Hourly Weather | Today › Tuesday, October 13, 2026
Decatur, Illinois
8 PM
Cloudy Night
81°
Feels Like 82°
7
Humidity: 67%
UV Index: 0
Wind: 5 mph
9 PM
Cloudy Night
77°
Feels Like 79°
7
Humidity: 73%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Night
75°
Feels Like 75°
6
Humidity: 79%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
73°
Feels Like 75°
5
Humidity: 83%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 5.39 µg/m³
  • PM10: 9.26 µg/m³
  • O3: 0.031 ppm
  • NO2: 4.4 ppb
  • SO2: 0.7 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.19 µg/m³
  • PM10: 8.84 µg/m³
  • O3: 0.030 ppm
  • NO2: 4.1 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
27 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.97 µg/m³
  • PM10: 8.31 µg/m³
  • O3: 0.030 ppm
  • NO2: 3.7 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
29 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.62 µg/m³
  • PM10: 7.3 µg/m³
  • O3: 0.031 ppm
  • NO2: 2.8 ppb
  • SO2: 0.8 ppb
  • CO: 0.11 ppm

Health Recommendations:

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