TODAY SEP20
TEMPERATURE87
HUMIDITY57
PRESSURE29.78
WIND COND.200 15
  • 6646Fri
  • 6950Sat
  • 7656Sun
  • 7656Mon50%
  • 6949Tue30%
daynightWeather update from Des Moines, Des Moines International Airport at
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Downtown Des Moines Average Temperature

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
January14°F35°F23°F0.9"
February17°F39°F26°F1.2"
March30°F54°F41°F2.2"
April41°F67°F53°F4.9"
May51°F76°F63°F4.9"
June62°F86°F74°F6.5"
July66°F89°F77°F4.2"
August64°F87°F75°F5.1"
September56°F81°F68°F3.7"
October43°F68°F55°F3.2"
November31°F54°F42°F1.8"
December18°F38°F27°F2.1"

Did you know?

  • The highest monthly average temperature in Downtown Des Moines for July is 77 degrees.
  • The lowest monthly average temperature in Downtown Des Moines for January is 23 degrees.
  • The most monthly precipitation in Downtown Des Moines occurs in June with 6.5 inches.
  • The air quality index in Downtown Des Moines is 17% better than the national average.
  • The pollution index in Downtown Des Moines is 83% worse than the national average.

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Downtown Des Moines 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.
IndexDowntown Des MoinesDes MoinesIowa
Air quality index414139
Pollution index9,310,1609,310,1601,643,836

Downtown Des Moines air quality information

MeasurementTotal
Days measured365
Days with good air quality267
Days with moderate air quality98
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Downtown Des Moines air quality information

PollutantTotal
Arsenic0.010%
Benzene0.110%
Carbon Tetrachloride0.080%
Lead0.030%
Mercury0.010%

Average monthly Downtown Des Moines temperature with heat index

Downtown Des Moines monthly precipitation with daily maximum

Downtown Des Moines monthly snow depth with daily maximum

Downtown Des Moines monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Carlisle, IA4,0314118%
Granger, IA1,4614118%
Martensdale, IA4524118%
Polk City, IA4,1154118%
Spring Hill, IA604118%
Des Moines, IA212,8594118%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Birmingham, AL212,42450= 100
Spokane, WA212,0783922%
San Bernardino, CA214,5818570%
Rochester, NY210,2913628%
Richmond, VA216,7733922%
Des Moines, IA212,8594118%
Source: The Downtown Des Moines, Des Moines, 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.