St. John, MO Weather - Forecast & Monthly Averages

TEMPERATURE	44
HUMIDITY	65
PRESSURE	102130
WIND COND.	270 7.6

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Weather Quick Facts

The highest monthly average temperature in St. John for July is 80.9 degrees
The lowest monthly average temperature in St. John for January is 33.1 degrees
The most monthly precipitation in St. John occurs in April with 5.4 inches
The air quality index in St. John is 28% worse than the national average
The pollution index in St. John is 211% worse than the national average

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St. John 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	24°F	45°F	33°F	2.4"
February	25°F	48°F	35°F	2.2"
March	37°F	61°F	48°F	3.6"
April	47°F	72°F	59°F	5.4"
May	57°F	80°F	68°F	4.6"
June	67°F	89°F	78°F	5.2"
July	70°F	92°F	81°F	4.2"
August	69°F	91°F	79°F	3.6"
September	61°F	84°F	72°F	4.3"
October	48°F	72°F	60°F	3.4"
November	37°F	60°F	48°F	3.4"
December	27°F	47°F	37°F	3.5"

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St. John 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. John	Missouri	National
Air quality index	54	97	42
Pollution index	8,473,050	1,630,255	2,726,193

St. John 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	0.020%
Benzene	0.070%
Carbon Tetrachloride	0.020%
Lead	0.010%
Mercury	0.010%

Average monthly St. John temperature with heat index

St. John monthly precipitation with daily maximum

St. John monthly snow depth with daily maximum

St. John monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Mackenzie, MO	128	54	8.0%
Shrewsbury, MO	6,108	54	8.0%
Dupo, IL	3,917	54	8.0%
Creve Coeur, MO	18,627	54	8.0%
Bel-Nor, MO	1,516	54	8.0%
St. John, MO	6,369	54	8.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Douglas, WY	6,369	42	16.0%
Air Force Academy, CO	6,368	45	10.0%
Clover, SC	6,370	49	2.0%
Iowa Park, TX	6,370	26	48.0%
Fowler, CA	6,366	60	20.0%
St. John, MO	6,369	54	8.0%

Source: The St. John, 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.