Hourly Weather | Today Sunday, October 26, 2025
Decatur, Illinois
12 PM
Cloudy Weather
57°
Feels Like 55°
0
Humidity: 46%
Wind: 12 mph
UV Index: 1
1 PM
Cloudy Weather
61°
Feels Like 57°
0
Humidity: 44%
Wind: 12 mph
UV Index: 1
2 PM
Cloudy Weather
63°
Feels Like 61°
0
Humidity: 41%
Wind: 12 mph
UV Index: 1
3 PM
Cloudy Weather
63°
Feels Like 61°
0
Humidity: 40%
Wind: 12 mph
UV Index: 1
4 PM
Cloudy Weather
64°
Feels Like 63°
0
Humidity: 38%
Wind: 12 mph
UV Index: 1
5 PM
Cloudy Weather
63°
Feels Like 59°
0
Humidity: 41%
Wind: 10 mph
UV Index: 0
6 PM
Cloudy Weather
59°
Feels Like 55°
0
Humidity: 45%
Wind: 9 mph
UV Index: 0
7 PM
Cloudy Weather
57°
Feels Like 54°
0
Humidity: 51%
Wind: 8 mph
UV Index: 0
8 PM
Cloudy Weather
57°
Feels Like 54°
0
Humidity: 50%
Wind: 9 mph
UV Index: 0
9 PM
Cloudy Weather
55°
Feels Like 52°
0
Humidity: 53%
Wind: 10 mph
UV Index: 0
10 PM
Cloudy Weather
55°
Feels Like 52°
0
Humidity: 54%
Wind: 10 mph
UV Index: 0
11 PM
Cloudy Weather
54°
Feels Like 48°
0
Humidity: 58%
Wind: 10 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

12 PM
35 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.37 µg/m³
  • PM10: 8.8 µg/m³
  • O3: 0.032 ppm
  • NO2: 2.7 ppb
  • SO2: 0.9 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

1 PM
35 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.36 µg/m³
  • PM10: 8.78 µg/m³
  • O3: 0.034 ppm
  • NO2: 2.5 ppb
  • SO2: 1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

2 PM
35 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.51 µg/m³
  • PM10: 8.88 µg/m³
  • O3: 0.037 ppm
  • NO2: 2.3 ppb
  • SO2: 1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

3 PM
35 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.51 µg/m³
  • PM10: 8.82 µg/m³
  • O3: 0.038 ppm
  • NO2: 2.2 ppb
  • SO2: 1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.43 µg/m³
  • PM10: 8.72 µg/m³
  • O3: 0.039 ppm
  • NO2: 2.3 ppb
  • SO2: 0.9 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.15 µg/m³
  • PM10: 8.42 µg/m³
  • O3: 0.038 ppm
  • NO2: 2.5 ppb
  • SO2: 0.9 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.82 µg/m³
  • PM10: 8.04 µg/m³
  • O3: 0.038 ppm
  • NO2: 2.7 ppb
  • SO2: 0.8 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.49 µg/m³
  • PM10: 7.68 µg/m³
  • O3: 0.038 ppm
  • NO2: 2.8 ppb
  • SO2: 0.7 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

8 PM
35 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.06 µg/m³
  • PM10: 7.24 µg/m³
  • O3: 0.038 ppm
  • NO2: 2.7 ppb
  • SO2: 0.6 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

9 PM
35 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.77 µg/m³
  • PM10: 6.97 µg/m³
  • O3: 0.038 ppm
  • NO2: 2.6 ppb
  • SO2: 0.6 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

10 PM
35 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.81 µg/m³
  • PM10: 7.07 µg/m³
  • O3: 0.037 ppm
  • NO2: 2.4 ppb
  • SO2: 0.7 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

11 PM
34 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.13 µg/m³
  • PM10: 7.46 µg/m³
  • O3: 0.036 ppm
  • NO2: 2.4 ppb
  • SO2: 0.8 ppb
  • CO: 0.12 ppm

Health Recommendations:

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