TODAY NOV22
TEMPERATURE64
HUMIDITY67
PRESSURE101660
WIND COND.130 27.7
  • 6453Fri100%100%
  • 6047Sat70%40%
  • 5850Sun60%70%
  • 6050Mon
  • 5947Tue
daynightWeather update from Hayward, Hayward Air Terminal at
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Weather Quick Facts

  • The highest monthly average temperature in Harder-Tennyson for August is 64.4 degrees
  • The lowest monthly average temperature in Harder-Tennyson for December is 49.2 degrees
  • The most monthly precipitation in Harder-Tennyson occurs in January with 3.5 inches
  • The air quality index in Harder-Tennyson is 2% worse than the national average
  • The pollution index in Harder-Tennyson is 136% worse than the national average

Compare Hayward, CA Weather

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      Harder-Tennyson 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"

      Harder-Tennyson 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.
      IndexHarder-TennysonHaywardCalifornia
      Air quality index434355
      Pollution index6,427,2906,427,29010,473,190

      Harder-Tennyson air quality

      MeasurementTotal
      Days measured365
      Days with good air quality263
      Days with moderate air quality98
      Days w/ poor A.Q. for sensitive groups4
      Days with unhealthy air quality0

      Air quality details

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

      Average monthly Harder-Tennyson temperature with heat index

      Harder-Tennyson monthly precipitation with daily maximum

      Harder-Tennyson monthly snow depth with daily maximum

      Harder-Tennyson monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Camino Tassajara, CA5,8704020.0%
      Diablo, CA8344020.0%
      Moraga, CA16,8964020.0%
      San Leandro, CA90,4894020.0%
      Oakland, CA422,5754020.0%
      Hayward, CA158,8174314.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Alexandria, VA158,309476.0%
      Barrie, ON159,618n/a 
      Lancaster, CA157,6977244.0%
      Coquitlam, BC159,980n/a 
      Abbotsford, BC160,174n/a 
      Hayward, CA158,8174314.0%
      Source: The Harder-Tennyson, 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.