Hourly Weather Forecast for Champaign, Illinois

Hourly Weather | Today › Tuesday, April 7, 2026

Active Weather Warnings

Freeze Watch
Freeze Warning

Champaign, Illinois

7 AM

32°

Feels Like 25°

Humidity: 71%

UV Index: 0

Wind: 10 mph

8 AM

34°

Feels Like 25°

Humidity: 66%

UV Index: 1

Wind: 12 mph

9 AM

36°

Feels Like 28°

Humidity: 60%

UV Index: 2

Wind: 13 mph

10 AM

37°

Feels Like 32°

Humidity: 56%

UV Index: 4

Wind: 13 mph

11 AM

39°

Feels Like 36°

Humidity: 53%

UV Index: 5

Wind: 13 mph

12 PM

39°

Feels Like 39°

Humidity: 49%

UV Index: 6

Wind: 12 mph

1 PM

43°

Feels Like 43°

Humidity: 46%

UV Index: 7

Wind: 12 mph

2 PM

45°

Feels Like 45°

Humidity: 43%

UV Index: 6

Wind: 10 mph

3 PM

45°

Feels Like 45°

Humidity: 41%

UV Index: 5

Wind: 10 mph

4 PM

46°

Feels Like 45°

Humidity: 39%

UV Index: 4

Wind: 10 mph

5 PM

48°

Feels Like 45°

Humidity: 36%

UV Index: 2

Wind: 10 mph

6 PM

46°

Feels Like 43°

Humidity: 37%

UV Index: 1

Wind: 10 mph

7 PM

45°

Feels Like 39°

Humidity: 38%

UV Index: 0

Wind: 9 mph

8 PM

43°

Feels Like 37°

Humidity: 42%

UV Index: 0

Wind: 8 mph

9 PM

41°

Feels Like 36°

Humidity: 47%

UV Index: 0

Wind: 8 mph

10 PM

39°

Feels Like 36°

Humidity: 50%

UV Index: 0

Wind: 8 mph

11 PM

39°

Feels Like 34°

Humidity: 53%

UV Index: 0

Wind: 8 mph

Hourly Air Quality Forecast - AQI (US EPA)

7 AM

37 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.65 µg/m³
PM₁₀: 5.38 µg/m³
O₃: 0.040 ppm
NO₂: 2 ppb
SO₂: 0.9 ppb
CO: 0.14 ppm

Health Recommendations:

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

8 AM

35 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.3 µg/m³
PM₁₀: 4.99 µg/m³
O₃: 0.038 ppm
NO₂: 2.4 ppb
SO₂: 0.9 ppb
CO: 0.14 ppm

Health Recommendations:

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

9 AM

35 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.39 µg/m³
PM₁₀: 4.02 µg/m³
O₃: 0.038 ppm
NO₂: 2.7 ppb
SO₂: 0.9 ppb
CO: 0.14 ppm

Health Recommendations:

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

10 AM

36 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.48 µg/m³
PM₁₀: 3.03 µg/m³
O₃: 0.039 ppm
NO₂: 2.5 ppb
SO₂: 0.9 ppb
CO: 0.14 ppm

Health Recommendations:

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

11 AM

37 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.76 µg/m³
PM₁₀: 2.23 µg/m³
O₃: 0.040 ppm
NO₂: 2 ppb
SO₂: 0.8 ppb
CO: 0.14 ppm

Health Recommendations:

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

12 PM

38 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.46 µg/m³
PM₁₀: 1.88 µg/m³
O₃: 0.041 ppm
NO₂: 1.6 ppb
SO₂: 0.8 ppb
CO: 0.13 ppm

Health Recommendations:

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

1 PM

40 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.53 µg/m³
PM₁₀: 1.93 µg/m³
O₃: 0.043 ppm
NO₂: 1.4 ppb
SO₂: 0.8 ppb
CO: 0.13 ppm

Health Recommendations:

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

2 PM

42 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.7 µg/m³
PM₁₀: 2.07 µg/m³
O₃: 0.046 ppm
NO₂: 1.2 ppb
SO₂: 0.7 ppb
CO: 0.13 ppm

Health Recommendations:

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

3 PM

45 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.92 µg/m³
PM₁₀: 2.27 µg/m³
O₃: 0.048 ppm
NO₂: 1 ppb
SO₂: 0.6 ppb
CO: 0.13 ppm

Health Recommendations:

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

4 PM

47 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.27 µg/m³
PM₁₀: 2.63 µg/m³
O₃: 0.050 ppm
NO₂: 0.9 ppb
SO₂: 0.6 ppb
CO: 0.13 ppm

Health Recommendations:

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

5 PM

48 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.65 µg/m³
PM₁₀: 3.03 µg/m³
O₃: 0.052 ppm
NO₂: 1 ppb
SO₂: 0.7 ppb
CO: 0.13 ppm

Health Recommendations:

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

6 PM

48 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.14 µg/m³
PM₁₀: 3.55 µg/m³
O₃: 0.052 ppm
NO₂: 1.3 ppb
SO₂: 0.7 ppb
CO: 0.13 ppm

Health Recommendations:

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

7 PM

48 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.52 µg/m³
PM₁₀: 3.97 µg/m³
O₃: 0.052 ppm
NO₂: 1.5 ppb
SO₂: 0.8 ppb
CO: 0.13 ppm

Health Recommendations:

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

8 PM

48 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.82 µg/m³
PM₁₀: 4.33 µg/m³
O₃: 0.052 ppm
NO₂: 1.6 ppb
SO₂: 0.8 ppb
CO: 0.13 ppm

Health Recommendations:

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

9 PM

47 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.1 µg/m³
PM₁₀: 4.66 µg/m³
O₃: 0.051 ppm
NO₂: 1.7 ppb
SO₂: 0.8 ppb
CO: 0.14 ppm

Health Recommendations:

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

10 PM

47 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.36 µg/m³
PM₁₀: 4.97 µg/m³
O₃: 0.051 ppm
NO₂: 1.7 ppb
SO₂: 0.7 ppb
CO: 0.14 ppm

Health Recommendations:

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

11 PM

46 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.38 µg/m³
PM₁₀: 5 µg/m³
O₃: 0.050 ppm
NO₂: 1.7 ppb
SO₂: 0.7 ppb
CO: 0.14 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

Freeze Watch

Freeze Watch issued April 6 at 11:27AM CDT until April 7 at 9:00AM CDT by NWS Lincoln IL

Apr 7, 1:00 AM → Apr 7, 9:00 AM

WHAT: Sub-freezing temperatures as low as 30 possible.

WHERE: De Witt, McLean, Peoria, Piatt, Tazewell, Woodford,
Champaign, and Vermilion Counties.

WHEN: From late tonight through Tuesday morning.

IMPACTS: Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.

+ Read More

Take steps now to protect tender plants from the cold.

Updated: Apr 6, 2:11 PM Source: NWS Alert

Moderate Expected Likely

Freeze Warning

Freeze Warning issued April 7 at 2:54AM CDT until April 7 at 9:00AM CDT by NWS Lincoln IL

Apr 7, 2:54 AM → Apr 7, 9:00 AM

WHAT: Sub-freezing temperatures as low as 30.

WHERE: De Witt, McLean, Peoria, Piatt, Tazewell, Woodford,
Champaign, Douglas, Edgar, and Vermilion Counties.

WHEN: Until 9 AM CDT this morning.

IMPACTS: Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.

+ Read More

Take steps now to protect tender plants from the cold.

Updated: Apr 7, 5:22 AM Source: NWS Alert

Hourly Air Quality Forecast - AQI (US EPA)

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Weather Alerts and Warnings for Champaign

Freeze Watch

Freeze Warning

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