Hourly Weather | Today Wednesday, March 18, 2026
Waukegan, Illinois
11 AM
Cloudy Weather
28°
Feels Like 16°
40
Humidity: 79%
UV Index: 1
Wind: 16 mph
12 PM
Cloudy Weather
32°
Feels Like 19°
34
Humidity: 76%
UV Index: 1
Wind: 16 mph
1 PM
Cloudy Weather
34°
Feels Like 21°
27
Humidity: 74%
UV Index: 2
Wind: 15 mph
2 PM
Cloudy Weather
36°
Feels Like 28°
14
Humidity: 73%
UV Index: 2
Wind: 12 mph
3 PM
Cloudy Weather
37°
Feels Like 30°
14
Humidity: 72%
UV Index: 2
Wind: 10 mph
4 PM
Cloudy Weather
37°
Feels Like 34°
14
Humidity: 73%
UV Index: 1
Wind: 9 mph
5 PM
Cloudy Weather
39°
Feels Like 36°
14
Humidity: 72%
UV Index: 1
Wind: 8 mph
6 PM
Cloudy Weather
37°
Feels Like 34°
14
Humidity: 79%
UV Index: 0
Wind: 7 mph
7 PM
Cloudy Weather
36°
Feels Like 34°
11
Humidity: 82%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Night
37°
Feels Like 37°
5
Humidity: 77%
UV Index: 0
Wind: 5 mph
9 PM
Cloudy Night
37°
Feels Like 37°
5
Humidity: 80%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Weather
37°
Feels Like 37°
5
Humidity: 82%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Weather
37°
Feels Like 36°
5
Humidity: 83%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 5.02 µg/m³
  • PM10: 5.74 µg/m³
  • O3: 0.048 ppm
  • NO2: 2.2 ppb
  • SO2: 1.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.87 µg/m³
  • PM10: 6.55 µg/m³
  • O3: 0.048 ppm
  • NO2: 1.9 ppb
  • SO2: 1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.32 µg/m³
  • PM10: 7.98 µg/m³
  • O3: 0.050 ppm
  • NO2: 1.6 ppb
  • SO2: 0.9 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.45 µg/m³
  • PM10: 10.17 µg/m³
  • O3: 0.053 ppm
  • NO2: 1.7 ppb
  • SO2: 0.9 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.49 µg/m³
  • PM10: 12.34 µg/m³
  • O3: 0.054 ppm
  • NO2: 2 ppb
  • SO2: 0.9 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

4 PM
52 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.15 µg/m³
  • PM10: 14.14 µg/m³
  • O3: 0.054 ppm
  • NO2: 2.5 ppb
  • SO2: 0.9 ppb
  • CO: 0.16 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM
56 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.64 µg/m³
  • PM10: 15.8 µg/m³
  • O3: 0.052 ppm
  • NO2: 3.9 ppb
  • SO2: 0.8 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 PM
58 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.95 µg/m³
  • PM10: 17.3 µg/m³
  • O3: 0.046 ppm
  • NO2: 6.7 ppb
  • SO2: 0.7 ppb
  • CO: 0.20 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

7 PM
61 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 17.1 µg/m³
  • PM10: 18.66 µg/m³
  • O3: 0.041 ppm
  • NO2: 10.4 ppb
  • SO2: 0.6 ppb
  • CO: 0.22 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

8 PM
63 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 18.21 µg/m³
  • PM10: 20.04 µg/m³
  • O3: 0.037 ppm
  • NO2: 11.9 ppb
  • SO2: 0.6 ppb
  • CO: 0.24 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

9 PM
66 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 19.62 µg/m³
  • PM10: 21.69 µg/m³
  • O3: 0.035 ppm
  • NO2: 12.4 ppb
  • SO2: 0.6 ppb
  • CO: 0.25 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

10 PM
69 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 21.11 µg/m³
  • PM10: 23.36 µg/m³
  • O3: 0.032 ppm
  • NO2: 12.4 ppb
  • SO2: 0.5 ppb
  • CO: 0.26 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

11 PM
72 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 22.26 µg/m³
  • PM10: 24.63 µg/m³
  • O3: 0.029 ppm
  • NO2: 12.3 ppb
  • SO2: 0.4 ppb
  • CO: 0.26 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.