Hourly Weather | Today | Monday, August 25, 2025
Fontana, California
7 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
90°
Feels Like 86°
29
Humidity: 34%
Wind: 9 mph
UV Index: 5
8 PM
Cloudy NightCloudy night, overcast skies at night with no rain.
84°
Feels Like 82°
0
Humidity: 43%
Wind: 8 mph
UV Index: 0
9 PM
Cloudy NightCloudy night, overcast skies at night with no rain.
82°
Feels Like 81°
0
Humidity: 48%
Wind: 7 mph
UV Index: 0
10 PM
Cloudy NightCloudy night, overcast skies at night with no rain.
79°
Feels Like 79°
0
Humidity: 53%
Wind: 6 mph
UV Index: 0
11 PM
Cloudy NightCloudy night, overcast skies at night with no rain.
77°
Feels Like 75°
0
Humidity: 57%
Wind: 5 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

7 PM
108 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 14.79 µg/m³
  • PM10: 16.43 µg/m³
  • O₃: 62.25 ppb
  • NO₂: 6.42 ppb
  • SO₂: 2.72 ppb
  • CO: 152.98 ppb

Health Recommendations:

Air quality may be unhealthy for sensitive groups. The general public is not likely to be affected.

8 PM
105 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 15.66 µg/m³
  • PM10: 17.11 µg/m³
  • O₃: 56.02 ppb
  • NO₂: 8.15 ppb
  • SO₂: 3.04 ppb
  • CO: 162.29 ppb

Health Recommendations:

Air quality may be unhealthy for sensitive groups. The general public is not likely to be affected.

9 PM
95 AQI
Moderate air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 16.42 µg/m³
  • PM10: 17.75 µg/m³
  • O₃: 49.40 ppb
  • NO₂: 9.68 ppb
  • SO₂: 3.24 ppb
  • CO: 173.93 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

10 PM
79 AQI
Moderate air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 17.08 µg/m³
  • PM10: 18.37 µg/m³
  • O₃: 42.78 ppb
  • NO₂: 11.22 ppb
  • SO₂: 3.44 ppb
  • CO: 185.58 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

11 PM
61 AQI
Moderate air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 17.88 µg/m³
  • PM10: 19.15 µg/m³
  • O₃: 36.16 ppb
  • NO₂: 12.75 ppb
  • SO₂: 3.64 ppb
  • CO: 197.22 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.