Hourly Weather | Today Wednesday, March 18, 2026
Eau Claire, Wisconsin
9 AM
Cloudy Weather
23°
Feels Like 18°
0
Frost Risk: 97%
Humidity: 84%
UV Index: 0
Wind: 8 mph
10 AM
Cloudy Weather
25°
Feels Like 19°
0
Humidity: 82%
UV Index: 1
Wind: 8 mph
11 AM
Cloudy Weather
28°
Feels Like 25°
0
Humidity: 79%
UV Index: 1
Wind: 8 mph
12 PM
Cloudy Weather
30°
Feels Like 27°
0
Humidity: 76%
UV Index: 2
Wind: 8 mph
1 PM
Cloudy Weather
34°
Feels Like 30°
1
Humidity: 73%
UV Index: 2
Wind: 8 mph
2 PM
Cloudy Weather
36°
Feels Like 32°
5
Humidity: 69%
UV Index: 2
Wind: 8 mph
3 PM
Cloudy Weather
36°
Feels Like 34°
5
Humidity: 67%
UV Index: 1
Wind: 7 mph
4 PM
Cloudy Weather
37°
Feels Like 36°
6
Humidity: 65%
UV Index: 1
Wind: 7 mph
5 PM
Cloudy Weather
39°
Feels Like 36°
7
Humidity: 64%
UV Index: 0
Wind: 6 mph
6 PM
Cloudy Weather
37°
Feels Like 36°
7
Humidity: 71%
UV Index: 0
Wind: 6 mph
7 PM
Cloudy Weather
37°
Feels Like 36°
11
Humidity: 77%
UV Index: 0
Wind: 5 mph
8 PM
Cloudy Weather
36°
Feels Like 36°
19
Humidity: 78%
UV Index: 0
Wind: 5 mph
9 PM
Cloudy Weather
36°
Feels Like 36°
19
Humidity: 80%
UV Index: 0
Wind: 4 mph
10 PM
Cloudy Weather
36°
Feels Like 36°
24
Humidity: 81%
UV Index: 0
Wind: 4 mph
11 PM
Cloudy Weather
36°
Feels Like 36°
49
Humidity: 79%
UV Index: 0
Wind: 4 mph

Hourly Air Quality Forecast - AQI (US EPA)

9 AM
44 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.57 µg/m³
  • PM10: 5.13 µg/m³
  • O3: 0.047 ppm
  • NO2: 1.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5 µg/m³
  • PM10: 5.66 µg/m³
  • O3: 0.046 ppm
  • NO2: 1.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.01 µg/m³
  • PM10: 6.77 µg/m³
  • O3: 0.046 ppm
  • NO2: 1.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.02 µg/m³
  • PM10: 8.87 µg/m³
  • O3: 0.047 ppm
  • NO2: 1.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.24 µg/m³
  • PM10: 12.16 µg/m³
  • O3: 0.049 ppm
  • NO2: 1.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

2 PM
57 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.1 µg/m³
  • PM10: 16.1 µg/m³
  • O3: 0.054 ppm
  • NO2: 1 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

3 PM
63 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 18 µg/m³
  • PM10: 19.06 µg/m³
  • O3: 0.057 ppm
  • NO2: 0.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

4 PM
67 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 19.71 µg/m³
  • PM10: 20.8 µg/m³
  • O3: 0.060 ppm
  • NO2: 0.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM
69 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 20.75 µg/m³
  • PM10: 21.88 µg/m³
  • O3: 0.060 ppm
  • NO2: 1 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 PM
69 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 20.97 µg/m³
  • PM10: 22.16 µg/m³
  • O3: 0.057 ppm
  • NO2: 1.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

7 PM
69 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 20.73 µg/m³
  • PM10: 21.99 µg/m³
  • O3: 0.054 ppm
  • NO2: 2.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

8 PM
68 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 20.31 µg/m³
  • PM10: 21.6 µg/m³
  • O3: 0.050 ppm
  • NO2: 2.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

9 PM
67 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 19.86 µg/m³
  • PM10: 21.15 µg/m³
  • O3: 0.048 ppm
  • NO2: 3 ppb
  • SO2: 0.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

10 PM
66 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 19.45 µg/m³
  • PM10: 20.74 µg/m³
  • O3: 0.046 ppm
  • NO2: 2.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

11 PM
65 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 19.12 µg/m³
  • PM10: 20.41 µg/m³
  • O3: 0.045 ppm
  • NO2: 2.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.