Hourly Weather | Today Wednesday, August 12, 2026
St. George, Utah
7 AM
Cloudy Weather
79°
Feels Like 75°
37
Humidity: 52%
UV Index: 0
Wind: 6 mph
8 AM
Cloudy Weather
79°
Feels Like 79°
6
Humidity: 49%
UV Index: 1
Wind: 5 mph
9 AM
Cloudy Weather
81°
Feels Like 82°
6
Humidity: 48%
UV Index: 2
Wind: 5 mph
10 AM
Cloudy Weather
82°
Feels Like 84°
6
Humidity: 45%
UV Index: 3
Wind: 6 mph
11 AM
Cloudy Weather
84°
Feels Like 90°
6
Humidity: 43%
UV Index: 4
Wind: 6 mph
12 PM
Cloudy Weather
88°
Feels Like 93°
6
Humidity: 40%
UV Index: 6
Wind: 6 mph
1 PM
Cloudy Weather
90°
Feels Like 95°
9
Humidity: 37%
UV Index: 8
Wind: 7 mph
2 PM
Cloudy Weather
91°
Feels Like 97°
43
Humidity: 35%
UV Index: 8
Wind: 8 mph
3 PM
Cloudy Weather
93°
Feels Like 95°
47
Humidity: 32%
UV Index: 5
Wind: 9 mph
4 PM
Sunny with a Chance of Thunderstorms
90°
Feels Like 88°
51
Humidity: 36%
UV Index: 2
Wind: 9 mph
5 PM
Cloudy Weather
90°
Feels Like 90°
19
Humidity: 35%
UV Index: 2
Wind: 9 mph
6 PM
Cloudy Weather
90°
Feels Like 88°
15
Humidity: 37%
UV Index: 1
Wind: 9 mph
7 PM
Cloudy Weather
90°
Feels Like 88°
19
Humidity: 37%
UV Index: 1
Wind: 8 mph
8 PM
Stormy Weather
86°
Feels Like 81°
51
Humidity: 44%
UV Index: 0
Wind: 7 mph
9 PM
Cloudy Weather
84°
Feels Like 82°
47
Humidity: 47%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Weather
82°
Feels Like 81°
40
Humidity: 52%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Weather
81°
Feels Like 79°
34
Humidity: 57%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 4.54 µg/m³
  • PM10: 14.54 µg/m³
  • O3: 0.033 ppm
  • NO2: 0.7 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.42 µg/m³
  • PM10: 14.58 µg/m³
  • O3: 0.033 ppm
  • NO2: 0.7 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.55 µg/m³
  • PM10: 15.89 µg/m³
  • O3: 0.034 ppm
  • NO2: 0.7 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.91 µg/m³
  • PM10: 22.26 µg/m³
  • O3: 0.040 ppm
  • NO2: 0.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.53 µg/m³
  • PM10: 24.23 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.87 µg/m³
  • PM10: 25.15 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.78 µg/m³
  • PM10: 23.04 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.49 µg/m³
  • PM10: 20.26 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.35 µg/m³
  • PM10: 18.72 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.34 µg/m³
  • PM10: 17.69 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.27 µg/m³
  • PM10: 16.83 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.21 µg/m³
  • PM10: 16.32 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.18 µg/m³
  • PM10: 16.26 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.02 µg/m³
  • PM10: 15.91 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.61 µg/m³
  • PM10: 14.91 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.04 µg/m³
  • PM10: 13.5 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.62 µg/m³
  • PM10: 12.51 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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