St. Peters, MO Weather - Forecast & Monthly Averages

TEMPERATURE	49
HUMIDITY	77
PRESSURE	102680
WIND COND.	30 16.6

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Weather Quick Facts

The highest monthly average temperature in St. Peters for July is 78.7 degrees
The lowest monthly average temperature in St. Peters for January is 32.1 degrees
The most monthly precipitation in St. Peters occurs in April with 5.3 inches
The air quality index in St. Peters is 28% worse than the national average
The pollution index in St. Peters is 225% worse than the national average

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St. Peters 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	23°F	44°F	32°F	2.1"
February	25°F	46°F	35°F	1.8"
March	36°F	60°F	47°F	3.7"
April	46°F	71°F	58°F	5.3"
May	55°F	78°F	66°F	4.5"
June	65°F	87°F	76°F	4.8"
July	68°F	90°F	79°F	2.9"
August	66°F	89°F	77°F	3.4"
September	58°F	82°F	69°F	3.9"
October	46°F	70°F	57°F	3.0"
November	36°F	59°F	46°F	2.8"
December	27°F	45°F	35°F	3.1"

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St. Peters 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	St. Peters	Missouri	National
Air quality index	54	97	42
Pollution index	8,870,230	1,630,255	2,726,193

St. Peters air quality

Measurement	Total
Days measured	365
Days with good air quality	134
Days with moderate air quality	221
Days w/ poor A.Q. for sensitive groups	8
Days with unhealthy air quality	2

Air quality details

Pollutant	Total
Arsenic	0.180%
Benzene	0.060%
Carbon Tetrachloride	0.020%
Lead	0.030%
Mercury	0.120%

Average monthly St. Peters temperature with heat index

St. Peters monthly precipitation with daily maximum

St. Peters monthly snow depth with daily maximum

St. Peters monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Elsah, IL	701	54	8.0%
Chain of Rocks, MO	252	54	8.0%
Lake St. Louis, MO	16,357	54	8.0%
Clayton, MO	16,763	54	8.0%
Ladue, MO	8,631	54	8.0%
St. Peters, MO	57,536	54	8.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Towson, MD	57,542	46	8.0%
Santee, CA	57,407	64	28.0%
Midwest City, OK	57,392	48	4.0%
Richland, WA	57,353	37	26.0%
Bradenton, FL	57,346	38	24.0%
St. Peters, MO	57,536	54	8.0%

Source: The St. Peters, MO 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.