Hourly Weather | Today Friday, October 10, 2025
Rialto, California
11 AM
Cloudy Weather
81°
Feels Like 86°
7
Humidity: 53%
Wind: 5 mph
UV Index: 38
12 PM
Cloudy Weather
84°
Feels Like 90°
7
Humidity: 48%
Wind: 6 mph
UV Index: 46
1 PM
Cloudy Weather
86°
Feels Like 91°
5
Humidity: 44%
Wind: 6 mph
UV Index: 49
2 PM
Cloudy Weather
88°
Feels Like 91°
0
Humidity: 42%
Wind: 7 mph
UV Index: 46
3 PM
Cloudy Weather
88°
Feels Like 91°
0
Humidity: 39%
Wind: 7 mph
UV Index: 38
4 PM
Cloudy Weather
88°
Feels Like 88°
0
Humidity: 40%
Wind: 8 mph
UV Index: 26
5 PM
Cloudy Weather
86°
Feels Like 84°
0
Humidity: 42%
Wind: 8 mph
UV Index: 17
6 PM
Cloudy Weather
82°
Feels Like 82°
0
Humidity: 45%
Wind: 8 mph
UV Index: 7
7 PM
Cloudy Night
81°
Feels Like 79°
0
Humidity: 49%
Wind: 7 mph
UV Index: 0
8 PM
Cloudy Night
82°
Feels Like 79°
0
Humidity: 45%
Wind: 7 mph
UV Index: 0
9 PM
Cloudy Night
79°
Feels Like 77°
0
Humidity: 48%
Wind: 6 mph
UV Index: 0
10 PM
Cloudy Night
79°
Feels Like 75°
0
Humidity: 49%
Wind: 5 mph
UV Index: 0
11 PM
Cloudy Night
75°
Feels Like 73°
0
Humidity: 52%
Wind: 4 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

11 AM
41 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.9 µg/m³
  • PM10: 12.87 µg/m³
  • O3: 0.044 ppm
  • NO2: 3.3 ppb
  • SO2: 0.8 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

12 PM
45 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.24 µg/m³
  • PM10: 13.5 µg/m³
  • O3: 0.049 ppm
  • NO2: 2.5 ppb
  • SO2: 0.8 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

1 PM
49 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.71 µg/m³
  • PM10: 14.07 µg/m³
  • O3: 0.053 ppm
  • NO2: 1.6 ppb
  • SO2: 0.7 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.26 µg/m³
  • PM10: 14.89 µg/m³
  • O3: 0.057 ppm
  • NO2: 1 ppb
  • SO2: 0.6 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.

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

Pollutant Concentrations:

  • PM2.5: 7.46 µg/m³
  • PM10: 15.59 µg/m³
  • O3: 0.058 ppm
  • NO2: 0.8 ppb
  • SO2: 0.6 ppb
  • CO: 0.10 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: 7.26 µg/m³
  • PM10: 15.93 µg/m³
  • O3: 0.057 ppm
  • NO2: 0.8 ppb
  • SO2: 0.5 ppb
  • CO: 0.10 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: 6.96 µg/m³
  • PM10: 16.22 µg/m³
  • O3: 0.056 ppm
  • NO2: 0.9 ppb
  • SO2: 0.5 ppb
  • CO: 0.10 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: 6.75 µg/m³
  • PM10: 16.45 µg/m³
  • O3: 0.054 ppm
  • NO2: 1.3 ppb
  • SO2: 0.5 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: 6.52 µg/m³
  • PM10: 16.51 µg/m³
  • O3: 0.051 ppm
  • NO2: 1.6 ppb
  • SO2: 0.5 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: 6.18 µg/m³
  • PM10: 16.44 µg/m³
  • O3: 0.049 ppm
  • NO2: 1.7 ppb
  • SO2: 0.5 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: 5.89 µg/m³
  • PM10: 16.4 µg/m³
  • O3: 0.048 ppm
  • NO2: 1.8 ppb
  • SO2: 0.5 ppb
  • CO: 0.10 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: 5.63 µg/m³
  • PM10: 16.48 µg/m³
  • O3: 0.046 ppm
  • NO2: 1.9 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
42 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.34 µg/m³
  • PM10: 16.53 µg/m³
  • O3: 0.045 ppm
  • NO2: 1.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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