Alton, MO Weather - Forecast & Monthly Averages

TEMPERATURE	47
HUMIDITY	56
PRESSURE	102100
WIND COND.

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Weather Quick Facts

The highest monthly average temperature in Alton for August is 80.3 degrees
The lowest monthly average temperature in Alton for January is 36.1 degrees
The most monthly precipitation in Alton occurs in July with 10.3 inches
The air quality index in Alton is 14% better than the national average
The pollution index in Alton is 89% better than the national average

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Alton 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	29°F	46°F	36°F	7.4"
February	29°F	50°F	38°F	6.4"
March	40°F	63°F	51°F	2.9"
April	46°F	67°F	56°F	7.0"
May	55°F	78°F	67°F	4.1"
June	63°F	86°F	74°F	4.4"
July	66°F	88°F	77°F	10.3"
August	69°F	93°F	80°F	7.0"
September	62°F	84°F	72°F	10.2"
October	50°F	71°F	59°F	4.8"
November	38°F	60°F	48°F	9.4"
December	28°F	46°F	36°F	5.9"

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Alton 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	Alton	Missouri	National
Air quality index	36	97	42
Pollution index	305,376	1,630,255	2,726,193

Alton air quality

Measurement	Total
Days measured	365
Days with good air quality	347
Days with moderate air quality	18
Days w/ poor A.Q. for sensitive groups	0
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.000%
Benzene	0.010%
Carbon Tetrachloride	0.001%
Lead	0.000%
Mercury	0.000%

Average monthly Alton temperature with heat index

Alton monthly precipitation with daily maximum

Alton monthly snow depth with daily maximum

Alton monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Koshkonong, MO	153	36	28.0%
Thayer, MO	2,578	36	28.0%
Thomasville, MO	0	36	28.0%
Mammoth Spring, AR	1,117	36	28.0%
Alton, MO	638	36	28.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Mountain Park city, GA	638	52	4.0%
Elgin, IA	638	39	22.0%
Oretta, LA	638	45	10.0%
Lake Benton, MN	638	42	16.0%
Warner, NH	638	27	46.0%
Alton, MO	638	36	28.0%

Source: The Alton, 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.