Alta Sierra, CA Weather - Forecast & Monthly Averages

TEMPERATURE	46
HUMIDITY	100
PRESSURE	102000
WIND COND.	140 11.2

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Weather Quick Facts

The highest monthly average temperature in Alta Sierra for July is 79 degrees
The lowest monthly average temperature in Alta Sierra for December is 45.7 degrees
The most monthly precipitation in Alta Sierra occurs in January with 10.1 inches
The air quality index in Alta Sierra is 5% worse than the national average
The pollution index in Alta Sierra is 57% worse than the national average

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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.
Month	Temp. _(min)	Temp. _(max)	Temp. _(avg)	Precipitation
January	38°F	57°F	47°F	10.1"
February	41°F	62°F	51°F	8.0"
March	44°F	67°F	55°F	8.4"
April	46°F	74°F	59°F	4.6"
May	53°F	83°F	68°F	2.6"
June	58°F	91°F	75°F	2.6"
July	62°F	96°F	79°F	0.2"
August	60°F	95°F	77°F	0.4"
September	57°F	90°F	73°F	1.3"
October	50°F	79°F	63°F	4.8"
November	43°F	65°F	53°F	7.5"
December	37°F	56°F	46°F	9.8"

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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.
Index	Alta Sierra	California	National
Air quality index	44	55	42
Pollution index	4,289,310	10,473,190	2,726,193

Alta Sierra air quality

Measurement	Total
Days measured	365
Days with good air quality	239
Days with moderate air quality	124
Days w/ poor A.Q. for sensitive groups	2
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.050%
Benzene	0.070%
Carbon Tetrachloride	0.001%
Lead	0.060%
Mercury	0.010%

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	Population	Air Quality Index	National Avg.
Grass Valley, CA	12,817	44	12.0%
Rough and Ready, CA	511	44	12.0%
Meadow Vista, CA	3,508	44	12.0%
Lake Wildwood, CA	4,709	44	12.0%
Smartsville, CA	487	44	12.0%
Alta Sierra, CA	7,620	44	12.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Kent, BC	7,619	n/a
Rhinelander, WI	7,617	34	32.0%
Decorah, IA	7,615	35	30.0%
Pulaski, TN	7,614	27	46.0%
Comox Valley B (Lazo North), BC	7,614	n/a
Alta Sierra, CA	7,620	44	12.0%

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.