Very High Pollen in Champaign, IL
Very high today, mostly weed pollen.
Last updated September 30, 2026
Driving it today
Forecast
About pollen in Champaign
Weed pollen is dominating the air in Champaign today, reaching a very high level that is likely to affect even those with mild sensitivities. This is the main story for the day, and anyone prone to seasonal allergies should expect noticeable symptoms if spending extended time outdoors. Looking ahead, weed pollen is expected to stay very high for the next couple of days before easing somewhat midweek, then climbing back into the high range afterward. This pattern fits the season, as ragweed and other late-blooming weeds typically peak in late September and into October across the region. Tree pollen, from species like oak and maple, is not a concern at this time of year, since that activity is more typical in 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 Champaign, IL today?
- Champaign, IL 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 2 to 5 of 5.
- Is weed pollen high in Champaign, IL 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 Champaign, IL?
- The main sources right now are Ragweed. Ragweed (Asteraceae (the daisy family), Late summer, fall) is actively pollinating.