Hourly Weather | Today Wednesday, March 18, 2026
Waukegan, Illinois
9 AM
Cloudy Weather
27°
Feels Like 10°
46
Humidity: 84%
UV Index: 1
Wind: 16 mph
10 AM
Snowy Weather
27°
Feels Like 10°
61
Humidity: 82%
UV Index: 1
Wind: 17 mph
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: 10 mph
5 PM
Cloudy Weather
39°
Feels Like 34°
14
Humidity: 72%
UV Index: 1
Wind: 9 mph
6 PM
Cloudy Weather
37°
Feels Like 32°
14
Humidity: 79%
UV Index: 0
Wind: 8 mph
7 PM
Cloudy Weather
36°
Feels Like 32°
11
Humidity: 82%
UV Index: 0
Wind: 7 mph
8 PM
Cloudy Weather
36°
Feels Like 34°
5
Humidity: 86%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Weather
34°
Feels Like 32°
5
Humidity: 90%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Weather
32°
Feels Like 32°
5
Humidity: 95%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Weather
34°
Feels Like 34°
5
Humidity: 92%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

9 AM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.96 µg/m³
  • PM10: 4.33 µg/m³
  • O3: 0.049 ppm
  • NO2: 2 ppb
  • SO2: 0.9 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

10 AM
45 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.26 µg/m³
  • PM10: 4.76 µg/m³
  • O3: 0.049 ppm
  • NO2: 2.2 ppb
  • SO2: 1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.89 µg/m³
  • PM10: 5.48 µg/m³
  • O3: 0.049 ppm
  • NO2: 1.9 ppb
  • SO2: 1 ppb
  • CO: 0.14 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: 6.11 µg/m³
  • PM10: 6.77 µg/m³
  • O3: 0.050 ppm
  • NO2: 1.6 ppb
  • SO2: 0.8 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.03 µg/m³
  • PM10: 8.73 µg/m³
  • O3: 0.052 ppm
  • NO2: 1.4 ppb
  • SO2: 0.7 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

2 PM
52 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 10.58 µg/m³
  • PM10: 11.36 µg/m³
  • O3: 0.055 ppm
  • NO2: 1.5 ppb
  • SO2: 0.6 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

3 PM
54 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 13.03 µg/m³
  • PM10: 13.92 µg/m³
  • O3: 0.055 ppm
  • NO2: 1.8 ppb
  • SO2: 0.6 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.

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

Pollutant Concentrations:

  • PM2.5: 15.1 µg/m³
  • PM10: 16.12 µg/m³
  • O3: 0.056 ppm
  • NO2: 2.4 ppb
  • SO2: 0.7 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 17.13 µg/m³
  • PM10: 18.34 µg/m³
  • O3: 0.054 ppm
  • NO2: 3.9 ppb
  • SO2: 0.7 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
65 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 18.83 µg/m³
  • PM10: 20.24 µg/m³
  • O3: 0.049 ppm
  • NO2: 6.8 ppb
  • SO2: 0.6 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
67 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 20.08 µg/m³
  • PM10: 21.7 µg/m³
  • O3: 0.043 ppm
  • NO2: 10.6 ppb
  • SO2: 0.5 ppb
  • CO: 0.23 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 21.21 µg/m³
  • PM10: 23.08 µg/m³
  • O3: 0.038 ppm
  • NO2: 12.1 ppb
  • SO2: 0.5 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.

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

Pollutant Concentrations:

  • PM2.5: 22.63 µg/m³
  • PM10: 24.73 µg/m³
  • O3: 0.035 ppm
  • NO2: 12.5 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.

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

Pollutant Concentrations:

  • PM2.5: 24.19 µg/m³
  • PM10: 26.42 µg/m³
  • O3: 0.032 ppm
  • NO2: 12.3 ppb
  • SO2: 0.3 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
78 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 25.16 µg/m³
  • PM10: 27.41 µg/m³
  • O3: 0.030 ppm
  • NO2: 11.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.27 ppm

Health Recommendations:

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