TODAY DEC11
TEMPERATURE54
HUMIDITY90
PRESSURE30.21
WIND COND.90 3.4
  • 6054Wed20%
  • 6253Thu30%20%
  • 6049Fri20%20%
  • 5743Sat
  • 5641Sun
daynightWeather update from Hayward, Hayward Air Terminal at
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Hayward Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January42°F58°F50°F3.5"
February46°F61°F53°F3.3"
March46°F64°F54°F2.6"
April48°F66°F56°F1.8"
May52°F69°F59°F0.6"
June56°F73°F62°F0.1"
July57°F75°F64°F0.0"
August58°F76°F64°F0.0"
September57°F76°F64°F0.2"
October53°F72°F61°F1.4"
November48°F66°F56°F1.3"
December42°F58°F49°F3.2"

Did you know?

  • The highest monthly average temperature in Hayward for August is 64 degrees.
  • The lowest monthly average temperature in Hayward for December is 49 degrees.
  • The most monthly precipitation in Hayward occurs in January with 3.5 inches.
  • The air quality index in Hayward is 3% better than the national average.
  • The pollution index in Hayward is 27% worse than the national average.

Compare Hayward, CA Weather To Other Cities

Hayward air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
IndexHaywardCaliforniaNational
Air quality index485550
Pollution index6,427,29018,106,7265,066,862

Hayward air quality information

MeasurementTotal
Days measured365
Days with good air quality204
Days with moderate air quality153
Days w/ poor A.Q. for sensitive groups7
Days with unhealthy air quality1

Hayward air quality information

PollutantTotal
Arsenic0.010%
Benzene0.110%
Carbon Tetrachloride0.010%
Lead0.010%
Mercury0.003%

Average monthly Hayward temperature with heat index

Hayward monthly precipitation with daily maximum

Hayward monthly snow depth with daily maximum

Hayward monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Camino Tassajara, CA3,4564314%
Danville, CA43,7584314%
Orinda, CA18,9364314%
San Ramon, CA74,3664314%
Alameda, CA77,4094314%
Hayward, CA154,507484%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Springfield, MA153,9913922%
Macon-Bibb County, GA153,9254118%
Pasadena, TX153,286524%
Cary, NC155,8224314%
Salinas, CA155,8893628%
Hayward, CA154,507484%
Source: The Hayward, CA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.
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