Very High Pollen in Meridian, ID

Very high today, mostly weed pollen.

Last updated September 29, 2026

Today's index5out of 5Very High
WeedVery Highin season

Driving it today

Ragweed

Forecast

Wed
5
Thu
4
Fri
5
Sat
4

About pollen in Meridian

Weed pollen is dominating the air in Meridian today, reaching a very high level that is likely to affect even those with mild sensitivities. Anyone prone to seasonal allergies should expect noticeable symptoms, as this is about as active as weed pollen gets. It's the only pollen type of note right now, and it's driving the overall count to its peak for the season. Looking ahead, weed pollen will remain intense through the next several days, holding steady at very high or high levels with only slight dips in between. This pattern fits typical late-September conditions in the region, as ragweed and other common autumn weeds reach their seasonal high point before tapering off with the first hard frosts. Tree pollen, from species like cottonwood and juniper, remains dormant this time of year and won't factor in again until spring.

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).
  • Make sure to use an air purifier with HEPA filter in your home, especially in your bedroom. Don't forget to perform regular filter maintenance checks.

Common questions

What is the pollen count in Meridian, ID today?
Meridian, ID is at a very high 5 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 Meridian, ID right now?
Weed pollen is very high today at 5 of 5, and it's in season now. Most allergy sufferers will have symptoms.
What plants are causing allergies in Meridian, ID?
The main sources right now are Ragweed. Ragweed (Asteraceae (the daisy family), Late summer, fall) is actively pollinating.