Arizona pollen and allergy seasons
October 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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F
M
A
M
J
J
A
S
O
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N
D
LowModerateHighVery high
Dominant species in October
Sagebrush
Typical peak in October
No clear peak this month
Worst month of the year
April
Best month of the year
June
What is active in October
Sagebrushnot tracked live
Grass
Ragweed
Cities in Arizona
| City | Today | Worst today | Typical in October |
|---|---|---|---|
| Sun City West | Highas of Oct 16 | Ragweed | Moderate |
| Guadalupe | Highas of Oct 16 | Ragweed | Moderate |
| Wickenburg | Highas of Oct 16 | Ragweed | Moderate |
| Citrus Park | Highas of Oct 16 | Ragweed | Moderate |
| Mesa | Moderateas of Oct 16 | Ragweed | Moderate |
| Maricopa | Moderateas of Oct 16 | Ragweed | Moderate |
| Queen Creek | Moderateas of Oct 16 | Ragweed | Moderate |
| Eloy | Moderateas of Oct 16 | Ragweed | Moderate |
| Coolidge | Moderateas of Oct 16 | Ragweed | Moderate |
| Sun Lakes | Moderateas of Oct 16 | Ragweed | Moderate |
| Strawberry | Lowas of Oct 16 | Grass | Moderate |
| Fort Defiance | Lowas of Oct 16 | Grass | Moderate |
| Pine | Lowas of Oct 16 | Grass | Moderate |
| Happy Jack | Lowas of Oct 16 | Grass | Moderate |
| Prescott Valley | Noneas of Oct 16 | None | Moderate |
| Casas Adobes | Noneas of Oct 16 | None | Moderate |
| Lake Havasu City | Noneas of Oct 16 | None | Moderate |
| Sierra Vista | Noneas of Oct 16 | None | Moderate |
| San Luis | Noneas of Oct 16 | None | Moderate |
| Flowing Wells | Noneas of Oct 16 | None | Moderate |
| Douglas | Noneas of Oct 16 | None | Moderate |
| Sierra Vista Southeast | Noneas of Oct 16 | None | Moderate |
| Benson | Noneas of Oct 16 | None | Moderate |
| Jerome | Noneas of Oct 16 | None | Moderate |
| Quartzsite | Noneas of Oct 16 | None | Moderate |
| Phoenix | No live reading | Not available | Moderate |
| Tucson | No live reading | Not available | Moderate |
| Chandler | No live reading | Not available | Moderate |
| Gilbert | No live reading | Not available | Moderate |
| Glendale | No live reading | Not available | Moderate |
| Scottsdale | No live reading | Not available | Moderate |
| Peoria | No live reading | Not available | Moderate |
| Tempe | No live reading | Not available | Moderate |
| Surprise | No live reading | Not available | Moderate |
| Yuma | No live reading | Not available | Moderate |
| San Tan Valley | No live reading | Not available | Moderate |
| Goodyear | No live reading | Not available | Moderate |
| Buckeye | No live reading | Not available | Moderate |
| Avondale | No live reading | Not available | Moderate |
| Flagstaff | No live reading | Not available | Moderate |
| Casa Grande | No live reading | Not available | Moderate |
| Marana | No live reading | Not available | Moderate |
| Catalina Foothills | No live reading | Not available | Moderate |
| Oro Valley | No live reading | Not available | Moderate |
| Prescott | No live reading | Not available | Moderate |
| Bullhead City | No live reading | Not available | Moderate |
| Apache Junction | No live reading | Not available | Moderate |
| Sun City | No live reading | Not available | Moderate |
| El Mirage | No live reading | Not available | Moderate |
| Sahuarita | No live reading | Not available | Moderate |
| Kingman | No live reading | Not available | Moderate |
| Fortuna Foothills | No live reading | Not available | Moderate |
| Drexel Heights | No live reading | Not available | Moderate |
| Florence | No live reading | Not available | Moderate |
| Fountain Hills | No live reading | Not available | Moderate |
| Anthem | No live reading | Not available | Moderate |
| Rio Rico | No live reading | Not available | Moderate |
| Green Valley | No live reading | Not available | Moderate |
| Nogales | No live reading | Not available | Moderate |
| New River | No live reading | Not available | Moderate |
| Payson | No live reading | Not available | Moderate |
| Vail | No live reading | Not available | Moderate |
| Fort Mohave | No live reading | Not available | Moderate |
| Tanque Verde | No live reading | Not available | Moderate |
| Somerton | No live reading | Not available | Moderate |
| New Kingman-Butler | No live reading | Not available | Moderate |
| Valencia West | No live reading | Not available | Moderate |
| Chino Valley | No live reading | Not available | Moderate |
| Tucson Estates | No live reading | Not available | Moderate |
| Verde Village | No live reading | Not available | Moderate |
| Paradise Valley | No live reading | Not available | Moderate |
| Saddlebrooke | No live reading | Not available | Moderate |
| Cottonwood | No live reading | Not available | Moderate |
| Gold Canyon | No live reading | Not available | Moderate |
| Camp Verde | No live reading | Not available | Moderate |
| Show Low | No live reading | Not available | Moderate |
| Tucson Mountains | No live reading | Not available | Moderate |
| Vernon | No live reading | Not available | Moderate |
| Mesa Gardens Mobile Home Park | No live reading | Not available | Moderate |
| Wilhoit | No live reading | Not available | Moderate |
| Deer Valley | No live reading | Not available | Moderate |
| Oracle | No live reading | Not available | Moderate |
| Oak Creek | No live reading | Not available | Moderate |
| Catalina | No live reading | Not available | Moderate |
| Alhambra | No live reading | Not available | Moderate |
| Cornville | No live reading | Not available | Moderate |
| Bisbee | No live reading | Not available | Moderate |
| Windsor Mobile Home Park | No live reading | Not available | Moderate |
| Sedona | No live reading | Not available | Moderate |
| Lakeside | No live reading | Not available | Moderate |
| Cave Creek | No live reading | Not available | Moderate |
| Litchfield Park | No live reading | Not available | Moderate |
| Duncan | No live reading | Not available | Moderate |
| Indian Wells | No live reading | Not available | Moderate |
| Carefree | No live reading | Not available | Moderate |
| Corona De Tucson | No live reading | Not available | Moderate |
| Rio Verde | No live reading | Not available | Moderate |
| Arizona City | No live reading | Not available | Moderate |
| Holbrook | No live reading | Not available | Moderate |
| Williams | No live reading | Not available | Moderate |
| Sells | No live reading | Not available | Moderate |
| Globe | No live reading | Not available | Moderate |
| Dewey | No live reading | Not available | Moderate |
| Golden Valley | 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.