | High |
| Madison | Noneas of Jul 15 | None | High |
| Appleton | Noneas of Jul 15 | None | High |
| Green Bay | Noneas of Jul 15 | None | High |
| Racine | Noneas of Jul 15 | None | High |
| Kenosha | Noneas of Jul 15 | None | High |
| Eau Claire | Noneas of Jul 15 | None | High |
| La Crosse | Noneas of Jul 15 | None | High |
| Wausau | Noneas of Jul 15 | None | High |
| Janesville | Noneas of Jul 15 | None | High |
| Fond Du Lac | Noneas of Jul 15 | None | High |
| Beloit | Noneas of Jul 15 | None | High |
| Sun Prairie | Noneas of Jul 15 | None | High |
| Fitchburg | Noneas of Jul 15 | None | High |
| Mount Pleasant | Noneas of Jul 15 | None | High |
| Neenah | Noneas of Jul 15 | None | High |
| Superior | Noneas of Jul 15 | None | High |
| Stevens Point | Noneas of Jul 15 | None | High |
| De Pere | Noneas of Jul 15 | None | High |
| Caledonia | Noneas of Jul 15 | None | High |
| Watertown | Noneas of Jul 15 | None | High |
| Middleton | Noneas of Jul 15 | None | High |
| Pleasant Prairie | Noneas of Jul 15 | None | High |
| Howard | Noneas of Jul 15 | None | High |
| Fox Crossing | Noneas of Jul 15 | None | High |
| Onalaska | Noneas of Jul 15 | None | High |
| Wisconsin Rapids | Noneas of Jul 15 | None | High |
| Marshfield | Noneas of Jul 15 | None | High |
| Menasha | Noneas of Jul 15 | None | High |
| Kaukauna | Noneas of Jul 15 | None | High |
| Ashwaubenon | Noneas of Jul 15 | None | High |
| Beaver Dam | Noneas of Jul 15 | None | High |
| Menomonie | Noneas of Jul 15 | None | High |
| Bellevue | Noneas of Jul 15 | None | High |
| Weston | Noneas of Jul 15 | None | High |
| Whitewater | Noneas of Jul 15 | None | High |
| Chippewa Falls | Noneas of Jul 15 | None | High |
| Verona | Noneas of Jul 15 | None | High |
| Plover | Noneas of Jul 15 | None | High |
| Stoughton | Noneas of Jul 15 | None | High |
| Suamico | Noneas of Jul 15 | None | High |
| Greenville | Noneas of Jul 15 | None | High |
| Baraboo | Noneas of Jul 15 | None | High |
| Fort Atkinson | Noneas of Jul 15 | None | High |
| Little Chute | Noneas of Jul 15 | None | High |
| Platteville | Noneas of Jul 15 | None | High |
| Oregon | Noneas of Jul 15 | None | High |
| Waupun | Noneas of Jul 15 | None | High |
| Union Grove | Noneas of Jul 15 | None | High |
| New Glarus | Noneas of Jul 15 | None | High |
| Wisconsin Dells | Noneas of Jul 15 | None | High |
| Bloomer | Noneas of Jul 15 | None | High |
| Balsam Lake | Noneas of Jul 15 | None | High |
| Black River Falls | Noneas of Jul 15 | None | High |
| Eagle River | Noneas of Jul 15 | None | High |
| Pine River | Noneas of Jul 15 | None | High |
| Deerbrook | Noneas of Jul 15 | None | High |
| Adams | Noneas of Jul 15 | None | High |
| Iron Ridge | Noneas of Jul 15 | None | High |
| Luck | Noneas of Jul 15 | None | High |
| Westby | Noneas of Jul 15 | None | High |
| Rhinelander | Noneas of Jul 15 | None | High |
| Fairchild | Noneas of Jul 15 | None | High |
| Mather | Noneas of Jul 15 | None | High |
| Camp Douglas | Noneas of Jul 15 | None | High |
| Altoona | Noneas of Jul 15 | None | High |
| Lake Geneva | Noneas of Jul 15 | None | High |
| Hustler | Noneas of Jul 15 | None | High |
| Sparta | Noneas of Jul 15 | None | High |
| Tomahawk | Noneas of Jul 15 | None | High |
| Auburndale | Noneas of Jul 15 | None | High |
| Prairie Du Sac | Noneas of Jul 15 | None | High |
| Eland | Noneas of Jul 15 | None | High |
| Montello | Noneas of Jul 15 | None | High |
| Milton | Noneas of Jul 15 | None | High |
| Waterloo | Noneas of Jul 15 | None | High |
| Monona | Noneas of Jul 15 | None | High |
| Rice Lake | Noneas of Jul 15 | None | High |
| Bruce | Noneas of Jul 15 | None | High |
| Poynette | Noneas of Jul 15 | None | High |
| Hager City | Noneas of Jul 15 | None | High |
| Juneau | Noneas of Jul 15 | None | High |
| White Lake | Noneas of Jul 15 | None | High |
| Nekoosa | Noneas of Jul 15 | None | High |
| Cumberland | Noneas of Jul 15 | None | High |
| Milltown | Noneas of Jul 15 | None | High |
| Mazomanie | Noneas of Jul 15 | None | High |
| Mount Horeb | Noneas of Jul 15 | None | High |
| Princeton | Noneas of Jul 15 | None | High |
| Amery | Noneas of Jul 15 | None | High |
| New Richmond | Noneas of Jul 15 | None | High |
| Mosinee | Noneas of Jul 15 | None | High |
| Muscoda | Noneas of Jul 15 | None | High |
| Phillips | Noneas of Jul 15 | None | High |
| Marinette | Noneas of Jul 15 | None | High |
| Argyle | Noneas of Jul 15 | None | High |
| Prairie Du Chien | Noneas of Jul 15 | None | High |
| Bay City | Noneas of Jul 15 | None | High |
| Baldwin | Noneas of Jul 15 | None | High |
| Danbury | Noneas of Jul 15 | None | High |
| Monroe | Noneas of Jul 15 | None | High |
| Plainfield | Noneas of Jul 15 | None | High |
| Clinton | Noneas of Jul 15 | None | High |
| Ashland | Noneas of Jul 15 | None | High |
| West Salem | Noneas of Jul 15 | None | High |
| Merrill | Noneas of Jul 15 | None | High |
| De Forest | Noneas of Jul 15 | None | High |
| Minocqua | Noneas of Jul 15 | None | High |
| Tomah | Noneas of Jul 15 | None | High |
| Fish Creek | Noneas of Jul 15 | None | High |
| Lowell | Noneas of Jul 15 | None | High |
| Ellsworth | Noneas of Jul 15 | None | High |
| Luxemburg | Noneas of Jul 15 | None | High |
| Sturgeon Bay | Noneas of Jul 15 | None | High |
| Durand | Noneas of Jul 15 | None | High |
| Gilmanton | Noneas of Jul 15 | None | High |
| Horicon | Noneas of Jul 15 | None | High |
| Winchester | Noneas of Jul 15 | None | High |
| La Valle | Noneas of Jul 15 | None | High |
| Burlington | Noneas of Jul 15 | None | High |
| Boscobel | Noneas of Jul 15 | None | High |
| Long Lake | Noneas of Jul 15 | None | High |
| Cottage Grove | Noneas of Jul 15 | None | High |
| Amherst | Noneas of Jul 15 | None | High |
| Blair | Noneas of Jul 15 | None | High |
| Medford | Noneas of Jul 15 | None | High |
| Lyndon Station | Noneas of Jul 15 | None | High |
| Osseo | Noneas of Jul 15 | None | High |
| Grand Marsh | Noneas of Jul 15 | None | High |
| Omro | Noneas of Jul 15 | None | High |
| Fall River | Noneas of Jul 15 | None | High |
| Lake Mills | Noneas of Jul 15 | None | High |
| Johnson Creek | Noneas of Jul 15 | None | High |
| Milwaukee | No live reading | Not available | High |
| Waunakee | No live reading | Not available | High |
| Allouez | No live reading | Not available | High |
| Ripon | No live reading | Not available | High |
| Viroqua | No live reading | Not available | High |
| Wild Rose | No live reading | Not available | High |
Today and worst today come from live readings where available. Typical shows the usual level for this month from the seasonal profile.
The Wisconsin allergy season
Allergy levels in Wisconsin 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 April. The lowest pollen levels of the year arrive in January.
Common questions
When does allergy season start in Wisconsin?
Pollen levels in Wisconsin usually begin climbing in April and reach their highest point in September.
What is the worst month for allergies in Wisconsin?
September is typically the worst month in Wisconsin, driven by ragweed pollen.
When does ragweed season end in Wisconsin?
Ragweed pollen in Wisconsin usually fades by the end of October, after the first hard frost in colder areas.
When is the best time for allergies in Wisconsin?
January usually brings the lowest pollen levels of the year in Wisconsin.