AZ pollen report
Phoenix Pollen Report
Phoenix is no longer the desert escape allergy sufferers once sought. Decades of landscaping filled the Valley of the Sun with mulberry, olive, ash, and pine, while Bermuda grass pollinates most of the year and desert weeds like ragweed and careless weed take over in fall. With two growing seasons and mild winters, something is pollinating in Phoenix nearly every month.
Current report
Overall
Very Highheavy rain, moderate wind, haboob nearby but not the immediate area
What drives allergies in Phoenix
Trees: mulberry, olive, and ash (February – May)
Fruitless mulberry (Morus alba) and olive (Olea europaea) — both now restricted in new plantings because of their pollen — remain the Valley's most notorious spring allergens, with ash, mesquite, and palo verde adding to the mix.
Grasses: Bermuda, most of the year (March – November)
Bermuda grass blankets Phoenix lawns and golf courses and pollinates through the long warm season — one of the longest grass seasons in the country.
Weeds: ragweed and careless weed (September – November)
Fall brings ragweed (Ambrosia), careless weed (Amaranthus palmeri), and Russian thistle from desert washes and vacant lots.
Mold: monsoon spikes
Outdoor mold is modest in the dry months but spikes during the summer monsoon season and in irrigated landscapes.
Pollen patterns in Phoenix
In Phoenix, 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
Phoenix 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
heavy rain, moderate wind, haboob nearby but not the immediate area
Sun and cooler temps after alot of rain
sunshine after a very big rainstorm and cooler temperatures, in the 90s during the day and 70s at night, humidity around 40%
heavy rain storm
wind, sprinkling rain
Monsoon season, after a few good rainfalls.
Dry, some wind, weeds are all green and growing from all the rain
Suspect mold in bathroom
Monsoon storm during this collection period
Cities near Phoenix
Explore pollen activity in nearby cities reported by the PollyMap network.
Frequently asked questions
What is the pollen count in Phoenix today?
PollyMap publishes real, microscope-verified pollen counts for Phoenix — measured from physical air samples. The latest report on this page shows current tree, grass, weed, and mold levels.
Is the pollen count high in Phoenix right now?
Phoenix's worst stretches are February–April (mulberry, olive) and September–November (ragweed, careless weed), with grass pollen most of the year. The measured reports on this page show today's actual levels.
When is allergy season in Phoenix?
Nearly year-round: trees February–May, Bermuda grass March–November, desert weeds in fall, and mold spikes during the summer monsoons.
Why are Phoenix allergies worse than they used to be?
The modern metro is heavily landscaped — mulberry, olive, and Bermuda grass replaced bare desert — creating pollen loads the old desert never produced. Restrictions on new mulberry and olive plantings haven't removed the millions already growing.
Is pollen still bad in Phoenix in the fall?
Yes. Phoenix gets a second ragweed season from August through October, and Bermuda grass can keep pollinating in the warm fall. The mild desert winter means pollen never fully stops — some trees start by late winter.
Are you an allergy clinic in Phoenix? Claim your territory on PollyMap.
PollyMap is a local authority-building tool for allergy clinics, ENT practices, and any clinic that offers allergy care. By becoming the Official PollyMap Partner for your part of Phoenix, your clinic gets credited on real pollen reports, receives ready-to-share weekly content, and becomes the go-to local expert patients trust.
We assign each partner a designated territory within the Phoenix metro — like a franchise territory. Phoenix has room for multiple partners, but once your area is assigned, it's locked to your clinic.
Phoenix already has active PollyMap partners — and more territories are still available. The best areas go to the first clinics that sign up.
The Valley is enormous — Phoenix, Scottsdale, Mesa, Chandler, Gilbert, and Glendale each make PollyMap territories. The first allergy clinic in each becomes its credited pollen expert.
- Your clinic credited on every Phoenix pollen report
- Weekly real-sample reports and ready-to-share content under your brand
- Locked territory — competing clinics can't claim your area
- Become the go-to allergy expert in your part of Phoenix
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