Hourly Weather | Today › Friday, October 9, 2026
Fontana, California
3 PM
Cloudy Weather
93°
Feels Like 95°
0
Humidity: 22%
UV Index: 4
Wind: 10 mph
4 PM
Cloudy Weather
93°
Feels Like 91°
0
Humidity: 23%
UV Index: 3
Wind: 10 mph
5 PM
Cloudy Weather
90°
Feels Like 88°
0
Humidity: 25%
UV Index: 2
Wind: 10 mph
6 PM
Cloudy Weather
86°
Feels Like 84°
0
Humidity: 29%
UV Index: 1
Wind: 9 mph
7 PM
Cloudy Night
82°
Feels Like 81°
0
Humidity: 35%
UV Index: 0
Wind: 8 mph
8 PM
Cloudy Night
82°
Feels Like 79°
0
Humidity: 40%
UV Index: 0
Wind: 7 mph
9 PM
Cloudy Night
79°
Feels Like 75°
0
Humidity: 46%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
77°
Feels Like 73°
0
Humidity: 51%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
75°
Feels Like 72°
0
Humidity: 56%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 14.89 µg/m³
  • PM10: 29.82 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.5 ppb
  • SO2: 0.5 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 14.17 µg/m³
  • PM10: 28.56 µg/m³
  • O3: 0.058 ppm
  • NO2: 0.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 13.22 µg/m³
  • PM10: 26.99 µg/m³
  • O3: 0.056 ppm
  • NO2: 0.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

6 PM
51 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.33 µg/m³
  • PM10: 25.53 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

7 PM
48 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.52 µg/m³
  • PM10: 24.3 µg/m³
  • O3: 0.052 ppm
  • NO2: 0.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 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: 10.8 µg/m³
  • PM10: 23.27 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 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: 10.21 µg/m³
  • PM10: 22.43 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 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: 9.79 µg/m³
  • PM10: 21.84 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.9 ppb
  • SO2: 0.5 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.47 µg/m³
  • PM10: 21.5 µg/m³
  • O3: 0.050 ppm
  • NO2: 1 ppb
  • SO2: 0.5 ppb
  • CO: 0.11 ppm

Health Recommendations:

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