TODAY MAR02
TEMPERATURE61
HUMIDITY
PRESSURE29.89
WIND COND.240 11.2
  • 6438Wed
  • 6039Thu
  • 6339Fri
  • 5437Sat
  • 5435Sun
daynightWeather update from Nevada County Air Park at

Key findings

  • The highest monthly average temperature in Alta Sierra for July is 79 degrees
  • The lowest monthly average temperature in Alta Sierra for December is 46 degrees
  • The most monthly precipitation in Alta Sierra occurs in January with 10.1 inches
  • The air quality index in Alta Sierra is 12% better than the national average
  • The pollution index in Alta Sierra is 15% better than the national average

Compare Alta Sierra, CA Weather

      vs
      How would you rate the weather in Alta Sierra?
      Write a review to give others more information about this area.
      How would you rate the air quality in Alta Sierra?
      Write a review to give others more information about this area.
      See all Alta Sierra poll results

      Alta Sierra 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
      January38°F57°F47°F10.1"
      February41°F62°F51°F8.0"
      March44°F67°F55°F8.4"
      April46°F74°F59°F4.6"
      May53°F83°F68°F2.6"
      June58°F91°F75°F2.6"
      July62°F96°F79°F0.2"
      August60°F95°F77°F0.4"
      September57°F90°F73°F1.3"
      October50°F79°F63°F4.8"
      November43°F65°F53°F7.5"
      December37°F56°F46°F9.8"

      Alta Sierra 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.
      IndexAlta SierraCaliforniaNational
      Air quality index445550
      Pollution index4,289,31018,106,7265,066,862

      Alta Sierra air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality239
      Days with moderate air quality124
      Days w/ poor A.Q. for sensitive groups2
      Days with unhealthy air quality0

      Alta Sierra air quality information

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

      Average monthly Alta Sierra temperature with heat index

      Alta Sierra monthly precipitation with daily maximum

      Alta Sierra monthly snow depth with daily maximum

      Alta Sierra monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Lake Wildwood, CA5,2894412%
      Smartsville, CA1424412%
      Alta, CA4484412%
      Nevada City, CA3,1174412%
      Colfax, CA2,1894412%
      Alta Sierra, CA6,6394412%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Belfast, ME6,6413628%
      Opp, AL6,6353530%
      Oneonta, AL6,6454314%
      Twin Lakes, CO6,6455816%
      Montevallo, AL6,633536%
      Alta Sierra, CA6,6394412%
      Source: The Alta Sierra, 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.