Hourly Weather | Today Wednesday, March 18, 2026
St. Clair Shores, Michigan
6 AM
Cloudy Night
21°
Feels Like 14°
0
Frost Risk: 58%
Humidity: 59%
UV Index: 0
Wind: 8 mph
7 AM
Cloudy Weather
23°
Feels Like 14°
1
Humidity: 58%
UV Index: 0
Wind: 9 mph
8 AM
Cloudy Weather
21°
Feels Like 10°
5
Frost Risk: 44%
Humidity: 62%
UV Index: 0
Wind: 9 mph
9 AM
Cloudy Weather
23°
Feels Like 12°
5
Humidity: 58%
UV Index: 1
Wind: 12 mph
10 AM
Cloudy Weather
25°
Feels Like 12°
5
Humidity: 55%
UV Index: 1
Wind: 13 mph
11 AM
Cloudy Weather
27°
Feels Like 14°
5
Humidity: 53%
UV Index: 1
Wind: 14 mph
12 PM
Cloudy Weather
28°
Feels Like 16°
5
Humidity: 51%
UV Index: 1
Wind: 15 mph
1 PM
Cloudy Weather
30°
Feels Like 18°
8
Humidity: 50%
UV Index: 1
Wind: 16 mph
2 PM
Cloudy Weather
32°
Feels Like 18°
37
Humidity: 49%
UV Index: 1
Wind: 17 mph
3 PM
Cloudy Weather
34°
Feels Like 19°
44
Humidity: 51%
UV Index: 1
Wind: 17 mph
4 PM
Snowy Weather
34°
Feels Like 19°
51
Humidity: 54%
UV Index: 1
Wind: 17 mph
5 PM
Cloudy Weather
34°
Feels Like 19°
38
Humidity: 58%
UV Index: 0
Wind: 16 mph
6 PM
Snowy Weather
36°
Feels Like 21°
51
Humidity: 58%
UV Index: 0
Wind: 15 mph
7 PM
Cloudy Weather
36°
Feels Like 23°
44
Humidity: 65%
UV Index: 0
Wind: 14 mph
8 PM
Cloudy Weather
34°
Feels Like 25°
20
Humidity: 72%
UV Index: 0
Wind: 10 mph
9 PM
Cloudy Weather
34°
Feels Like 25°
20
Humidity: 77%
UV Index: 0
Wind: 10 mph
10 PM
Cloudy Weather
34°
Feels Like 25°
20
Humidity: 81%
UV Index: 0
Wind: 10 mph
11 PM
Cloudy Weather
34°
Feels Like 27°
20
Humidity: 83%
UV Index: 0
Wind: 9 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 5.13 µg/m³
  • PM10: 6.9 µg/m³
  • O3: 0.048 ppm
  • NO2: 2.2 ppb
  • SO2: 1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.52 µg/m³
  • PM10: 6.36 µg/m³
  • O3: 0.047 ppm
  • NO2: 2.2 ppb
  • SO2: 0.8 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.46 µg/m³
  • PM10: 5.16 µg/m³
  • O3: 0.046 ppm
  • NO2: 2.1 ppb
  • SO2: 0.6 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.91 µg/m³
  • PM10: 3.01 µg/m³
  • O3: 0.048 ppm
  • NO2: 1.9 ppb
  • SO2: 0.5 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: 1.3 µg/m³
  • PM10: 2.12 µg/m³
  • O3: 0.048 ppm
  • NO2: 2.1 ppb
  • SO2: 0.6 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.12 µg/m³
  • PM10: 1.81 µg/m³
  • O3: 0.048 ppm
  • NO2: 2.1 ppb
  • SO2: 0.8 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: 1.06 µg/m³
  • PM10: 1.62 µg/m³
  • O3: 0.049 ppm
  • NO2: 2.2 ppb
  • SO2: 0.9 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: 1.18 µg/m³
  • PM10: 1.69 µg/m³
  • O3: 0.050 ppm
  • NO2: 2.1 ppb
  • SO2: 0.9 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.4 µg/m³
  • PM10: 1.87 µg/m³
  • O3: 0.052 ppm
  • NO2: 2 ppb
  • SO2: 0.8 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.63 µg/m³
  • PM10: 2.14 µg/m³
  • O3: 0.053 ppm
  • NO2: 2.1 ppb
  • SO2: 0.8 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.83 µg/m³
  • PM10: 2.42 µg/m³
  • O3: 0.054 ppm
  • NO2: 2.2 ppb
  • SO2: 0.8 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.03 µg/m³
  • PM10: 2.71 µg/m³
  • O3: 0.053 ppm
  • NO2: 2.3 ppb
  • SO2: 0.9 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.23 µg/m³
  • PM10: 3.04 µg/m³
  • O3: 0.053 ppm
  • NO2: 2.6 ppb
  • SO2: 1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.4 µg/m³
  • PM10: 3.36 µg/m³
  • O3: 0.053 ppm
  • NO2: 2.9 ppb
  • SO2: 1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.55 µg/m³
  • PM10: 3.63 µg/m³
  • O3: 0.052 ppm
  • NO2: 3 ppb
  • SO2: 1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.67 µg/m³
  • PM10: 3.87 µg/m³
  • O3: 0.052 ppm
  • NO2: 2.9 ppb
  • SO2: 0.9 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.87 µg/m³
  • PM10: 4.18 µg/m³
  • O3: 0.051 ppm
  • NO2: 2.9 ppb
  • SO2: 0.8 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.24 µg/m³
  • PM10: 4.64 µg/m³
  • O3: 0.050 ppm
  • NO2: 2.9 ppb
  • SO2: 0.8 ppb
  • CO: 0.15 ppm

Health Recommendations:

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