Hourly Weather | Today Saturday, September 20, 2025
Rialto, California
4 AM
Night
66°
Feels Like 66°
0
Humidity: 84%
Wind: 4 mph
UV Index: 0
5 AM
Cloudy Night
66°
Feels Like 64°
0
Humidity: 84%
Wind: 4 mph
UV Index: 0
6 AM
Night
64°
Feels Like 64°
0
Humidity: 88%
Wind: 4 mph
UV Index: 0
7 AM
Sunny Weather
66°
Feels Like 64°
0
Humidity: 84%
Wind: 4 mph
UV Index: 0
8 AM
Sunny Weather
72°
Feels Like 73°
0
Humidity: 76%
Wind: 2 mph
UV Index: 11
9 AM
Cloudy Weather
73°
Feels Like 79°
0
Humidity: 68%
Wind: 4 mph
UV Index: 21
10 AM
Cloudy Weather
79°
Feels Like 82°
0
Humidity: 59%
Wind: 4 mph
UV Index: 33
11 AM
Cloudy Weather
81°
Feels Like 88°
0
Humidity: 52%
Wind: 5 mph
UV Index: 46
12 PM
Cloudy Weather
84°
Feels Like 90°
0
Humidity: 44%
Wind: 6 mph
UV Index: 59
1 PM
Sunny Weather
88°
Feels Like 91°
0
Humidity: 38%
Wind: 7 mph
UV Index: 66
2 PM
Sunny Weather
90°
Feels Like 93°
0
Humidity: 35%
Wind: 8 mph
UV Index: 59
3 PM
Sunny Weather
91°
Feels Like 93°
0
Humidity: 32%
Wind: 8 mph
UV Index: 46
4 PM
Sunny Weather
90°
Feels Like 90°
0
Humidity: 33%
Wind: 9 mph
UV Index: 33
5 PM
Sunny Weather
90°
Feels Like 88°
0
Humidity: 34%
Wind: 9 mph
UV Index: 21
6 PM
Sunny Weather
86°
Feels Like 84°
0
Humidity: 38%
Wind: 9 mph
UV Index: 11
7 PM
Night
82°
Feels Like 81°
0
Humidity: 45%
Wind: 8 mph
UV Index: 0
8 PM
Night
81°
Feels Like 79°
0
Humidity: 51%
Wind: 7 mph
UV Index: 0
9 PM
Night
77°
Feels Like 75°
0
Humidity: 57%
Wind: 6 mph
UV Index: 0
10 PM
Night
75°
Feels Like 73°
0
Humidity: 62%
Wind: 5 mph
UV Index: 0
11 PM
Night
73°
Feels Like 72°
0
Humidity: 65%
Wind: 5 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

4 AM
57 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 20.63 µg/m³
  • PM10: 20.73 µg/m³
  • O₃: 6.26 ppb
  • NO₂: 20.41 ppb
  • SO₂: 1.41 ppb
  • CO: 257.81 ppb

Health Recommendations:

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

5 AM
58 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 19.33 µg/m³
  • PM10: 19.37 µg/m³
  • O₃: 5.57 ppb
  • NO₂: 18.49 ppb
  • SO₂: 1.13 ppb
  • CO: 251.16 ppb

Health Recommendations:

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

6 AM
58 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 18.30 µg/m³
  • PM10: 18.35 µg/m³
  • O₃: 8.40 ppb
  • NO₂: 17.08 ppb
  • SO₂: 1.16 ppb
  • CO: 258.11 ppb

Health Recommendations:

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

7 AM
59 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 18.33 µg/m³
  • PM10: 18.36 µg/m³
  • O₃: 11.23 ppb
  • NO₂: 15.67 ppb
  • SO₂: 1.19 ppb
  • CO: 265.07 ppb

Health Recommendations:

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

8 AM
60 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 18.58 µg/m³
  • PM10: 18.60 µg/m³
  • O₃: 14.06 ppb
  • NO₂: 14.25 ppb
  • SO₂: 1.23 ppb
  • CO: 272.02 ppb

Health Recommendations:

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

9 AM
60 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 11.30 µg/m³
  • PM10: 11.39 µg/m³
  • O₃: 24.31 ppb
  • NO₂: 10.52 ppb
  • SO₂: 1.29 ppb
  • CO: 222.32 ppb

Health Recommendations:

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

10 AM
59 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 8.09 µg/m³
  • PM10: 8.22 µg/m³
  • O₃: 34.57 ppb
  • NO₂: 6.79 ppb
  • SO₂: 1.36 ppb
  • CO: 172.63 ppb

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.54 µg/m³
  • PM10: 6.68 µg/m³
  • O₃: 44.82 ppb
  • NO₂: 3.06 ppb
  • SO₂: 1.42 ppb
  • CO: 122.94 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
58 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 5.91 µg/m³
  • PM10: 6.05 µg/m³
  • O₃: 49.48 ppb
  • NO₂: 2.51 ppb
  • SO₂: 1.26 ppb
  • CO: 118.51 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
58 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 5.95 µg/m³
  • PM10: 6.06 µg/m³
  • O₃: 54.14 ppb
  • NO₂: 1.95 ppb
  • SO₂: 1.10 ppb
  • CO: 114.08 ppb

Health Recommendations:

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