Hourly Weather | Today Thursday, February 26, 2026
Waukesha, Wisconsin
1 AM
Night
32°
Feels Like 25°
0
Humidity: 81%
UV Index: 0
Wind: 9 mph
2 AM
Night
32°
Feels Like 25°
0
Humidity: 80%
UV Index: 0
Wind: 9 mph
3 AM
Night
30°
Feels Like 23°
0
Frost Risk: 82%
Humidity: 82%
UV Index: 0
Wind: 9 mph
4 AM
Night
30°
Feels Like 23°
0
Frost Risk: 80%
Humidity: 82%
UV Index: 0
Wind: 9 mph
5 AM
Night
30°
Feels Like 21°
0
Frost Risk: 66%
Humidity: 82%
UV Index: 0
Wind: 8 mph
6 AM
Night
30°
Feels Like 21°
0
Frost Risk: 63%
Humidity: 84%
UV Index: 0
Wind: 8 mph
7 AM
Cloudy Weather
30°
Feels Like 19°
0
Frost Risk: 42%
Humidity: 84%
UV Index: 0
Wind: 12 mph
8 AM
Cloudy Weather
32°
Feels Like 21°
0
Humidity: 82%
UV Index: 1
Wind: 13 mph
9 AM
Cloudy Weather
37°
Feels Like 28°
0
Humidity: 70%
UV Index: 2
Wind: 14 mph
10 AM
Cloudy Weather
43°
Feels Like 36°
0
Humidity: 58%
UV Index: 3
Wind: 14 mph
11 AM
Cloudy Weather
48°
Feels Like 45°
0
Humidity: 47%
UV Index: 3
Wind: 16 mph
12 PM
Cloudy Weather
52°
Feels Like 46°
0
Humidity: 43%
UV Index: 4
Wind: 17 mph
1 PM
Cloudy Weather
54°
Feels Like 52°
0
Humidity: 40%
UV Index: 3
Wind: 15 mph
2 PM
Cloudy Weather
57°
Feels Like 54°
0
Humidity: 37%
UV Index: 3
Wind: 16 mph
3 PM
Cloudy Weather
57°
Feels Like 52°
0
Humidity: 39%
UV Index: 2
Wind: 16 mph
4 PM
Cloudy Weather
55°
Feels Like 52°
0
Humidity: 40%
UV Index: 1
Wind: 15 mph
5 PM
Cloudy Weather
54°
Feels Like 46°
0
Humidity: 46%
UV Index: 0
Wind: 12 mph
6 PM
Cloudy Night
50°
Feels Like 45°
0
Humidity: 52%
UV Index: 0
Wind: 10 mph
7 PM
Cloudy Night
46°
Feels Like 37°
0
Humidity: 58%
UV Index: 0
Wind: 13 mph
8 PM
Cloudy Night
45°
Feels Like 34°
0
Humidity: 61%
UV Index: 0
Wind: 14 mph
9 PM
Cloudy Night
41°
Feels Like 30°
0
Humidity: 65%
UV Index: 0
Wind: 14 mph
10 PM
Cloudy Night
37°
Feels Like 27°
0
Humidity: 69%
UV Index: 0
Wind: 15 mph
11 PM
Cloudy Night
36°
Feels Like 25°
0
Humidity: 71%
UV Index: 0
Wind: 15 mph

Hourly Air Quality Forecast - AQI (US EPA)

1 AM
40 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.66 µg/m³
  • PM10: 4.19 µg/m³
  • O3: 0.043 ppm
  • NO2: 2.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

2 AM
39 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.86 µg/m³
  • PM10: 4.4 µg/m³
  • O3: 0.043 ppm
  • NO2: 2.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

3 AM
39 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.09 µg/m³
  • PM10: 4.65 µg/m³
  • O3: 0.042 ppm
  • NO2: 2 ppb
  • SO2: 0.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

4 AM
38 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.31 µg/m³
  • PM10: 4.91 µg/m³
  • O3: 0.041 ppm
  • NO2: 2.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

5 AM
38 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.49 µg/m³
  • PM10: 5.13 µg/m³
  • O3: 0.041 ppm
  • NO2: 2.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

6 AM
37 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.66 µg/m³
  • PM10: 5.35 µg/m³
  • O3: 0.040 ppm
  • NO2: 2.3 ppb
  • SO2: 0.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

7 AM
36 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.89 µg/m³
  • PM10: 5.71 µg/m³
  • O3: 0.039 ppm
  • NO2: 2.9 ppb
  • SO2: 0.6 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

8 AM
36 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.06 µg/m³
  • PM10: 5.99 µg/m³
  • O3: 0.039 ppm
  • NO2: 3.8 ppb
  • SO2: 0.7 ppb
  • CO: 0.17 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.14 µg/m³
  • PM10: 6.14 µg/m³
  • O3: 0.039 ppm
  • NO2: 4.7 ppb
  • SO2: 0.7 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.9 µg/m³
  • PM10: 5.94 µg/m³
  • O3: 0.039 ppm
  • NO2: 4.7 ppb
  • SO2: 0.8 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.36 µg/m³
  • PM10: 5.31 µg/m³
  • O3: 0.039 ppm
  • NO2: 4 ppb
  • SO2: 0.9 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

12 PM
37 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.94 µg/m³
  • PM10: 4.77 µg/m³
  • O3: 0.040 ppm
  • NO2: 3.4 ppb
  • SO2: 0.9 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

1 PM
41 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.53 µg/m³
  • PM10: 4.22 µg/m³
  • O3: 0.044 ppm
  • NO2: 2.9 ppb
  • SO2: 0.9 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.21 µg/m³
  • PM10: 3.81 µg/m³
  • O3: 0.044 ppm
  • NO2: 2.8 ppb
  • SO2: 0.9 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.66 µg/m³
  • PM10: 3.22 µg/m³
  • O3: 0.044 ppm
  • NO2: 2.8 ppb
  • SO2: 1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.28 µg/m³
  • PM10: 2.88 µg/m³
  • O3: 0.043 ppm
  • NO2: 3.4 ppb
  • SO2: 1.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.46 µg/m³
  • PM10: 3.16 µg/m³
  • O3: 0.040 ppm
  • NO2: 5.3 ppb
  • SO2: 0.9 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.96 µg/m³
  • PM10: 3.77 µg/m³
  • O3: 0.035 ppm
  • NO2: 7.5 ppb
  • SO2: 0.7 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.54 µg/m³
  • PM10: 4.46 µg/m³
  • O3: 0.032 ppm
  • NO2: 8.5 ppb
  • SO2: 0.5 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.08 µg/m³
  • PM10: 5.07 µg/m³
  • O3: 0.031 ppm
  • NO2: 8.5 ppb
  • SO2: 0.5 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.5 µg/m³
  • PM10: 5.5 µg/m³
  • O3: 0.032 ppm
  • NO2: 7.8 ppb
  • SO2: 0.5 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.93 µg/m³
  • PM10: 5.91 µg/m³
  • O3: 0.032 ppm
  • NO2: 7 ppb
  • SO2: 0.4 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.76 µg/m³
  • PM10: 6.73 µg/m³
  • O3: 0.030 ppm
  • NO2: 6.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.21 ppm

Health Recommendations:

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