Hourly Weather | Today Wednesday, March 18, 2026
Champaign, Illinois
4 AM
Cloudy Weather
27°
Feels Like 10°
38
Humidity: 83%
UV Index: 0
Wind: 16 mph
5 AM
Cloudy Weather
27°
Feels Like 12°
35
Humidity: 83%
UV Index: 0
Wind: 16 mph
6 AM
Cloudy Weather
27°
Feels Like 12°
38
Humidity: 84%
UV Index: 0
Wind: 15 mph
7 AM
Snowy Weather
28°
Feels Like 10°
42
Humidity: 84%
UV Index: 0
Wind: 15 mph
8 AM
Partly Sunny with a Chance of Snow
28°
Feels Like 12°
51
Humidity: 80%
UV Index: 1
Wind: 15 mph
9 AM
Cloudy Weather
30°
Feels Like 18°
44
Humidity: 80%
UV Index: 2
Wind: 16 mph
10 AM
Cloudy Weather
34°
Feels Like 23°
44
Humidity: 77%
UV Index: 3
Wind: 16 mph
11 AM
Partly Sunny with a Chance of Snow
36°
Feels Like 28°
51
Humidity: 73%
UV Index: 4
Wind: 16 mph
12 PM
Cloudy Weather
39°
Feels Like 36°
44
Humidity: 69%
UV Index: 5
Wind: 15 mph
1 PM
Cloudy Weather
45°
Feels Like 39°
25
Humidity: 65%
UV Index: 5
Wind: 15 mph
2 PM
Cloudy Weather
46°
Feels Like 45°
0
Humidity: 61%
UV Index: 5
Wind: 13 mph
3 PM
Cloudy Weather
50°
Feels Like 48°
0
Humidity: 59%
UV Index: 4
Wind: 13 mph
4 PM
Cloudy Weather
52°
Feels Like 50°
0
Humidity: 56%
UV Index: 3
Wind: 12 mph
5 PM
Cloudy Weather
50°
Feels Like 48°
0
Humidity: 60%
UV Index: 2
Wind: 10 mph
6 PM
Cloudy Weather
46°
Feels Like 45°
0
Humidity: 67%
UV Index: 1
Wind: 8 mph
7 PM
Cloudy Weather
45°
Feels Like 41°
0
Humidity: 76%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Night
41°
Feels Like 39°
0
Humidity: 84%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
37°
Feels Like 37°
0
Humidity: 90%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Night
36°
Feels Like 36°
0
Humidity: 98%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
36°
Feels Like 34°
0
Humidity: 97%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

4 AM
49 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.47 µg/m³
  • PM10: 3.77 µg/m³
  • O3: 0.053 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 AM
49 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.69 µg/m³
  • PM10: 4.07 µg/m³
  • O3: 0.053 ppm
  • NO2: 0.8 ppb
  • SO2: 0.6 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

6 AM
48 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.75 µg/m³
  • PM10: 4.2 µg/m³
  • O3: 0.052 ppm
  • NO2: 0.8 ppb
  • SO2: 0.5 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

7 AM
48 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.67 µg/m³
  • PM10: 4.19 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.8 ppb
  • SO2: 0.5 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

8 AM
47 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.78 µg/m³
  • PM10: 4.4 µg/m³
  • O3: 0.051 ppm
  • NO2: 1 ppb
  • SO2: 0.5 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

9 AM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.91 µg/m³
  • PM10: 4.65 µg/m³
  • O3: 0.050 ppm
  • NO2: 1.5 ppb
  • SO2: 0.5 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

10 AM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.1 µg/m³
  • PM10: 4.93 µg/m³
  • O3: 0.050 ppm
  • NO2: 1.7 ppb
  • SO2: 0.6 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

11 AM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.36 µg/m³
  • PM10: 5.21 µg/m³
  • O3: 0.049 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.

12 PM
45 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.6 µg/m³
  • PM10: 5.43 µg/m³
  • O3: 0.049 ppm
  • NO2: 1.5 ppb
  • SO2: 0.8 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

1 PM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.06 µg/m³
  • PM10: 5.85 µg/m³
  • O3: 0.050 ppm
  • NO2: 1.3 ppb
  • SO2: 0.9 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

2 PM
50 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.27 µg/m³
  • PM10: 7.12 µg/m³
  • O3: 0.054 ppm
  • NO2: 1.1 ppb
  • SO2: 1.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

3 PM
57 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.3 µg/m³
  • PM10: 8.27 µg/m³
  • O3: 0.056 ppm
  • NO2: 1 ppb
  • SO2: 1.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

4 PM
63 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.04 µg/m³
  • PM10: 9.14 µg/m³
  • O3: 0.058 ppm
  • NO2: 1 ppb
  • SO2: 1.4 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM
50 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.35 µg/m³
  • PM10: 8.56 µg/m³
  • O3: 0.054 ppm
  • NO2: 1.7 ppb
  • SO2: 1.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

6 PM
42 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.27 µg/m³
  • PM10: 8.61 µg/m³
  • O3: 0.046 ppm
  • NO2: 3.6 ppb
  • SO2: 0.8 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

7 PM
36 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.66 µg/m³
  • PM10: 9.15 µg/m³
  • O3: 0.039 ppm
  • NO2: 6.1 ppb
  • SO2: 0.6 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

8 PM
34 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.23 µg/m³
  • PM10: 9.87 µg/m³
  • O3: 0.035 ppm
  • NO2: 7.5 ppb
  • SO2: 0.6 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

9 PM
37 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.95 µg/m³
  • PM10: 10.7 µg/m³
  • O3: 0.033 ppm
  • NO2: 7.9 ppb
  • SO2: 0.5 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

10 PM
40 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.61 µg/m³
  • PM10: 11.42 µg/m³
  • O3: 0.030 ppm
  • NO2: 7.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

11 PM
41 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.81 µg/m³
  • PM10: 11.58 µg/m³
  • O3: 0.028 ppm
  • NO2: 7.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.22 ppm

Health Recommendations:

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