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Irwin 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
January27°F47°F36°F2.6"
February30°F50°F39°F10.5"
March41°F62°F50°F6.8"
April50°F71°F60°F5.0"
May58°F77°F67°F7.5"
June69°F88°F78°F11.1"
July72°F92°F81°F4.9"
August70°F92°F80°F10.2"
September62°F83°F71°F16.4"
October50°F72°F60°F4.3"
November40°F60°F48°F5.8"
December31°F48°F39°F2.5"

Did you know?

  • The highest monthly average temperature in Irwin for July is 81 degrees.
  • The lowest monthly average temperature in Irwin for January is 36 degrees.
  • The most monthly precipitation in Irwin occurs in September with 16.4 inches.
  • The air quality index in Irwin is 553% worse than the national average.
  • The pollution index in Irwin is 73% better than the national average.

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Compare Irwin, MO Weather To Other Cities

Irwin 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.
IndexIrwinMissouriNational
Air quality index3259750
Pollution index1,317,9602,360,5665,066,862

Irwin air quality information

MeasurementTotal
Days measured362
Days with good air quality321
Days with moderate air quality41
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Irwin air quality information

PollutantTotal
Arsenic0.001%
Benzene0.020%
Carbon Tetrachloride0.001%
Lead0.002%
Mercury0.000%

Average monthly Irwin temperature with heat index

Irwin monthly precipitation with daily maximum

Irwin monthly snow depth with daily maximum

Irwin monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Golden City, MO585325550%
Liberal, MO742325550%
Sheldon, MO506325550%
Jerico Springs, MO187325550%
Milford, MO33325550%
Irwin, MO19325550%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Valley Ranch, CA194412%
Canton City, ND193530%
Nottoway Court House, VA193922%
Middleburg, MD194314%
Placerville, ID193628%
Irwin, MO19325550%
Source: The Irwin, 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.