Alton, IN Weather - Forecast & Monthly Averages

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TEMPERATURE	89
HUMIDITY	65
PRESSURE	101390
WIND COND.	200 22.3

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Weather Quick Facts

The highest monthly average temperature in Alton for July is 76.5 degrees
The lowest monthly average temperature in Alton for January is 33.9 degrees
The most monthly precipitation in Alton occurs in May with 8.8 inches
The air quality index in Alton is 86% better than the national average
The pollution index in Alton is 80% 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	26°F	44°F	34°F	5.7"
February	27°F	46°F	36°F	5.3"
March	38°F	59°F	48°F	7.5"
April	47°F	71°F	58°F	8.0"
May	56°F	77°F	66°F	8.8"
June	64°F	86°F	74°F	6.4"
July	67°F	87°F	77°F	8.3"
August	66°F	87°F	76°F	6.3"
September	59°F	81°F	69°F	8.4"
October	47°F	70°F	58°F	8.6"
November	37°F	58°F	47°F	5.9"
December	30°F	48°F	38°F	7.8"

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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	Indiana	National
Air quality index	6	56	42
Pollution index	547,315	2,719,453	2,726,193

Alton air quality

Measurement	Total
Days measured	272
Days with good air quality	254
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.
Leavenworth, IN	406	6	88.0%
Mauckport, IN	32	39	22.0%
Brandenburg, KY	2,874	39	22.0%
Ekron, KY	266	39	22.0%
New Amsterdam, IN	103	49	2.0%
Alton, IN	23	6	88.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Ferry, AK	23	38	24.0%
Benton, AL	23	52	4.0%
Oak Hill, AL	23	52	4.0%
Coulterville, CA	23	39	22.0%
Parshall, CO	23	47	6.0%
Alton, IN	23	6	88.0%

Source: The Alton, IN 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.