TODAY MAY13
TEMPERATURE59
HUMIDITY49
PRESSURE
WIND COND.
  • 8154Thu
  • 7850Fri
  • 7351Sat20%20%
  • 7651Sun
  • 7549Mon
daynightWeather update from SECRET TOWN at

Key findings

  • The highest monthly average temperature in Alta for July is 70.9 degrees
  • The lowest monthly average temperature in Alta for December is 39.2 degrees
  • The most monthly precipitation in Alta occurs in December with 11.7 inches
  • The air quality index in Alta is 12% better than the national average
  • The pollution index in Alta is 15% better than the national average

Compare Alta, CA Weather

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      Alta 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
      January35°F49°F41°F7.8"
      February35°F47°F40°F8.4"
      March36°F49°F41°F10.1"
      April38°F54°F45°F5.7"
      May46°F62°F53°F3.7"
      June55°F71°F62°F1.4"
      July64°F79°F71°F0.1"
      August63°F79°F70°F0.1"
      September58°F74°F65°F1.4"
      October48°F63°F54°F4.8"
      November40°F53°F46°F7.3"
      December34°F46°F39°F11.7"

      Alta 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.
      IndexAltaCaliforniaNational
      Air quality index445550
      Pollution index4,289,31018,106,7265,066,862

      Alta air quality information

      MeasurementTotal
      Days measured361
      Days with good air quality273
      Days with moderate air quality83
      Days w/ poor A.Q. for sensitive groups5
      Days with unhealthy air quality0

      Alta air quality information

      PollutantTotal
      Arsenic0.050%
      Benzene0.070%
      Carbon Tetrachloride0.001%
      Lead0.060%
      Mercury0.010%

      Average monthly Alta temperature with heat index

      Alta monthly precipitation with daily maximum

      Alta monthly snow depth with daily maximum

      Alta monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Nevada City, CA3,1174412%
      Colfax, CA2,1894412%
      Foresthill, CA1,2294412%
      Pike, CA654412%
      Lake of the Pines, CA3,9364412%
      Alta, CA4484412%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Custer, WA4483432%
      Galien, MI4483922%
      Bud, WV448295490%
      Siloam, GA4484412%
      Angoon, AK4482060%
      Alta, CA4484412%
      Source: The Alta, 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.