Hourly Weather | Today Wednesday, May 20, 2026
Salt Lake City, Utah
3 PM
Cloudy Weather
72°
Feels Like 75°
0
Humidity: 16%
UV Index: 7
Wind: 10 mph
4 PM
Cloudy Weather
70°
Feels Like 73°
0
Humidity: 16%
UV Index: 5
Wind: 9 mph
5 PM
Cloudy Weather
70°
Feels Like 72°
0
Humidity: 16%
UV Index: 3
Wind: 9 mph
6 PM
Cloudy Weather
70°
Feels Like 70°
0
Humidity: 16%
UV Index: 2
Wind: 9 mph
7 PM
Cloudy Weather
70°
Feels Like 66°
0
Humidity: 17%
UV Index: 1
Wind: 8 mph
8 PM
Cloudy Weather
66°
Feels Like 63°
0
Humidity: 19%
UV Index: 0
Wind: 8 mph
9 PM
Cloudy Night
63°
Feels Like 61°
0
Humidity: 23%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Night
61°
Feels Like 57°
0
Humidity: 27%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Night
59°
Feels Like 55°
0
Humidity: 30%
UV Index: 0
Wind: 8 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 1.58 µg/m³
  • PM10: 4.02 µg/m³
  • O3: 0.057 ppm
  • NO2: 0.2 ppb
  • SO2: 0.7 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.

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

Pollutant Concentrations:

  • PM2.5: 1.46 µg/m³
  • PM10: 4.14 µg/m³
  • O3: 0.056 ppm
  • NO2: 0.2 ppb
  • SO2: 0.6 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.

5 PM
55 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.36 µg/m³
  • PM10: 4.25 µg/m³
  • O3: 0.056 ppm
  • NO2: 0.2 ppb
  • SO2: 0.5 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.

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

Pollutant Concentrations:

  • PM2.5: 1.26 µg/m³
  • PM10: 4.31 µg/m³
  • O3: 0.055 ppm
  • NO2: 0.3 ppb
  • SO2: 0.5 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
50 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.21 µg/m³
  • PM10: 4.47 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.2 µg/m³
  • PM10: 4.7 µg/m³
  • O3: 0.052 ppm
  • NO2: 0.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.21 µg/m³
  • PM10: 4.93 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.25 µg/m³
  • PM10: 5 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.9 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 PM
41 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.33 µg/m³
  • PM10: 5.12 µg/m³
  • O3: 0.044 ppm
  • NO2: 1.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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