Hourly Weather | Today Friday, September 5, 2025
Hayward, California
7 PM
Cloudy Weather
70°
Feels Like 66°
0
Humidity: 63%
Wind: 12 mph
UV Index: 3
8 PM
Cloudy Night
68°
Feels Like 64°
0
Humidity: 69%
Wind: 12 mph
UV Index: 0
9 PM
Cloudy Night
66°
Feels Like 63°
0
Humidity: 73%
Wind: 10 mph
UV Index: 0
10 PM
Cloudy Night
64°
Feels Like 63°
0
Humidity: 78%
Wind: 10 mph
UV Index: 0
11 PM
Cloudy Night
63°
Feels Like 61°
0
Humidity: 83%
Wind: 9 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

7 PM
42 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 17.62 µg/m³
  • PM10: 20.62 µg/m³
  • O₃: 37.39 ppb
  • NO₂: 4.70 ppb
  • SO₂: 0.61 ppb
  • CO: 155.63 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

8 PM
45 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 16.74 µg/m³
  • PM10: 19.96 µg/m³
  • O₃: 33.32 ppb
  • NO₂: 5.65 ppb
  • SO₂: 0.56 ppb
  • CO: 155.41 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

9 PM
47 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 16.58 µg/m³
  • PM10: 20.13 µg/m³
  • O₃: 31.03 ppb
  • NO₂: 6.07 ppb
  • SO₂: 0.59 ppb
  • CO: 153.60 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

10 PM
51 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 16.37 µg/m³
  • PM10: 19.99 µg/m³
  • O₃: 28.73 ppb
  • NO₂: 6.50 ppb
  • SO₂: 0.62 ppb
  • CO: 151.80 ppb

Health Recommendations:

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

11 PM
51 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 16.36 µg/m³
  • PM10: 19.90 µg/m³
  • O₃: 26.43 ppb
  • NO₂: 6.92 ppb
  • SO₂: 0.65 ppb
  • CO: 149.99 ppb

Health Recommendations:

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