Hourly Weather | Today Tuesday, January 13, 2026
Chicago, Illinois
3 PM
Cloudy Weather
52°
Feels Like 43°
0
Humidity: 57%
Wind: 17 mph
UV Index: 1
4 PM
Cloudy Weather
48°
Feels Like 39°
0
Humidity: 60%
Wind: 17 mph
UV Index: 0
5 PM
Cloudy Night
46°
Feels Like 37°
0
Humidity: 64%
Wind: 16 mph
UV Index: 0
6 PM
Cloudy Weather
46°
Feels Like 37°
0
Humidity: 66%
Wind: 15 mph
UV Index: 0
7 PM
Cloudy Night
45°
Feels Like 32°
12
Humidity: 74%
Wind: 17 mph
UV Index: 0
8 PM
Cloudy Night
43°
Feels Like 30°
12
Humidity: 75%
Wind: 16 mph
UV Index: 0
9 PM
Cloudy Night
43°
Feels Like 30°
16
Humidity: 76%
Wind: 16 mph
UV Index: 0
10 PM
Rainy Night
41°
Feels Like 28°
40
Humidity: 76%
Wind: 16 mph
UV Index: 0
11 PM
Cloudy Night
41°
Feels Like 28°
37
Humidity: 76%
Wind: 16 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

3 PM
31 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.5 µg/m³
  • PM10: 5.57 µg/m³
  • O3: 0.034 ppm
  • NO2: 3.1 ppb
  • SO2: 1.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.05 µg/m³
  • PM10: 5.06 µg/m³
  • O3: 0.034 ppm
  • NO2: 3.4 ppb
  • SO2: 1 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.94 µg/m³
  • PM10: 4.93 µg/m³
  • O3: 0.034 ppm
  • NO2: 4 ppb
  • SO2: 1 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.82 µg/m³
  • PM10: 4.8 µg/m³
  • O3: 0.034 ppm
  • NO2: 4.3 ppb
  • SO2: 0.9 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.59 µg/m³
  • PM10: 4.54 µg/m³
  • O3: 0.033 ppm
  • NO2: 4.4 ppb
  • SO2: 0.7 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.38 µg/m³
  • PM10: 4.29 µg/m³
  • O3: 0.033 ppm
  • NO2: 4.4 ppb
  • SO2: 0.6 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.18 µg/m³
  • PM10: 4.04 µg/m³
  • O3: 0.034 ppm
  • NO2: 4.2 ppb
  • SO2: 0.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.98 µg/m³
  • PM10: 3.76 µg/m³
  • O3: 0.034 ppm
  • NO2: 3.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.8 µg/m³
  • PM10: 3.49 µg/m³
  • O3: 0.034 ppm
  • NO2: 3.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

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