Hourly Weather | Today › Saturday, October 3, 2026
Chicago, Illinois
8 PM
Cloudy Night
63°
Feels Like 61°
0
Humidity: 65%
UV Index: 0
Wind: 7 mph
9 PM
Cloudy Night
61°
Feels Like 59°
0
Humidity: 71%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Night
61°
Feels Like 59°
0
Humidity: 75%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Night
61°
Feels Like 57°
0
Humidity: 76%
UV Index: 0
Wind: 8 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 5.9 µg/m³
  • PM10: 6.45 µg/m³
  • O3: 0.028 ppm
  • NO2: 4.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.03 µg/m³
  • PM10: 6.59 µg/m³
  • O3: 0.027 ppm
  • NO2: 4.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.17 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: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.04 µg/m³
  • PM10: 6.61 µg/m³
  • O3: 0.027 ppm
  • NO2: 4.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.89 µg/m³
  • PM10: 6.44 µg/m³
  • O3: 0.026 ppm
  • NO2: 3.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

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