Hourly Weather | Today Tuesday, July 14, 2026
Active Weather Warnings
Chicago, Illinois
7 AM
Sunny Weather
79°
Feels Like 86°
0
Humidity: 79%
UV Index: 1
Wind: 6 mph
8 AM
Cloudy Weather
81°
Feels Like 88°
0
Humidity: 68%
UV Index: 2
Wind: 6 mph
9 AM
Sunny Weather
84°
Feels Like 93°
0
Humidity: 64%
UV Index: 3
Wind: 6 mph
10 AM
Sunny Weather
88°
Feels Like 97°
0
Humidity: 58%
UV Index: 5
Wind: 5 mph
11 AM
Sunny Weather
88°
Feels Like 100°
0
Humidity: 54%
UV Index: 7
Wind: 6 mph
12 PM
Sunny Weather
90°
Feels Like 102°
0
Humidity: 53%
UV Index: 9
Wind: 6 mph
1 PM
Sunny Weather
90°
Feels Like 102°
0
Humidity: 52%
UV Index: 10
Wind: 7 mph
2 PM
Cloudy Weather
90°
Feels Like 102°
0
Humidity: 51%
UV Index: 9
Wind: 7 mph
3 PM
Cloudy Weather
91°
Feels Like 100°
0
Humidity: 48%
UV Index: 7
Wind: 7 mph
4 PM
Cloudy Weather
91°
Feels Like 99°
0
Humidity: 49%
UV Index: 5
Wind: 7 mph
5 PM
Cloudy Weather
91°
Feels Like 97°
0
Humidity: 48%
UV Index: 3
Wind: 7 mph
6 PM
Cloudy Weather
90°
Feels Like 95°
0
Humidity: 49%
UV Index: 2
Wind: 6 mph
7 PM
Cloudy Weather
90°
Feels Like 93°
0
Humidity: 51%
UV Index: 1
Wind: 6 mph
8 PM
Cloudy Weather
88°
Feels Like 91°
0
Humidity: 54%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
86°
Feels Like 90°
0
Humidity: 60%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
86°
Feels Like 90°
0
Humidity: 62%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
84°
Feels Like 90°
0
Humidity: 65%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

7 AM
38 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.1 µg/m³
  • PM10: 9.38 µg/m³
  • O3: 0.007 ppm
  • NO2: 2.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

8 AM
36 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.67 µg/m³
  • PM10: 8.93 µg/m³
  • O3: 0.011 ppm
  • NO2: 2.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

9 AM
36 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.54 µg/m³
  • PM10: 8.81 µg/m³
  • O3: 0.010 ppm
  • NO2: 2.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

10 AM
37 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.8 µg/m³
  • PM10: 9.07 µg/m³
  • O3: 0.013 ppm
  • NO2: 2.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.67 µg/m³
  • PM10: 7.96 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.8 ppb
  • SO2: 0.9 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.34 µg/m³
  • PM10: 7.63 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.4 ppb
  • SO2: 0.8 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.48 µg/m³
  • PM10: 7.78 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.3 ppb
  • SO2: 0.7 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.65 µg/m³
  • PM10: 7.96 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.3 ppb
  • SO2: 0.6 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.01 µg/m³
  • PM10: 8.33 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.3 ppb
  • SO2: 0.6 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.59 µg/m³
  • PM10: 8.92 µg/m³
  • O3: 0.052 ppm
  • NO2: 0.4 ppb
  • SO2: 0.6 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.25 µg/m³
  • PM10: 9.61 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.8 ppb
  • SO2: 0.5 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.7 µg/m³
  • PM10: 10.07 µg/m³
  • O3: 0.042 ppm
  • NO2: 1.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.82 µg/m³
  • PM10: 10.2 µg/m³
  • O3: 0.038 ppm
  • NO2: 2.2 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.86 µg/m³
  • PM10: 10.26 µg/m³
  • O3: 0.033 ppm
  • NO2: 3.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.81 µg/m³
  • PM10: 10.22 µg/m³
  • O3: 0.024 ppm
  • NO2: 3.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 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: 9.56 µg/m³
  • PM10: 9.97 µg/m³
  • O3: 0.018 ppm
  • NO2: 4.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.15 µg/m³
  • PM10: 9.55 µg/m³
  • O3: 0.014 ppm
  • NO2: 4.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

Weather Alerts and Warnings for Chicago

Air Quality Alert

Air Quality Alert issued July 13 at 11:44AM CDT by NWS Chicago IL
Jul 13, 11:44 AM Jul 15, 12:00 AM
The Illinois Environmental Protection Agency has issued an Air
Pollution Action Day for Tuesday July 14th for the greater Chicago
Metropolitan Area and is in effect through Tuesday night.

An Air Pollution Action Day is declared when weather conditions are
such that widespread ozone and or particulate levels are expected to
be at or above the Unhealthy for Sensitive Groups category of the
Air Quality Index for multiple days.

Active children and adults, especially people with pulmonary or
respiratory disease such as asthma, should limit prolonged outdoor
activity.

Area residents are urged to reduce pollution levels. Air quality
forecasts, current air quality, and tips on how you can reduce your
emissions can be found at www.airnow.gov.

Media contact...Illinois EPA.
Updated: Jul 14, 6:30 AM Source: NWS Alert