Hourly Weather | Today Monday, July 20, 2026
Hayward, California
5 PM
Cloudy Weather
79°
Feels Like 79°
32
Humidity: 47%
UV Index: 3
Wind: 12 mph
6 PM
Cloudy Weather
75°
Feels Like 73°
32
Humidity: 52%
UV Index: 2
Wind: 12 mph
7 PM
Cloudy Weather
73°
Feels Like 72°
21
Humidity: 57%
UV Index: 1
Wind: 10 mph
8 PM
Cloudy Weather
70°
Feels Like 66°
0
Humidity: 63%
UV Index: 0
Wind: 9 mph
9 PM
Cloudy Night
66°
Feels Like 63°
0
Humidity: 71%
UV Index: 0
Wind: 8 mph
10 PM
Cloudy Night
63°
Feels Like 61°
0
Humidity: 78%
UV Index: 0
Wind: 8 mph
11 PM
Cloudy Night
63°
Feels Like 61°
0
Humidity: 79%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 4.59 µg/m³
  • PM10: 11.77 µg/m³
  • O3: 0.039 ppm
  • NO2: 0.3 ppb
  • SO2: 0.4 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.75 µg/m³
  • PM10: 12.39 µg/m³
  • O3: 0.039 ppm
  • NO2: 0.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.88 µg/m³
  • PM10: 12.9 µg/m³
  • O3: 0.037 ppm
  • NO2: 0.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.96 µg/m³
  • PM10: 13.17 µg/m³
  • O3: 0.036 ppm
  • NO2: 0.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.04 µg/m³
  • PM10: 13.26 µg/m³
  • O3: 0.035 ppm
  • NO2: 0.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.16 µg/m³
  • PM10: 13.42 µg/m³
  • O3: 0.034 ppm
  • NO2: 0.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.34 µg/m³
  • PM10: 13.72 µg/m³
  • O3: 0.033 ppm
  • NO2: 1 ppb
  • SO2: 0.4 ppb
  • CO: 0.08 ppm

Health Recommendations:

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