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Today Hourly 7 days 30 days Air Quality
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Hourly Weather | Today | Monday, September 1, 2025
Heat Advisory (Issued when high temperatures and humidity create conditions that may be hazardous during outdoor activity or prolonged exposure.)
Rancho Cucamonga, California
11 AM
Sunny WeatherSunny weather, clear skies and sunny weather.
91°
Feels Like 97°
0
Humidity: 32%
Wind: 5 mph
UV Index: 55
12 PM
Sunny WeatherSunny weather, clear skies and sunny weather.
95°
Feels Like 100°
0
Humidity: 27%
Wind: 6 mph
UV Index: 77
1 PM
Sunny WeatherSunny weather, clear skies and sunny weather.
99°
Feels Like 102°
0
Humidity: 24%
Wind: 8 mph
UV Index: 86
2 PM
Sunny WeatherSunny weather, clear skies and sunny weather.
100°
Feels Like 102°
0
Humidity: 22%
Wind: 9 mph
UV Index: 77
3 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
100°
Feels Like 102°
0
Humidity: 21%
Wind: 12 mph
UV Index: 55
4 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
99°
Feels Like 99°
0
Humidity: 23%
Wind: 13 mph
UV Index: 39
5 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
97°
Feels Like 97°
0
Humidity: 25%
Wind: 12 mph
UV Index: 25
6 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
95°
Feels Like 93°
0
Humidity: 27%
Wind: 10 mph
UV Index: 14
7 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
91°
Feels Like 90°
0
Humidity: 31%
Wind: 9 mph
UV Index: 4
8 PM
Cloudy NightCloudy night, overcast skies at night with no rain.
90°
Feels Like 86°
0
Humidity: 36%
Wind: 8 mph
UV Index: 0
9 PM
Cloudy NightCloudy night, overcast skies at night with no rain.
86°
Feels Like 82°
0
Humidity: 41%
Wind: 7 mph
UV Index: 0
10 PM
Cloudy NightCloudy night, overcast skies at night with no rain.
82°
Feels Like 81°
0
Humidity: 46%
Wind: 5 mph
UV Index: 0
11 PM
Cloudy NightCloudy night, overcast skies at night with no rain.
81°
Feels Like 79°
0
Humidity: 51%
Wind: 4 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

11 AM
52 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 13.19 µg/m³
  • PM10: 22.41 µg/m³
  • O₃: 35.01 ppb
  • NO₂: 16.58 ppb
  • SO₂: 2.22 ppb
  • CO: 290.76 ppb

Health Recommendations:

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

12 PM
52 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 13.46 µg/m³
  • PM10: 19.78 µg/m³
  • O₃: 47.58 ppb
  • NO₂: 13.85 ppb
  • SO₂: 2.86 ppb
  • CO: 252.29 ppb

Health Recommendations:

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

1 PM
52 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 14.22 µg/m³
  • PM10: 19.14 µg/m³
  • O₃: 57.85 ppb
  • NO₂: 12.02 ppb
  • SO₂: 3.19 ppb
  • CO: 230.72 ppb

Health Recommendations:

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

2 PM
53 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 15.06 µg/m³
  • PM10: 19.15 µg/m³
  • O₃: 67.19 ppb
  • NO₂: 10.55 ppb
  • SO₂: 3.41 ppb
  • CO: 215.91 ppb

Health Recommendations:

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

3 PM
53 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 15.63 µg/m³
  • PM10: 19.12 µg/m³
  • O₃: 68.20 ppb
  • NO₂: 10.03 ppb
  • SO₂: 3.67 ppb
  • CO: 203.41 ppb

Health Recommendations:

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

4 PM
53 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 16.12 µg/m³
  • PM10: 16.96 µg/m³
  • O₃: 77.72 ppb
  • NO₂: 7.45 ppb
  • SO₂: 4.49 ppb
  • CO: 158.78 ppb

Health Recommendations:

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

5 PM
56 AQI
Moderate air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 15.74 µg/m³
  • PM10: 16.62 µg/m³
  • O₃: 76.23 ppb
  • NO₂: 7.44 ppb
  • SO₂: 4.65 ppb
  • CO: 152.82 ppb

Health Recommendations:

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

6 PM
74 AQI
Moderate air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 16.44 µg/m³
  • PM10: 17.31 µg/m³
  • O₃: 66.98 ppb
  • NO₂: 9.88 ppb
  • SO₂: 4.88 ppb
  • CO: 160.77 ppb

Health Recommendations:

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

7 PM
83 AQI
Moderate air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 16.64 µg/m³
  • PM10: 17.49 µg/m³
  • O₃: 57.73 ppb
  • NO₂: 12.32 ppb
  • SO₂: 5.11 ppb
  • CO: 168.71 ppb

Health Recommendations:

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

8 PM
83 AQI
Moderate air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 16.72 µg/m³
  • PM10: 17.50 µg/m³
  • O₃: 48.48 ppb
  • NO₂: 14.76 ppb
  • SO₂: 5.34 ppb
  • CO: 176.65 ppb

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 16.60 µg/m³
  • PM10: 17.42 µg/m³
  • O₃: 39.83 ppb
  • NO₂: 16.91 ppb
  • SO₂: 5.37 ppb
  • CO: 185.70 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
61 AQI
Moderate air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 16.93 µg/m³
  • PM10: 17.68 µg/m³
  • O₃: 31.18 ppb
  • NO₂: 19.05 ppb
  • SO₂: 5.40 ppb
  • CO: 194.76 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
57 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 17.66 µg/m³
  • PM10: 18.51 µg/m³
  • O₃: 22.54 ppb
  • NO₂: 21.20 ppb
  • SO₂: 5.43 ppb
  • CO: 203.81 ppb

Health Recommendations:

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

Current Real-Time Air Quality Report