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Today | Weather | Friday, December 26, 2025
Active Weather Warnings

Weather in Champaign, Illinois

01:06 AM
Now
Rainy Weather
52° F
Feels Like 45°
Precipitation 49 %
Wind 10 mph
Humidity 95 %
Today
Cloudy Weather
Day 61°
Night 39°
Precipitation 25 %
Wind 14 mph
UV Index (0 - 11+) 2

Champaign Weather Forecast Updated

Last updated on

Air Quality in Champaign

NOW
32 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 7.74 µg/m³
PM10 9.2 µg/m³
O3 0.029 ppm
NO2 2 ppb
SO2 0.3 ppb
CO 0.15 ppm
NH3 0.05 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)
PM2.5 – 7.74 µg/m³
PM10 – 9.2 µg/m³
O3 – 57.39 µg/m³
NO2 – 3.8 µg/m³
SO2 – 0.89 µg/m³
CO – 166.35 µg/m³
NH3 – 0.05 µg/m³
NO – 0 µg/m³
View Hourly Air Quality Forecast

Weather Alerts and Warnings for Champaign

Moderate Expected Likely

Dense Fog Advisory

Dense Fog Advisory issued December 25 at 11:18PM CST until December 26 at 4:00AM CST by NWS Lincoln IL
Dec 25, 11:18 PM → Dec 26, 4:00 AM
WHAT: Visibility one quarter mile or less in dense fog.

WHERE: Portions of central, east central, southeast, and west
central Illinois.

WHEN: Until 4 AM CST Friday.

IMPACTS: Low visibility could make driving conditions hazardous.
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If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Updated: Dec 26, 12:05 AM Source: NWS Alert