Simi Valley, CA Weather - Forecast & Monthly Averages

TEMPERATURE	52
HUMIDITY	80
PRESSURE	101773.2
WIND COND.	252 4

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Weather Quick Facts

The highest monthly average temperature in Simi Valley for July is 78.7 degrees
The lowest monthly average temperature in Simi Valley for January is 51.6 degrees
The most monthly precipitation in Simi Valley occurs in September with 28.1 inches
The air quality index in Simi Valley is 71% worse than the national average
The pollution index in Simi Valley is 396% worse than the national average

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Simi Valley 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	45°F	62°F	52°F	19.1"
February	46°F	65°F	54°F	5.8"
March	47°F	69°F	56°F	3.2"
April	47°F	73°F	58°F	3.0"
May	53°F	79°F	64°F	0.6"
June	59°F	87°F	71°F	0.0"
July	65°F	96°F	79°F	0.0"
August	63°F	94°F	76°F	0.0"
September	61°F	90°F	74°F	28.1"
October	57°F	81°F	67°F	5.9"
November	53°F	74°F	61°F	1.3"
December	44°F	63°F	52°F	4.0"

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Simi Valley 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	Simi Valley	California	National
Air quality index	72	55	42
Pollution index	13,529,800	10,473,190	2,726,193

Simi Valley air quality information

Measurement	Total
Days measured	365
Days with good air quality	66
Days with moderate air quality	208
Days w/ poor A.Q. for sensitive groups	62
Days with unhealthy air quality	28

Simi Valley air quality information

Pollutant	Total
Arsenic	0.150%
Benzene	0.190%
Carbon Tetrachloride	0.010%
Lead	0.180%
Mercury	0.070%

Average monthly Simi Valley temperature with heat index

Simi Valley monthly precipitation with daily maximum

Simi Valley monthly snow depth with daily maximum

Simi Valley monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Lake Sherwood, CA	1,697	46	8.0%
Santa Rosa Valley, CA	2,721	46	8.0%
Thousand Oaks, CA	127,648	46	8.0%
Casa Conejo, CA	3,184	46	8.0%
Westlake Village, CA	8,203	46	8.0%
Simi Valley, CA	125,768	72	44.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Saanich, BC	125,800	n/a
Pearland, TX	125,817	52	4.0%
Topeka, KS	125,819	41	18.0%
Athens, GA	124,962	44	12.0%
Lafayette, LA	126,674	41	18.0%
Simi Valley, CA	125,768	72	44.0%

Source: The Simi Valley, 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.