Hourly Weather | Today Wednesday, May 20, 2026
Naperville, Illinois
5 PM
Cloudy Weather
59°
Feels Like 55°
0
Humidity: 50%
UV Index: 2
Wind: 14 mph
6 PM
Cloudy Weather
55°
Feels Like 52°
0
Humidity: 47%
UV Index: 2
Wind: 14 mph
7 PM
Cloudy Weather
54°
Feels Like 48°
0
Humidity: 50%
UV Index: 1
Wind: 13 mph
8 PM
Cloudy Weather
54°
Feels Like 48°
0
Humidity: 49%
UV Index: 0
Wind: 12 mph
9 PM
Cloudy Night
52°
Feels Like 46°
0
Humidity: 51%
UV Index: 0
Wind: 10 mph
10 PM
Cloudy Night
48°
Feels Like 45°
0
Humidity: 54%
UV Index: 0
Wind: 9 mph
11 PM
Cloudy Night
48°
Feels Like 43°
0
Humidity: 56%
UV Index: 0
Wind: 9 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 4.89 µg/m³
  • PM10: 5.47 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.9 ppb
  • SO2: 1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.5 µg/m³
  • PM10: 5.07 µg/m³
  • O3: 0.047 ppm
  • NO2: 1.3 ppb
  • SO2: 1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.9 µg/m³
  • PM10: 4.45 µg/m³
  • O3: 0.046 ppm
  • NO2: 1.8 ppb
  • SO2: 1.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.05 µg/m³
  • PM10: 3.58 µg/m³
  • O3: 0.044 ppm
  • NO2: 2.3 ppb
  • SO2: 1.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.32 µg/m³
  • PM10: 2.86 µg/m³
  • O3: 0.041 ppm
  • NO2: 2.7 ppb
  • SO2: 1.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.85 µg/m³
  • PM10: 2.43 µg/m³
  • O3: 0.039 ppm
  • NO2: 3.1 ppb
  • SO2: 1.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.82 µg/m³
  • PM10: 2.44 µg/m³
  • O3: 0.037 ppm
  • NO2: 3.5 ppb
  • SO2: 1.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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