Hourly Weather | Today › Wednesday, October 21, 2026
Riverside, California
5 AM
Cloudy Night
63°
Feels Like 63°
40
Humidity: 83%
UV Index: 0
Wind: 4 mph
6 AM
Cloudy Night
63°
Feels Like 63°
34
Humidity: 82%
UV Index: 0
Wind: 5 mph
7 AM
Cloudy Weather
61°
Feels Like 61°
29
Humidity: 87%
UV Index: 0
Wind: 5 mph
8 AM
Cloudy Weather
64°
Feels Like 64°
20
Humidity: 78%
UV Index: 0
Wind: 4 mph
9 AM
Cloudy Weather
68°
Feels Like 66°
20
Humidity: 67%
UV Index: 1
Wind: 4 mph
10 AM
Cloudy Weather
72°
Feels Like 72°
20
Humidity: 56%
UV Index: 1
Wind: 5 mph
11 AM
Cloudy Weather
75°
Feels Like 75°
20
Humidity: 48%
UV Index: 1
Wind: 5 mph
12 PM
Cloudy Weather
79°
Feels Like 79°
20
Humidity: 42%
UV Index: 2
Wind: 6 mph
1 PM
Cloudy Weather
81°
Feels Like 81°
21
Humidity: 37%
UV Index: 2
Wind: 7 mph
2 PM
Cloudy Weather
82°
Feels Like 82°
24
Humidity: 33%
UV Index: 2
Wind: 8 mph
3 PM
Cloudy Weather
82°
Feels Like 81°
24
Humidity: 34%
UV Index: 1
Wind: 9 mph
4 PM
Cloudy Weather
81°
Feels Like 79°
29
Humidity: 37%
UV Index: 1
Wind: 9 mph
5 PM
Stormy Weather
77°
Feels Like 72°
61
Humidity: 46%
UV Index: 0
Wind: 9 mph
6 PM
Cloudy Weather
73°
Feels Like 72°
49
Humidity: 51%
UV Index: 0
Wind: 8 mph
7 PM
Stormy Weather
72°
Feels Like 66°
61
Humidity: 59%
UV Index: 0
Wind: 6 mph
8 PM
Rainy Weather
70°
Feels Like 64°
59
Humidity: 65%
UV Index: 0
Wind: 5 mph
9 PM
Cloudy Night
70°
Feels Like 66°
49
Humidity: 67%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Night
68°
Feels Like 66°
49
Humidity: 71%
UV Index: 0
Wind: 5 mph
11 PM
Rainy Weather
66°
Feels Like 63°
64
Humidity: 76%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

5 AM
37 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.47 µg/m³
  • PM10: 14.87 µg/m³
  • O3: 0.040 ppm
  • NO2: 1.2 ppb
  • SO2: 0.6 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

6 AM
37 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.17 µg/m³
  • PM10: 16.71 µg/m³
  • O3: 0.040 ppm
  • NO2: 1.3 ppb
  • SO2: 0.7 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

7 AM
36 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.93 µg/m³
  • PM10: 18.29 µg/m³
  • O3: 0.039 ppm
  • NO2: 1.6 ppb
  • SO2: 0.7 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

8 AM
36 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.42 µg/m³
  • PM10: 19.18 µg/m³
  • O3: 0.039 ppm
  • NO2: 2 ppb
  • SO2: 0.7 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

9 AM
36 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.71 µg/m³
  • PM10: 19.61 µg/m³
  • O3: 0.039 ppm
  • NO2: 2.2 ppb
  • SO2: 0.6 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

10 AM
38 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.8 µg/m³
  • PM10: 19.63 µg/m³
  • O3: 0.041 ppm
  • NO2: 1.9 ppb
  • SO2: 0.6 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.65 µg/m³
  • PM10: 18.95 µg/m³
  • O3: 0.044 ppm
  • NO2: 1.2 ppb
  • SO2: 0.6 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.07 µg/m³
  • PM10: 17.1 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.42 µg/m³
  • PM10: 15.42 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.3 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

2 PM
41 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.94 µg/m³
  • PM10: 14.23 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.3 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

3 PM
41 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.49 µg/m³
  • PM10: 12.85 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

4 PM
40 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.2 µg/m³
  • PM10: 11.73 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

5 PM
40 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.07 µg/m³
  • PM10: 11.12 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.77 µg/m³
  • PM10: 10.23 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.51 µg/m³
  • PM10: 9.18 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.31 µg/m³
  • PM10: 8.3 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.18 µg/m³
  • PM10: 7.53 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

10 PM
37 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.03 µg/m³
  • PM10: 6.62 µg/m³
  • O3: 0.040 ppm
  • NO2: 0.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.83 µg/m³
  • PM10: 5.68 µg/m³
  • O3: 0.039 ppm
  • NO2: 0.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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