Hourly Weather | Today Thursday, May 21, 2026
Richmond, California
9 AM
Cloudy Weather
59°
Feels Like 63°
0
Humidity: 73%
UV Index: 3
Wind: 7 mph
10 AM
Cloudy Weather
63°
Feels Like 66°
0
Humidity: 67%
UV Index: 5
Wind: 7 mph
11 AM
Cloudy Weather
64°
Feels Like 72°
0
Humidity: 62%
UV Index: 7
Wind: 8 mph
12 PM
Cloudy Weather
66°
Feels Like 73°
0
Humidity: 58%
UV Index: 10
Wind: 9 mph
1 PM
Cloudy Weather
68°
Feels Like 75°
0
Humidity: 55%
UV Index: 11
Wind: 10 mph
2 PM
Cloudy Weather
70°
Feels Like 75°
0
Humidity: 52%
UV Index: 10
Wind: 12 mph
3 PM
Cloudy Weather
70°
Feels Like 73°
0
Humidity: 54%
UV Index: 7
Wind: 12 mph
4 PM
Cloudy Weather
68°
Feels Like 70°
0
Humidity: 54%
UV Index: 5
Wind: 13 mph
5 PM
Cloudy Weather
66°
Feels Like 66°
0
Humidity: 57%
UV Index: 3
Wind: 13 mph
6 PM
Cloudy Weather
64°
Feels Like 64°
0
Humidity: 62%
UV Index: 2
Wind: 12 mph
7 PM
Cloudy Weather
63°
Feels Like 59°
0
Humidity: 68%
UV Index: 1
Wind: 12 mph
8 PM
Cloudy Weather
59°
Feels Like 55°
0
Humidity: 72%
UV Index: 0
Wind: 12 mph
9 PM
Cloudy Night
55°
Feels Like 52°
0
Humidity: 80%
UV Index: 0
Wind: 10 mph
10 PM
Cloudy Night
54°
Feels Like 48°
0
Humidity: 86%
UV Index: 0
Wind: 10 mph
11 PM
Cloudy Night
54°
Feels Like 48°
0
Humidity: 88%
UV Index: 0
Wind: 10 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 5.48 µg/m³
  • PM10: 19.17 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.

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

Pollutant Concentrations:

  • PM2.5: 5.76 µg/m³
  • PM10: 19.87 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.04 µg/m³
  • PM10: 20.45 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 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: 6.35 µg/m³
  • PM10: 21.14 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.67 µg/m³
  • PM10: 21.77 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.95 µg/m³
  • PM10: 22.18 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.23 µg/m³
  • PM10: 22.62 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.51 µg/m³
  • PM10: 23.09 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.81 µg/m³
  • PM10: 23.64 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.11 µg/m³
  • PM10: 24.17 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.2 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
43 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.31 µg/m³
  • PM10: 24.44 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.3 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
43 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.46 µg/m³
  • PM10: 24.57 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.56 µg/m³
  • PM10: 24.52 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.65 µg/m³
  • PM10: 24.6 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.

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

Pollutant Concentrations:

  • PM2.5: 8.74 µg/m³
  • PM10: 24.98 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.