High Pollen in Indianapolis, IN
High today, mostly weed pollen.
Last updated September 29, 2026
Driving it today
Forecast
About pollen in Indianapolis
Weed pollen is the main driver of today's conditions in Indianapolis, and levels are high enough to be noticeable for anyone sensitive to it. This is typical ragweed territory this time of year, and those with allergies may find symptoms more pronounced than they've been in recent weeks, especially during outdoor activities in the afternoon. Looking ahead, weed pollen is expected to remain high for the next couple of days before beginning to taper off, with a more noticeable drop by the end of the five-day stretch. This pattern fits the season well: late summer into fall is prime time for ragweed and other weeds to peak in the Midwest, while the region's oaks, maples, and other trees remain dormant until spring. Anyone affected by weed pollen should expect the current stretch to be the most demanding, with gradual relief as the week progresses.
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 Indianapolis, IN today?
- Indianapolis, IN 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 1 to 4 of 5.
- Is weed pollen high in Indianapolis, IN 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 Indianapolis, IN?
- The main sources right now are Ragweed. Ragweed (Asteraceae (the daisy family), Late summer, fall) is actively pollinating.