Hourly Weather | Today Wednesday, May 20, 2026
St. George, Utah
6 PM
Cloudy Weather
84°
Feels Like 84°
0
Humidity: 8%
UV Index: 2
Wind: 8 mph
7 PM
Cloudy Weather
82°
Feels Like 81°
0
Humidity: 8%
UV Index: 1
Wind: 8 mph
8 PM
Cloudy Weather
81°
Feels Like 79°
0
Humidity: 9%
UV Index: 0
Wind: 7 mph
9 PM
Cloudy Night
79°
Feels Like 75°
0
Humidity: 10%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Night
75°
Feels Like 72°
0
Humidity: 12%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Night
72°
Feels Like 70°
0
Humidity: 14%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

6 PM
87 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.86 µg/m³
  • PM10: 5.31 µg/m³
  • O3: 0.066 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

7 PM
84 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.96 µg/m³
  • PM10: 5.91 µg/m³
  • O3: 0.065 ppm
  • NO2: 0.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

8 PM
78 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.04 µg/m³
  • PM10: 6.46 µg/m³
  • O3: 0.063 ppm
  • NO2: 0.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

9 PM
74 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.12 µg/m³
  • PM10: 7.06 µg/m³
  • O3: 0.062 ppm
  • NO2: 1.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

10 PM
73 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.2 µg/m³
  • PM10: 7.63 µg/m³
  • O3: 0.061 ppm
  • NO2: 1.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

11 PM
75 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.31 µg/m³
  • PM10: 8.17 µg/m³
  • O3: 0.062 ppm
  • NO2: 1.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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