Today | Weather | Wednesday, September 9, 2026

Weather in Champaign, Illinois

08:50 PM
Now
Cloudy Weather
75° F
Feels Like 79°
Precipitation 34 %
Wind 4 mph
Humidity 79 %
Today
Stormy Weather
Day 90°
Night 68°
Precipitation 88 %
Wind 5 mph

Champaign Weather Forecast Updated

31 minutes ago
Last updated on

Air Quality in Champaign

NOW
34 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 7.71 µg/m³
PM10 8.05 µg/m³
O3 0.036 ppm
NO2 2.8 ppb
SO2 0.8 ppb
CO 0.13 ppm
NH3 1.29 µg/m³
NO 0 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.57.71 µg/m³
PM108.05 µg/m³
O371.18 µg/m³
NO25.27 µg/m³
SO22.06 µg/m³
CO143.56 µg/m³
NH31.29 µg/m³
NO0 µg/m³