Hourly Weather | Today Wednesday, March 18, 2026
Aurora, Illinois
10 AM
Cloudy Weather
28°
Feels Like 14°
44
Humidity: 83%
UV Index: 1
Wind: 15 mph
11 AM
Cloudy Weather
30°
Feels Like 19°
44
Humidity: 78%
UV Index: 2
Wind: 15 mph
12 PM
Snowy Weather
34°
Feels Like 21°
51
Humidity: 75%
UV Index: 2
Wind: 15 mph
1 PM
Cloudy Weather
36°
Feels Like 27°
44
Humidity: 72%
UV Index: 2
Wind: 15 mph
2 PM
Cloudy Weather
37°
Feels Like 32°
12
Humidity: 70%
UV Index: 3
Wind: 12 mph
3 PM
Cloudy Weather
39°
Feels Like 36°
12
Humidity: 69%
UV Index: 3
Wind: 12 mph
4 PM
Cloudy Weather
43°
Feels Like 37°
12
Humidity: 66%
UV Index: 2
Wind: 10 mph
5 PM
Cloudy Weather
41°
Feels Like 36°
12
Humidity: 71%
UV Index: 1
Wind: 9 mph
6 PM
Cloudy Weather
39°
Feels Like 36°
12
Humidity: 74%
UV Index: 1
Wind: 7 mph
7 PM
Cloudy Weather
37°
Feels Like 34°
8
Humidity: 81%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Weather
36°
Feels Like 34°
0
Humidity: 85%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Weather
34°
Feels Like 32°
0
Humidity: 90%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Weather
34°
Feels Like 32°
0
Humidity: 92%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Weather
34°
Feels Like 32°
0
Humidity: 93%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 3.95 µg/m³
  • PM10: 4.41 µg/m³
  • O3: 0.048 ppm
  • NO2: 2.2 ppb
  • SO2: 0.8 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.16 µg/m³
  • PM10: 4.61 µg/m³
  • O3: 0.048 ppm
  • NO2: 1.9 ppb
  • SO2: 0.8 ppb
  • CO: 0.14 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: 4.93 µg/m³
  • PM10: 5.41 µg/m³
  • O3: 0.049 ppm
  • NO2: 1.7 ppb
  • SO2: 0.8 ppb
  • CO: 0.14 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: 6.43 µg/m³
  • PM10: 7 µg/m³
  • O3: 0.050 ppm
  • NO2: 1.5 ppb
  • SO2: 1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.85 µg/m³
  • PM10: 9.62 µg/m³
  • O3: 0.054 ppm
  • NO2: 1.5 ppb
  • SO2: 1.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.02 µg/m³
  • PM10: 11.98 µg/m³
  • O3: 0.056 ppm
  • NO2: 1.6 ppb
  • SO2: 1.3 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.

4 PM
62 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 12.46 µg/m³
  • PM10: 13.56 µg/m³
  • O3: 0.058 ppm
  • NO2: 1.7 ppb
  • SO2: 1.4 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.

5 PM
55 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 13.21 µg/m³
  • PM10: 14.46 µg/m³
  • O3: 0.056 ppm
  • NO2: 3 ppb
  • SO2: 1.2 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.

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

Pollutant Concentrations:

  • PM2.5: 13.8 µg/m³
  • PM10: 15.22 µg/m³
  • O3: 0.049 ppm
  • NO2: 5.7 ppb
  • SO2: 0.9 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 14.56 µg/m³
  • PM10: 16.15 µg/m³
  • O3: 0.043 ppm
  • NO2: 9.3 ppb
  • SO2: 0.7 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
57 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.5 µg/m³
  • PM10: 17.27 µg/m³
  • O3: 0.038 ppm
  • NO2: 11 ppb
  • SO2: 0.7 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.

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

Pollutant Concentrations:

  • PM2.5: 16.65 µg/m³
  • PM10: 18.59 µg/m³
  • O3: 0.035 ppm
  • NO2: 11.5 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
62 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 17.58 µg/m³
  • PM10: 19.64 µg/m³
  • O3: 0.033 ppm
  • NO2: 11.4 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.

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

Pollutant Concentrations:

  • PM2.5: 17.84 µg/m³
  • PM10: 19.95 µg/m³
  • O3: 0.030 ppm
  • NO2: 10.7 ppb
  • SO2: 0.4 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.