Hourly Weather | Today Saturday, September 5, 2026
Fontana, California
5 PM
Cloudy Weather
93°
Feels Like 91°
0
Humidity: 19%
UV Index: 2
Wind: 12 mph
6 PM
Cloudy Weather
91°
Feels Like 90°
0
Humidity: 21%
UV Index: 1
Wind: 10 mph
7 PM
Cloudy Weather
88°
Feels Like 84°
0
Humidity: 23%
UV Index: 0
Wind: 9 mph
8 PM
Cloudy Night
84°
Feels Like 82°
5
Humidity: 24%
UV Index: 0
Wind: 8 mph
9 PM
Cloudy Night
82°
Feels Like 79°
5
Humidity: 27%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
79°
Feels Like 77°
6
Humidity: 31%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
77°
Feels Like 75°
7
Humidity: 34%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 4.97 µg/m³
  • PM10: 9.69 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.56 µg/m³
  • PM10: 9.09 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.34 µg/m³
  • PM10: 8.82 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.31 µg/m³
  • PM10: 8.92 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.42 µg/m³
  • PM10: 9.34 µg/m³
  • O3: 0.041 ppm
  • NO2: 1.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.53 µg/m³
  • PM10: 9.63 µg/m³
  • O3: 0.041 ppm
  • NO2: 1.3 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.56 µg/m³
  • PM10: 9.64 µg/m³
  • O3: 0.041 ppm
  • NO2: 1.6 ppb
  • SO2: 0.5 ppb
  • CO: 0.13 ppm

Health Recommendations:

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