Alton, IN Weather Forecast & Monthly Average Temperatures

TEMPERATURE	73
HUMIDITY	100
PRESSURE	29.95
WIND COND.	90 3.4

Alton Average Weather

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"

Did you know?

The highest monthly average temperature in Alton for July is 77 degrees.
The lowest monthly average temperature in Alton for January is 34 degrees.
The most monthly precipitation in Alton occurs in May with 8.8 inches.
The air quality index in Alton is 77% better than the national average.
The pollution index in Alton is 89% better than the national average.

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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	11	56	50
Pollution index	547,315	3,773,618	5,066,862

Alton air quality information

Measurement	Total
Days measured	365
Days with good air quality	276
Days with moderate air quality	69
Days w/ poor A.Q. for sensitive groups	18
Days with unhealthy air quality	2

Alton air quality information

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, State	Population	Air Quality Index	National Avg.
Leavenworth, IN	306	11	78%
Brandenburg, KY	2,870	43	14%
Ekron, KY	214	43	14%
Mauckport, IN	62	43	14%
New Amsterdam, IN	16	55	10%
Alton, IN	37	11	78%

Cities with similar population

City, State	Population	Air Quality Index	National Avg.
Norcross, MN	37	35	30%
Udell, IA	37	41	18%
Paradise, KS	37	6	88%
Green Hills, PA	37	47	6%
Ocean Beach, NY	37	47	6%
Alton, IN	37	11	78%

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.