Hourly Weather | Today Wednesday, August 12, 2026
Madison, Wisconsin
8 AM
Foggy Weather
73°
Feels Like 77°
15
Humidity: 89%
UV Index: 1
Wind: 5 mph
9 AM
Foggy Weather
75°
Feels Like 79°
15
Humidity: 84%
UV Index: 1
Wind: 5 mph
10 AM
Foggy Weather
77°
Feels Like 82°
19
Humidity: 81%
UV Index: 2
Wind: 6 mph
11 AM
Sunny with a Chance of Thunderstorms
79°
Feels Like 82°
51
Humidity: 77%
UV Index: 2
Wind: 6 mph
12 PM
Foggy Weather
81°
Feels Like 88°
47
Humidity: 72%
UV Index: 3
Wind: 6 mph
1 PM
Foggy Weather
82°
Feels Like 90°
40
Humidity: 69%
UV Index: 3
Wind: 6 mph
2 PM
Cloudy Weather
82°
Feels Like 91°
34
Humidity: 65%
UV Index: 3
Wind: 6 mph
3 PM
Cloudy Weather
84°
Feels Like 90°
34
Humidity: 61%
UV Index: 2
Wind: 6 mph
4 PM
Cloudy Weather
84°
Feels Like 90°
37
Humidity: 58%
UV Index: 2
Wind: 6 mph
5 PM
Cloudy Weather
84°
Feels Like 91°
47
Humidity: 60%
UV Index: 3
Wind: 6 mph
6 PM
Sunny with a Chance of Thunderstorms
82°
Feels Like 86°
51
Humidity: 66%
UV Index: 2
Wind: 6 mph
7 PM
Cloudy Weather
82°
Feels Like 88°
47
Humidity: 67%
UV Index: 1
Wind: 6 mph
8 PM
Cloudy Weather
81°
Feels Like 84°
2
Humidity: 73%
UV Index: 0
Wind: 5 mph
9 PM
Cloudy Night
77°
Feels Like 81°
2
Humidity: 80%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Night
75°
Feels Like 79°
2
Humidity: 85%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
73°
Feels Like 75°
2
Humidity: 90%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

8 AM
41 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.75 µg/m³
  • PM10: 10.03 µg/m³
  • O3: 0.008 ppm
  • NO2: 1.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

9 AM
40 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.57 µg/m³
  • PM10: 9.86 µg/m³
  • O3: 0.009 ppm
  • NO2: 1.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

10 AM
39 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.45 µg/m³
  • PM10: 9.74 µg/m³
  • O3: 0.010 ppm
  • NO2: 1.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

11 AM
39 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.31 µg/m³
  • PM10: 9.59 µg/m³
  • O3: 0.019 ppm
  • NO2: 1.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

12 PM
38 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.02 µg/m³
  • PM10: 9.3 µg/m³
  • O3: 0.025 ppm
  • NO2: 1.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

1 PM
36 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.66 µg/m³
  • PM10: 8.94 µg/m³
  • O3: 0.028 ppm
  • NO2: 1 ppb
  • SO2: 0.3 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

2 PM
33 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.92 µg/m³
  • PM10: 8.16 µg/m³
  • O3: 0.032 ppm
  • NO2: 0.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.28 µg/m³
  • PM10: 7.5 µg/m³
  • O3: 0.034 ppm
  • NO2: 0.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

4 PM
32 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.11 µg/m³
  • PM10: 7.32 µg/m³
  • O3: 0.035 ppm
  • NO2: 0.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.26 µg/m³
  • PM10: 7.48 µg/m³
  • O3: 0.034 ppm
  • NO2: 0.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

6 PM
31 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.49 µg/m³
  • PM10: 7.72 µg/m³
  • O3: 0.031 ppm
  • NO2: 1.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

7 PM
32 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.63 µg/m³
  • PM10: 7.88 µg/m³
  • O3: 0.029 ppm
  • NO2: 1.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

8 PM
32 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.75 µg/m³
  • PM10: 8.04 µg/m³
  • O3: 0.023 ppm
  • NO2: 2.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

9 PM
33 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.95 µg/m³
  • PM10: 8.32 µg/m³
  • O3: 0.016 ppm
  • NO2: 2.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

10 PM
34 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.16 µg/m³
  • PM10: 8.59 µg/m³
  • O3: 0.012 ppm
  • NO2: 3.1 ppb
  • SO2: 0.1 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: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.23 µg/m³
  • PM10: 8.69 µg/m³
  • O3: 0.009 ppm
  • NO2: 3.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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