Hourly Weather Forecast for Champaign, Illinois

Hourly Weather | Today › Monday, April 27, 2026

Active Weather Warnings

Severe Thunderstorm Watch

Champaign, Illinois

1 PM

63°

Feels Like 54°

Humidity: 92%

UV Index: 2

Wind: 21 mph

2 PM

63°

Feels Like 59°

Humidity: 91%

UV Index: 2

Wind: 21 mph

3 PM

64°

Feels Like 61°

Humidity: 89%

UV Index: 2

Wind: 22 mph

4 PM

66°

Feels Like 57°

Humidity: 86%

UV Index: 1

Wind: 22 mph

5 PM

66°

Feels Like 63°

Humidity: 84%

UV Index: 1

Wind: 22 mph

6 PM

68°

Feels Like 64°

Humidity: 82%

UV Index: 1

Wind: 21 mph

7 PM

70°

Feels Like 61°

Humidity: 79%

UV Index: 0

Wind: 20 mph

8 PM

68°

Feels Like 59°

Humidity: 82%

UV Index: 0

Wind: 18 mph

9 PM

66°

Feels Like 63°

Humidity: 86%

UV Index: 0

Wind: 16 mph

10 PM

64°

Feels Like 61°

Humidity: 89%

UV Index: 0

Wind: 14 mph

11 PM

64°

Feels Like 61°

Humidity: 90%

UV Index: 0

Wind: 13 mph

Hourly Air Quality Forecast - AQI (US EPA)

1 PM

31 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.91 µg/m³
PM₁₀: 3.19 µg/m³
O₃: 0.033 ppm
NO₂: 0.7 ppb
SO₂: 0.3 ppb
CO: 0.12 ppm

Health Recommendations:

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

2 PM

32 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.29 µg/m³
PM₁₀: 3.55 µg/m³
O₃: 0.035 ppm
NO₂: 0.7 ppb
SO₂: 0.3 ppb
CO: 0.12 ppm

Health Recommendations:

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

3 PM

32 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.01 µg/m³
PM₁₀: 3.18 µg/m³
O₃: 0.035 ppm
NO₂: 0.6 ppb
SO₂: 0.2 ppb
CO: 0.11 ppm

Health Recommendations:

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

4 PM

32 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.25 µg/m³
PM₁₀: 2.36 µg/m³
O₃: 0.034 ppm
NO₂: 0.5 ppb
SO₂: 0.2 ppb
CO: 0.11 ppm

Health Recommendations:

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

5 PM

31 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.9 µg/m³
PM₁₀: 1.97 µg/m³
O₃: 0.034 ppm
NO₂: 0.6 ppb
SO₂: 0.2 ppb
CO: 0.11 ppm

Health Recommendations:

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

6 PM

31 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.77 µg/m³
PM₁₀: 1.82 µg/m³
O₃: 0.033 ppm
NO₂: 0.8 ppb
SO₂: 0.2 ppb
CO: 0.12 ppm

Health Recommendations:

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

7 PM

29 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.88 µg/m³
PM₁₀: 1.92 µg/m³
O₃: 0.032 ppm
NO₂: 1 ppb
SO₂: 0.2 ppb
CO: 0.12 ppm

Health Recommendations:

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

8 PM

28 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.05 µg/m³
PM₁₀: 2.09 µg/m³
O₃: 0.030 ppm
NO₂: 1.2 ppb
SO₂: 0.2 ppb
CO: 0.12 ppm

Health Recommendations:

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

9 PM

26 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2 µg/m³
PM₁₀: 2.05 µg/m³
O₃: 0.028 ppm
NO₂: 1.3 ppb
SO₂: 0.2 ppb
CO: 0.12 ppm

Health Recommendations:

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

10 PM

25 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.66 µg/m³
PM₁₀: 1.71 µg/m³
O₃: 0.027 ppm
NO₂: 1.4 ppb
SO₂: 0.2 ppb
CO: 0.12 ppm

Health Recommendations:

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

11 PM

24 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.29 µg/m³
PM₁₀: 1.35 µg/m³
O₃: 0.025 ppm
NO₂: 1.5 ppb
SO₂: 0.2 ppb
CO: 0.12 ppm

Health Recommendations:

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

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Champaign

Severe Future Possible

Severe Thunderstorm Watch

Severe Thunderstorm Watch issued April 27 at 11:49AM CDT until April 27 at 4:00PM CDT by NWS Lincoln IL

Apr 27, 11:49 AM → Apr 27, 4:00 PM

SEVERE THUNDERSTORM WATCH 158 REMAINS VALID UNTIL 4 PM CDT THIS
AFTERNOON FOR THE FOLLOWING AREAS

IN ILLINOIS THIS WATCH INCLUDES 22 COUNTIES

IN CENTRAL ILLINOIS

CHRISTIAN DE WITT LOGAN
MACON MCLEAN SANGAMON
SHELBY

IN EAST CENTRAL ILLINOIS

CHAMPAIGN CLARK COLES
CUMBERLAND DOUGLAS EDGAR
MOULTRIE PIATT VERMILION

IN SOUTHEAST ILLINOIS

CLAY CRAWFORD EFFINGHAM
JASPER LAWRENCE RICHLAND

THIS INCLUDES THE CITIES OF BLOOMINGTON, CHAMPAIGN, CHARLESTON,
CLINTON, DANVILLE, DECATUR, EFFINGHAM, FLORA, GREENUP,
LAWRENCEVILLE, LINCOLN, MARSHALL, MATTOON, MONTICELLO, NEWTON,
NORMAL, OLNEY, PARIS, ROBINSON, SHELBYVILLE, SPRINGFIELD,
SULLIVAN, TAYLORVILLE, TUSCOLA, AND URBANA.

Updated: Apr 27, 12:17 PM Source: NWS Alert

Hourly Air Quality Forecast - AQI (US EPA)

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Weather Alerts and Warnings for Champaign

Severe Thunderstorm Watch

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