TODAY DEC08
TEMPERATURE46
HUMIDITY93
PRESSURE29.9
WIND COND.200 9.2
  • 5338Sun90%
  • 5436Mon
  • 5338Tue
  • 5639Wed
  • 5743Thu
daynightWeather update from Nevada County Air Park at
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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"

Did you know?

  • 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 16% better than the national average.
  • The pollution index in Alta Sierra is 15% better than the national average.

Compare Alta Sierra, CA Weather To Other Cities

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 index425550
Pollution index4,289,31018,106,7265,066,862

Alta Sierra air quality information

MeasurementTotal
Days measured365
Days with good air quality262
Days with moderate air quality103
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

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, CA5,2894216%
Penn Valley, CA1,6074216%
Meadow Vista, CA3,2144216%
Rough and Ready, CA1,2714216%
Colfax, CA2,1894216%
Alta Sierra, CA6,6394216%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Belfast, ME6,6413530%
Opp, AL6,6353334%
Oneonta, AL6,6453530%
Twin Lakes, CO6,645548%
Montevallo, AL6,63350= 100
Alta Sierra, CA6,6394216%
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.
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