High Pollen in Gilbert, AZ

High today, mostly weed pollen.

Last updated September 29, 2026

Today's index4out of 5High
TreeNonein season
GrassModeratein season
WeedHighin season

Driving it today

GrassesRagweed

Forecast

Wed
5
Thu
5
Fri
5
Sat
5

About pollen in Gilbert

Weed pollen is the dominant story in Gilbert today, reaching a level that is likely to be quite bothersome for anyone sensitive to it. Grass pollen is also present at a moderate level, adding to the overall load, while tree pollen is quiet and not a concern right now. Combined, this makes for a day when those prone to allergies may notice symptoms more than usual. Looking ahead, this pattern is expected to hold steady over the next several days, with weed pollen remaining very high and grass staying at a moderate, noticeable level. Tree pollen should continue to stay absent through this stretch. This lines up with the season: late September in the desert Southwest is prime time for weeds like ragweed, well past the spring peak for trees such as mesquite, olive, and ash, and beyond the late-spring surge typically seen in grasses.

What to do today

  • Avoid mowing the lawn and raking leaves.
  • When driving the car, close your windows and turn the air conditioning system to recirculation mode.
  • Keep your windows closed and turn on your air purifier or air conditioning.
  • Consider staying indoors during the peak pollen hours (morning and early afternoon).

Common questions

What is the pollen count in Gilbert, AZ today?
Gilbert, AZ is at a high 4 out of 5 on the Universal Pollen Index today, driven mainly by weed pollen. Over the next five days it ranges from 4 to 5 of 5.
Is weed pollen high in Gilbert, AZ right now?
Weed pollen is high today at 4 of 5, and it's in season now. Many allergy sufferers will have symptoms.
What plants are causing allergies in Gilbert, AZ?
The main sources right now are Grasses and Ragweed. Elm (Ulmaceae (the Elm family), Two distinct seasons, late winter to early spring, and late summer to fall (species dependent)) is actively pollinating.