Hourly Weather | Today Wednesday, May 20, 2026
Madison, Wisconsin
6 PM
Cloudy Weather
61°
Feels Like 59°
0
Humidity: 48%
UV Index: 1
Wind: 8 mph
7 PM
Cloudy Weather
59°
Feels Like 57°
0
Humidity: 48%
UV Index: 1
Wind: 8 mph
8 PM
Cloudy Weather
57°
Feels Like 54°
0
Humidity: 50%
UV Index: 0
Wind: 8 mph
9 PM
Cloudy Night
55°
Feels Like 52°
0
Humidity: 52%
UV Index: 0
Wind: 8 mph
10 PM
Cloudy Night
54°
Feels Like 48°
0
Humidity: 55%
UV Index: 0
Wind: 8 mph
11 PM
Cloudy Night
52°
Feels Like 46°
0
Humidity: 59%
UV Index: 0
Wind: 8 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 1.36 µg/m³
  • PM10: 1.53 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 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: 1.46 µg/m³
  • PM10: 1.65 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.62 µg/m³
  • PM10: 1.83 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.5 ppb
  • SO2: 0.2 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.98 µg/m³
  • PM10: 2.22 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.44 µg/m³
  • PM10: 2.75 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.68 µg/m³
  • PM10: 3.07 µg/m³
  • O3: 0.041 ppm
  • NO2: 1.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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