AZ
Arizona Pollen Reports
Arizona experiences a hot, arid desert climate with long dry summers, mild winters, and very low annual rainfall.
Pollen patterns across Arizona
Tree pollen — especially mulberry, olive, ash, juniper, and mesquite — is the dominant trigger in late winter and early spring. Bermuda grass is the most common warm-season grass, and ragweed and tumbleweed (Russian thistle) drive the late-summer through fall load.
Arizona pollen calendar
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| tree | ||||||||||||
| grass | ||||||||||||
| weed | ||||||||||||
| mold |
Featured cities in Arizona
Don't see your city? PollyMap partners can serve any city in Arizona — request a local report below.
Don't see your city?
We cover every city in Arizona through our partner network. Request a report for your town and we'll route it to the nearest certified allergist.
Latest reports
heavy rain, moderate wind, haboob nearby but not the immediate area
Rain, wind, cooling temps into the 60s
Rain, wind, colder temps, into the 40s-50s
Sun and cooler temps after alot of rain
Monsoon rain, wildflower growth, cooling temperatures
Some rain, some wind, mostly sun
rain, some wind
wind, rain
Frequently asked questions
When is allergy season in Arizona?
Allergy season in Arizona typically runs from late winter through fall. Tree pollen rises first, followed by grass pollen in late spring and early summer, and weed pollen (especially ragweed) in late summer and fall.
What pollen is highest in Arizona?
In Arizona, the highest-pollen species are typically Mulberry, Olive, Mesquite in spring, Bermuda grass in early summer, and Ragweed in fall.
What months are worst for allergies in Arizona?
For most people, April and May (tree pollen) and September (ragweed) are the most difficult months in Arizona, with grass pollen creating a third peak in June.
Does Arizona have mold allergies?
Yes. The region's climate supports both outdoor and indoor mold exposure — particularly Alternaria, Cladosporium. Outdoor mold spore counts often rise after rain and in fall when leaves decay.
How can clinics become PollyMap collection partners?
Qualified allergy clinics, naturopathic offices, universities, and environmental health professionals can apply to host a PollyKit and become an official PollyMap collection partner. Applications are reviewed by the PollyMap team.
Become the lead collection partner for Arizona.
PollyMap is actively seeking allergy clinics and qualified collectors in Arizona.
Apply today