TODAY AUG18
TEMPERATURE69
HUMIDITY100
PRESSURE30
WIND COND.
  • 8365Sat20%
  • 8570Sun
  • 8067Mon60%70%
  • 7860Tue
  • 7857Wed
daynightWeather update from Effingham, Effingham County Memorial Airport at

Altamont Average Weather

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January22°F38°F30°F1.7"
February25°F40°F32°F2.3"
March36°F54°F44°F1.1"
April46°F67°F55°F4.3"
May55°F76°F64°F0.0"
June66°F86°F75°F3.0"
July66°F86°F75°F7.9"
August66°F87°F76°F4.8"
September59°F81°F69°F8.6"
October47°F69°F57°F1.4"
November36°F56°F46°F11.8"
December25°F38°F31°F7.1"

Did you know?

  • The highest monthly average temperature in Altamont for August is 76 degrees.
  • The lowest monthly average temperature in Altamont for January is 30 degrees.
  • The most monthly precipitation in Altamont occurs in November with 11.8 inches.
  • The air quality index in Altamont is 25% better than the national average.
  • The pollution index in Altamont is 81% better than the national average.

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Compare Altamont, IL Weather To Other Cities

Altamont 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.
IndexAltamontIllinoisNational
Air quality index374150
Pollution index959,6733,347,2955,066,862

Altamont air quality information

MeasurementTotal
Days measured214
Days with good air quality201
Days with moderate air quality13
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Altamont air quality information

PollutantTotal
Arsenic0.001%
Benzene0.040%
Carbon Tetrachloride0.000%
Lead0.000%
Mercury0.002%

Average monthly Altamont temperature with heat index

Altamont monthly precipitation with daily maximum

Altamont monthly snow depth with daily maximum

Altamont monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Shumway, IL1753726%
Watson, IL7653726%
Brownstown, IL7103726%
Herrick, IL3583726%
Sigel, IL3493726%
Altamont, IL2,3143726%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
New Stanton, PA2,3145612%
Mount Jackson, VA2,3143334%
Holyoke, CO2,3142060%
Boron, CA2,3148570%
Helmetta, NJ2,3144020%
Altamont, IL2,3143726%
Source: The Altamont, IL 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.