TODAY SEP14
TEMPERATURE70
HUMIDITY69
PRESSURE101390
WIND COND.350 25.9
  • 7960Sun
  • 8964Mon
  • 9062Tue
  • 8762Wed
  • 8460Thu
daynightWeather update from Palo Alto Airport at

Weather Quick Facts

  • The highest monthly average temperature in Blacow for August is 64.4 degrees
  • The lowest monthly average temperature in Blacow for December is 49.2 degrees
  • The most monthly precipitation in Blacow occurs in January with 3.5 inches
  • The air quality index in Blacow is 2% worse than the national average
  • The pollution index in Blacow is 762% worse than the national average

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      Blacow 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"

      Blacow 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.
      IndexBlacowFremontCalifornia
      Air quality index434355
      Pollution index23,499,8006,427,29010,473,190

      Blacow 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 Blacow temperature with heat index

      Blacow monthly precipitation with daily maximum

      Blacow monthly snow depth with daily maximum

      Blacow monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Castro Valley, CA64,3924020.0%
      San Leandro, CA90,4894020.0%
      San Lorenzo, CA30,1174020.0%
      Ashland, CA23,5664020.0%
      Hayward, CA158,8174314.0%
      Fremont, CA234,8294314.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Hialeah, FL233,8764118.0%
      Arlington, VA236,434476.0%
      Garland, TX238,622512.0%
      Windsor, ON230,583n/a 
      Richmond, VA229,2334412.0%
      Fremont, CA234,8294314.0%
      Source: The Blacow, Fremont, 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.