AZ pollen report
Flagstaff Pollen Report
Flagstaff is an active PollyMap collection site. Carefree Allergy collects weekly pollen samples used to publish local reports.
Current report
Overall
ModeratePine and grass pollen lead Flagstaff's early summer counts. Alternaria mold is climbing as monsoon humidity builds.
Pollen patterns in Flagstaff
In Flagstaff, tree pollen — including Mulberry, Olive, Mesquite — typically dominates from late winter through spring. Bermuda grass is the most common warm-season pollinator, and Ragweed drives the largest fall pollen load.
Top trees
- Mulberry
- Olive
- Mesquite
- Juniper
- Ash
Top grasses
- Bermuda
- Buffalo
- Saltgrass
Top weeds
- Ragweed
- Russian thistle (tumbleweed)
- Pigweed
- Sagebrush
Top molds
- Alternaria
- Cladosporium
- Aspergillus
Flagstaff pollen calendar
Typical monthly intensity across the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| tree | ||||||||||||
| grass | ||||||||||||
| weed | ||||||||||||
| mold |
Historical reports
Cities near Flagstaff
Explore pollen activity in nearby cities reported by the PollyMap network.
Frequently asked questions
When is allergy season in Flagstaff?
In Flagstaff, allergy season starts with tree pollen in late winter and early spring, transitions to grass pollen in May and June, and ends with weed pollen — primarily ragweed and sagebrush — from August through October.
What pollen is highest in Flagstaff?
The most prevalent local pollens in Flagstaff include Mulberry, Olive, Mesquite in the spring season.
What months are worst for allergies in Flagstaff?
Most Flagstaff allergy sufferers report the worst symptoms during peak tree pollen in March-May and again during ragweed season in September.
Does Flagstaff have mold allergies?
Yes. Flagstaff's climate supports Alternaria and Cladosporium spore exposure, with counts typically peaking in the warm and humid months.
Why are allergies bad in Flagstaff?
Local geography, climate, and seasonal plant cycles all influence allergen load in Flagstaff. The combination of regional vegetation and weather creates predictable spring and fall pollen peaks.
Is there a local pollen collection site in Flagstaff?
Yes. Flagstaff is an active PollyMap collection site hosted by Carefree Allergy.
How can my clinic become a PollyMap partner in Flagstaff?
Clinics in Flagstaff can apply to become the official PollyMap collection partner. Approved partners receive PollyKits weekly, conduct 24-48 hour collections, and mail samples back for microscope analysis.