Hourly Weather | Today Wednesday, August 12, 2026
Janesville, Wisconsin
8 AM
Foggy Weather
70°
Feels Like 73°
19
Humidity: 100%
UV Index: 1
Wind: 5 mph
9 AM
Foggy Weather
72°
Feels Like 77°
19
Humidity: 99%
UV Index: 1
Wind: 5 mph
10 AM
Foggy Weather
73°
Feels Like 81°
24
Humidity: 98%
UV Index: 2
Wind: 6 mph
11 AM
Sunny with a Chance of Thunderstorms
75°
Feels Like 82°
51
Humidity: 91%
UV Index: 2
Wind: 7 mph
12 PM
Foggy Weather
79°
Feels Like 90°
47
Humidity: 85%
UV Index: 3
Wind: 7 mph
1 PM
Foggy Weather
81°
Feels Like 91°
43
Humidity: 83%
UV Index: 4
Wind: 7 mph
2 PM
Cloudy Weather
81°
Feels Like 93°
43
Humidity: 78%
UV Index: 4
Wind: 7 mph
3 PM
Cloudy Weather
82°
Feels Like 93°
47
Humidity: 73%
UV Index: 4
Wind: 7 mph
4 PM
Sunny with a Chance of Thunderstorms
82°
Feels Like 88°
51
Humidity: 72%
UV Index: 2
Wind: 6 mph
5 PM
Cloudy Weather
84°
Feels Like 93°
40
Humidity: 67%
UV Index: 3
Wind: 6 mph
6 PM
Cloudy Weather
82°
Feels Like 90°
34
Humidity: 75%
UV Index: 2
Wind: 6 mph
7 PM
Cloudy Weather
81°
Feels Like 88°
25
Humidity: 79%
UV Index: 1
Wind: 7 mph
8 PM
Cloudy Weather
79°
Feels Like 84°
9
Humidity: 85%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
75°
Feels Like 81°
9
Humidity: 90%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Night
72°
Feels Like 79°
9
Humidity: 96%
UV Index: 0
Wind: 4 mph
11 PM
Cloudy Night
72°
Feels Like 75°
9
Humidity: 99%
UV Index: 0
Wind: 4 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 8.83 µg/m³
  • PM10: 9.08 µg/m³
  • O3: 0.016 ppm
  • NO2: 1.7 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 AM
36 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.58 µg/m³
  • PM10: 8.86 µg/m³
  • O3: 0.014 ppm
  • NO2: 1.8 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 AM
35 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.36 µg/m³
  • PM10: 8.66 µg/m³
  • O3: 0.013 ppm
  • NO2: 1.7 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 AM
33 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.81 µg/m³
  • PM10: 8.1 µg/m³
  • O3: 0.024 ppm
  • NO2: 1.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.25 µg/m³
  • PM10: 7.52 µg/m³
  • O3: 0.027 ppm
  • NO2: 1.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.86 µg/m³
  • PM10: 7.1 µg/m³
  • O3: 0.029 ppm
  • NO2: 0.8 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
29 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.4 µg/m³
  • PM10: 6.61 µg/m³
  • O3: 0.031 ppm
  • NO2: 0.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.01 µg/m³
  • PM10: 6.2 µg/m³
  • O3: 0.032 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.

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

Pollutant Concentrations:

  • PM2.5: 5.81 µg/m³
  • PM10: 5.98 µg/m³
  • O3: 0.032 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.

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

Pollutant Concentrations:

  • PM2.5: 5.8 µg/m³
  • PM10: 5.98 µg/m³
  • O3: 0.032 ppm
  • NO2: 0.9 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
28 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.93 µg/m³
  • PM10: 6.12 µg/m³
  • O3: 0.030 ppm
  • NO2: 1.2 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
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.98 µg/m³
  • PM10: 6.18 µg/m³
  • O3: 0.028 ppm
  • NO2: 1.5 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
25 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.05 µg/m³
  • PM10: 6.3 µg/m³
  • O3: 0.021 ppm
  • NO2: 2.3 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
26 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.24 µg/m³
  • PM10: 6.56 µg/m³
  • O3: 0.013 ppm
  • NO2: 2.9 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
27 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.46 µg/m³
  • PM10: 6.85 µg/m³
  • O3: 0.009 ppm
  • NO2: 3.2 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
27 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.52 µg/m³
  • PM10: 6.94 µg/m³
  • O3: 0.006 ppm
  • NO2: 3.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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