Arizona pollen and allergy seasons
August outlookModerate
Arizona spreads its allergy season across most of the year, with desert trees in late winter and spring and weeds returning after the summer monsoon.
Twelve month pollen calendar
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LowModerateHighVery high
Dominant species in August
Sagebrush
Typical peak in August
No clear peak this month
Worst month of the year
April
Best month of the year
June
What is active in August
Sagebrushnot tracked live
Russian thistlenot tracked live
Grass
Cities in Arizona
| City | Today | Worst today | Typical in August |
|---|---|---|---|
| Flagstaff | Very Highas of Aug 8 | Grass | Moderate |
| Prescott | Very Highas of Aug 8 | Grass | Moderate |
| Sierra Vista | Very Highas of Aug 8 | Grass | Moderate |
| Fortuna Foothills | Very Highas of Aug 8 | Grass | Moderate |
| Rio Rico | Very Highas of Aug 8 | Grass | Moderate |
| Nogales | Very Highas of Aug 8 | Grass | Moderate |
| Flowing Wells | Very Highas of Aug 8 | Mugwort | Moderate |
| Fort Mohave | Very Highas of Aug 8 | Grass | Moderate |
| Tanque Verde | Very Highas of Aug 8 | Grass | Moderate |
| Somerton | Very Highas of Aug 8 | Grass | Moderate |
| Sierra Vista Southeast | Very Highas of Aug 8 | Grass | Moderate |
| Valencia West | Very Highas of Aug 8 | Grass | Moderate |
| Chino Valley | Very Highas of Aug 8 | Grass | Moderate |
| Saddlebrooke | Very Highas of Aug 8 | Grass | Moderate |
| Cottonwood | Very Highas of Aug 8 | Grass | Moderate |
| Camp Verde | Very Highas of Aug 8 | Mugwort | Moderate |
| Oak Creek | Very Highas of Aug 8 | Grass | Moderate |
| Catalina | Very Highas of Aug 8 | Grass | Moderate |
| Cornville | Very Highas of Aug 8 | Grass | Moderate |
| Pine | Very Highas of Aug 8 | Grass | Moderate |
| Sedona | Very Highas of Aug 8 | Mugwort | Moderate |
| Vernon | Very Highas of Aug 8 | Grass | Moderate |
| Indian Wells | Very Highas of Aug 8 | Grass | Moderate |
| Holbrook | Very Highas of Aug 8 | Grass | Moderate |
| Golden Valley | Very Highas of Aug 8 | Grass | Moderate |
| Phoenix | Highas of Aug 8 | Mugwort | Moderate |
| Mesa | Highas of Aug 8 | Mugwort | Moderate |
| Chandler | Highas of Aug 8 | Mugwort | Moderate |
| Scottsdale | Highas of Aug 8 | Mugwort | Moderate |
| Peoria | Highas of Aug 8 | Mugwort | Moderate |
| Surprise | Highas of Aug 8 | Mugwort | Moderate |
| Yuma | Highas of Aug 8 | Grass | Moderate |
| San Tan Valley | Highas of Aug 8 | Mugwort | Moderate |
| Goodyear | Highas of Aug 8 | Mugwort | Moderate |
| Buckeye | Highas of Aug 8 | Mugwort | Moderate |
| Avondale | Highas of Aug 8 | Mugwort | Moderate |
| Queen Creek | Highas of Aug 8 | Mugwort | Moderate |
| Casa Grande | Highas of Aug 8 | Mugwort | Moderate |
| Oro Valley | Highas of Aug 8 | Grass | Moderate |
| Sun City | Highas of Aug 8 | Mugwort | Moderate |
| Fountain Hills | Highas of Aug 8 | Mugwort | Moderate |
| Anthem | Highas of Aug 8 | Mugwort | Moderate |
| New River | Highas of Aug 8 | Mugwort | Moderate |
| Douglas | Highas of Aug 8 | Grass | Moderate |
| Verde Village | Highas of Aug 8 | Grass | Moderate |
| Guadalupe | Highas of Aug 8 | Mugwort | Moderate |
| Cave Creek | Highas of Aug 8 | Mugwort | Moderate |
| Carefree | Highas of Aug 8 | Mugwort | Moderate |
| Tucson | Moderateas of Aug 8 | Grass | Moderate |
| Gilbert | Moderateas of Aug 8 | Mugwort | Moderate |
| Glendale | Moderateas of Aug 8 | Mugwort | Moderate |
| Tempe | Moderateas of Aug 8 | Mugwort | Moderate |
| Prescott Valley | Moderateas of Aug 8 | Grass | Moderate |
| Lake Havasu City | Moderateas of Aug 8 | Grass | Moderate |
| Marana | Moderateas of Aug 8 | Grass | Moderate |
| Catalina Foothills | Moderateas of Aug 8 | Grass | Moderate |
| Bullhead City | Moderateas of Aug 8 | Grass | Moderate |
| Apache Junction | Moderateas of Aug 8 | Mugwort | Moderate |
| Drexel Heights | Moderateas of Aug 8 | Grass | Moderate |
| Sun City West | Moderateas of Aug 8 | Mugwort | Moderate |
| Eloy | Moderateas of Aug 8 | Mugwort | Moderate |
| Payson | Moderateas of Aug 8 | Grass | Moderate |
| Coolidge | Moderateas of Aug 8 | Mugwort | Moderate |
| Sun Lakes | Moderateas of Aug 8 | Mugwort | Moderate |
| Tucson Mountains | Moderateas of Aug 8 | Grass | Moderate |
| Lakeside | Moderateas of Aug 8 | Grass | Moderate |
| Deer Valley | Moderateas of Aug 8 | Mugwort | Moderate |
| Alhambra | Moderateas of Aug 8 | Mugwort | Moderate |
| Fort Defiance | Moderateas of Aug 8 | Grass | Moderate |
| Litchfield Park | Moderateas of Aug 8 | Mugwort | Moderate |
| Arizona City | Moderateas of Aug 8 | Mugwort | Moderate |
| Sells | Moderateas of Aug 8 | Grass | Moderate |
| Globe | Moderateas of Aug 8 | Grass | Moderate |
| Dewey | Moderateas of Aug 8 | Grass | Moderate |
| Happy Jack | Moderateas of Aug 8 | Grass | Moderate |
| Sahuarita | Lowas of Aug 8 | Grass | Moderate |
| Vail | Lowas of Aug 8 | Grass | Moderate |
| Casas Adobes | No live reading | Not available | Moderate |
| Maricopa | No live reading | Not available | Moderate |
| San Luis | No live reading | Not available | Moderate |
| El Mirage | No live reading | Not available | Moderate |
| Kingman | No live reading | Not available | Moderate |
| Florence | No live reading | Not available | Moderate |
| Green Valley | No live reading | Not available | Moderate |
| New Kingman-Butler | No live reading | Not available | Moderate |
| Tucson Estates | No live reading | Not available | Moderate |
| Paradise Valley | No live reading | Not available | Moderate |
| Gold Canyon | No live reading | Not available | Moderate |
| Show Low | No live reading | Not available | Moderate |
| Benson | No live reading | Not available | Moderate |
| Wilhoit | No live reading | Not available | Moderate |
| Jerome | No live reading | Not available | Moderate |
| Oracle | No live reading | Not available | Moderate |
| Strawberry | No live reading | Not available | Moderate |
| Wickenburg | No live reading | Not available | Moderate |
| Quartzsite | No live reading | Not available | Moderate |
| Bisbee | No live reading | Not available | Moderate |
| Citrus Park | No live reading | Not available | Moderate |
| Windsor Mobile Home Park | No live reading | Not available | Moderate |
| Duncan | No live reading | Not available | Moderate |
| Corona De Tucson | No live reading | Not available | Moderate |
| Rio Verde | No live reading | Not available | Moderate |
| Williams | 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 Arizona for ozone, dust, and smoke readings by city.
The Arizona allergy season
Allergy levels in Arizona peak in April, when olive pollen runs highest. The season moves through tree pollen around April, grass in April, weed pollen such as ragweed in September. Levels start to climb around January. The lowest pollen levels of the year arrive in June.
Common questions
When does allergy season start in Arizona?
Pollen levels in Arizona usually begin climbing in January and reach their highest point in April.
What is the worst month for allergies in Arizona?
April is typically the worst month in Arizona, driven by olive pollen.
When does ragweed season end in Arizona?
Ragweed pollen in Arizona usually fades by the end of October, after the first hard frost in colder areas.
When is the best time for allergies in Arizona?
June usually brings the lowest pollen levels of the year in Arizona.