Hourly Weather | Today Wednesday, March 18, 2026
Racine, Wisconsin
7 AM
Snowy Weather
25°
Feels Like
62
Frost Risk: 67%
Humidity: 86%
UV Index: 0
Wind: 16 mph
8 AM
Snowy Weather
27°
Feels Like 10°
65
Humidity: 81%
UV Index: 0
Wind: 15 mph
9 AM
Snowy Weather
27°
Feels Like 10°
65
Humidity: 83%
UV Index: 0
Wind: 16 mph
10 AM
Snowy Weather
28°
Feels Like 12°
65
Humidity: 82%
UV Index: 1
Wind: 16 mph
11 AM
Cloudy Weather
28°
Feels Like 18°
40
Humidity: 80%
UV Index: 1
Wind: 15 mph
12 PM
Cloudy Weather
30°
Feels Like 19°
34
Humidity: 77%
UV Index: 1
Wind: 14 mph
1 PM
Cloudy Weather
34°
Feels Like 23°
22
Humidity: 75%
UV Index: 1
Wind: 14 mph
2 PM
Cloudy Weather
34°
Feels Like 25°
0
Humidity: 75%
UV Index: 1
Wind: 13 mph
3 PM
Cloudy Weather
36°
Feels Like 27°
0
Humidity: 75%
UV Index: 1
Wind: 12 mph
4 PM
Cloudy Weather
36°
Feels Like 28°
0
Humidity: 76%
UV Index: 1
Wind: 12 mph
5 PM
Cloudy Weather
37°
Feels Like 30°
0
Humidity: 75%
UV Index: 1
Wind: 10 mph
6 PM
Cloudy Weather
36°
Feels Like 28°
0
Humidity: 81%
UV Index: 0
Wind: 9 mph
7 PM
Cloudy Weather
36°
Feels Like 28°
1
Humidity: 83%
UV Index: 0
Wind: 8 mph
8 PM
Cloudy Weather
34°
Feels Like 28°
5
Humidity: 87%
UV Index: 0
Wind: 7 mph
9 PM
Cloudy Weather
34°
Feels Like 28°
5
Humidity: 89%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Weather
34°
Feels Like 28°
5
Humidity: 90%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Weather
34°
Feels Like 28°
5
Humidity: 91%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 3.67 µg/m³
  • PM10: 3.88 µg/m³
  • O3: 0.050 ppm
  • NO2: 1.8 ppb
  • SO2: 0.8 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.82 µg/m³
  • PM10: 4.14 µg/m³
  • O3: 0.049 ppm
  • NO2: 2.2 ppb
  • SO2: 0.9 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.05 µg/m³
  • PM10: 4.53 µg/m³
  • O3: 0.048 ppm
  • NO2: 3 ppb
  • SO2: 1.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.35 µg/m³
  • PM10: 4.99 µg/m³
  • O3: 0.048 ppm
  • NO2: 3.3 ppb
  • SO2: 1.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.99 µg/m³
  • PM10: 5.8 µg/m³
  • O3: 0.048 ppm
  • NO2: 2.9 ppb
  • SO2: 1.5 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.23 µg/m³
  • PM10: 7.17 µg/m³
  • O3: 0.049 ppm
  • NO2: 2.5 ppb
  • SO2: 1.4 ppb
  • CO: 0.15 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.28 µg/m³
  • PM10: 9.29 µg/m³
  • O3: 0.051 ppm
  • NO2: 2.2 ppb
  • SO2: 1.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

2 PM
52 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 11.16 µg/m³
  • PM10: 12.22 µg/m³
  • O3: 0.055 ppm
  • NO2: 2 ppb
  • SO2: 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.

3 PM
57 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 13.77 µg/m³
  • PM10: 14.93 µg/m³
  • O3: 0.056 ppm
  • NO2: 2.4 ppb
  • SO2: 0.8 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
58 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.72 µg/m³
  • PM10: 16.99 µg/m³
  • O3: 0.057 ppm
  • NO2: 3 ppb
  • SO2: 0.7 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.

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

Pollutant Concentrations:

  • PM2.5: 17.78 µg/m³
  • PM10: 19.28 µg/m³
  • O3: 0.055 ppm
  • NO2: 4.6 ppb
  • SO2: 0.7 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 19.53 µg/m³
  • PM10: 21.37 µg/m³
  • O3: 0.050 ppm
  • NO2: 8.3 ppb
  • SO2: 0.6 ppb
  • CO: 0.22 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: 20.81 µg/m³
  • PM10: 23.01 µg/m³
  • O3: 0.042 ppm
  • NO2: 13 ppb
  • SO2: 0.5 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 22.08 µg/m³
  • PM10: 24.76 µg/m³
  • O3: 0.037 ppm
  • NO2: 14.9 ppb
  • SO2: 0.5 ppb
  • CO: 0.27 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 23.62 µg/m³
  • PM10: 26.68 µg/m³
  • O3: 0.034 ppm
  • NO2: 15 ppb
  • SO2: 0.5 ppb
  • CO: 0.28 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 25.16 µg/m³
  • PM10: 28.33 µg/m³
  • O3: 0.032 ppm
  • NO2: 14.3 ppb
  • SO2: 0.5 ppb
  • CO: 0.28 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 26.2 µg/m³
  • PM10: 29.34 µg/m³
  • O3: 0.030 ppm
  • NO2: 13.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.28 ppm

Health Recommendations:

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