Piedmont, CA Weather - Forecast & Monthly Averages

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TEMPERATURE	53
HUMIDITY	87
PRESSURE	101520
WIND COND.	242

Weather Quick Facts

The highest monthly average temperature in Piedmont for September is 63.6 degrees
The lowest monthly average temperature in Piedmont for January is 49.6 degrees
The most monthly precipitation in Piedmont occurs in December with 4.1 inches
The air quality index in Piedmont is 5% better than the national average
The pollution index in Piedmont is 604% worse than the national average

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Piedmont 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	41°F	59°F	50°F	2.8"
February	45°F	62°F	53°F	3.1"
March	47°F	65°F	55°F	2.9"
April	49°F	67°F	57°F	1.8"
May	52°F	69°F	59°F	0.4"
June	54°F	72°F	62°F	0.3"
July	56°F	73°F	63°F	0.0"
August	57°F	73°F	63°F	0.0"
September	55°F	76°F	64°F	0.1"
October	52°F	73°F	61°F	1.0"
November	47°F	65°F	56°F	1.9"
December	42°F	59°F	50°F	4.1"

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Piedmont 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	Piedmont	California	National
Air quality index	40	55	42
Pollution index	19,202,400	10,473,190	2,726,193

Piedmont air quality

Measurement	Total
Days measured	365
Days with good air quality	290
Days with moderate air quality	74
Days w/ poor A.Q. for sensitive groups	1
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.180%
Benzene	0.140%
Carbon Tetrachloride	0.010%
Lead	0.280%
Mercury	0.060%

Average monthly Piedmont temperature with heat index

Piedmont monthly precipitation with daily maximum

Piedmont monthly snow depth with daily maximum

Piedmont monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Castle Hill, CA	1,189	40	20.0%
Martinez, CA	39,841	40	20.0%
Pleasant Hill, CA	35,995	40	20.0%
Saranap, CA	6,163	40	20.0%
Castro Valley, CA	66,114	40	20.0%
Piedmont, CA	11,734	40	20.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Upper Montclair, NJ	11,734	51	2.0%
Mendota Heights, MN	11,733	46	8.0%
Pontiac, IL	11,732	44	12.0%
Gardnerville Ranchos, NV	11,732	13	74.0%
Hamilton, ON	11,739	n/a
Piedmont, CA	11,734	40	20.0%

Source: The Piedmont, 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.