Hourly Weather | Today Sunday, October 12, 2025
Rancho Cucamonga, California
12 PM
Sunny Weather
73°
Feels Like 79°
0
Humidity: 33%
Wind: 6 mph
UV Index: 45
1 PM
Sunny Weather
77°
Feels Like 81°
0
Humidity: 29%
Wind: 6 mph
UV Index: 48
2 PM
Sunny Weather
79°
Feels Like 82°
0
Humidity: 25%
Wind: 7 mph
UV Index: 45
3 PM
Sunny Weather
81°
Feels Like 82°
0
Humidity: 25%
Wind: 8 mph
UV Index: 37
4 PM
Sunny Weather
79°
Feels Like 79°
0
Humidity: 27%
Wind: 9 mph
UV Index: 25
5 PM
Sunny Weather
77°
Feels Like 75°
0
Humidity: 30%
Wind: 9 mph
UV Index: 16
6 PM
Sunny Weather
73°
Feels Like 72°
0
Humidity: 35%
Wind: 9 mph
UV Index: 6
7 PM
Night
72°
Feels Like 68°
0
Humidity: 40%
Wind: 9 mph
UV Index: 0
8 PM
Cloudy Night
68°
Feels Like 64°
0
Humidity: 47%
Wind: 7 mph
UV Index: 0
9 PM
Cloudy Night
64°
Feels Like 63°
0
Humidity: 52%
Wind: 7 mph
UV Index: 0
10 PM
Cloudy Night
63°
Feels Like 61°
0
Humidity: 57%
Wind: 6 mph
UV Index: 0
11 PM
Cloudy Night
59°
Feels Like 57°
0
Humidity: 64%
Wind: 6 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 11.58 µg/m³
  • PM10: 26.7 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.6 ppb
  • SO2: 0.8 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

1 PM
56 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.74 µg/m³
  • PM10: 29.67 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.6 ppb
  • SO2: 0.9 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

2 PM
63 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 17.65 µg/m³
  • PM10: 31.96 µg/m³
  • O3: 0.058 ppm
  • NO2: 0.6 ppb
  • SO2: 0.9 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 18.39 µg/m³
  • PM10: 31.33 µg/m³
  • O3: 0.060 ppm
  • NO2: 0.6 ppb
  • SO2: 0.9 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 15.84 µg/m³
  • PM10: 27.12 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.6 ppb
  • SO2: 0.7 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.65 µg/m³
  • PM10: 21.18 µg/m³
  • O3: 0.056 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.

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

Pollutant Concentrations:

  • PM2.5: 7.97 µg/m³
  • PM10: 15.63 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.04 µg/m³
  • PM10: 12.96 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.29 µg/m³
  • PM10: 12.37 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.14 µg/m³
  • PM10: 12.86 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.3 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
43 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.2 µg/m³
  • PM10: 13.87 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.29 µg/m³
  • PM10: 15.19 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.09 ppm

Health Recommendations:

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