TODAY JUN25
TEMPERATURE68
HUMIDITY100
PRESSURE30.01
WIND COND.60 3.4
  • 7667Mon20%60%
  • 8165Tue60%50%
  • 8569Wed
  • 9073Thu20%
  • 9172Fri
daynightWeather update from Marshalltown, Marshalltown Municipal Airport at

Marshalltown 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
January-26°F57°F20°F0.3"
February-17°F63°F22°F1.2"
March-1°F81°F36°F2.0"
April15°F88°F49°F5.1"
May22°F90°F60°F5.0"
June45°F93°F70°F4.6"
July48°F97°F73°F2.2"
August41°F93°F70°F4.8"
September30°F91°F63°F3.1"
October19°F88°F50°F3.0"
November2°F77°F39°F1.3"
December-17°F59°F21°F1.2"

Did you know?

  • The highest monthly average temperature in Marshalltown for July is 73 degrees.
  • The lowest monthly average temperature in Marshalltown for January is 20 degrees.
  • The most monthly precipitation in Marshalltown occurs in April with 5.1 inches.
  • The air quality index in Marshalltown is 25% better than the national average.
  • The pollution index in Marshalltown is 89% better than the national average.

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Compare Marshalltown, IA Weather To Other Cities

Marshalltown 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.
IndexMarshalltownIowaNational
Air quality index373950
Pollution index534,7301,643,8365,066,862

Marshalltown air quality information

MeasurementTotal
Days measured214
Days with good air quality210
Days with moderate air quality4
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Marshalltown air quality information

PollutantTotal
Arsenic0.000%
Benzene0.010%
Carbon Tetrachloride0.001%
Lead0.000%
Mercury0.000%

Average monthly Marshalltown temperature with heat index

Marshalltown monthly precipitation with daily maximum

Marshalltown monthly snow depth with daily maximum

Marshalltown monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Albion, IA5733726%
Rhodes, IA2573726%
Baxter, IA1,0813726%
Ferguson, IA1373726%
Liscomb, IA2913726%
Marshalltown, IA27,6373726%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Garner, NC27,6254314%
Kirkwood, MO27,6146020%
Crofton, MD27,663492%
Forest Hills, MI27,6673922%
Maywood, CA27,6727448%
Marshalltown, IA27,6373726%
Source: The Marshalltown, IA 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.