TODAY OCT21
TEMPERATURE55
HUMIDITY34
PRESSURE30.05
WIND COND.210 12.8
  • 6132Mon
  • 5030Tue
  • 5137Wed
  • 4938Thu30%30%
  • 5340Fri40%
daynightWeather update from Waterloo, Waterloo Municipal Airport at
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Waterloo 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
January9°F29°F19°F1.3"
February11°F33°F22°F1.2"
March25°F49°F36°F1.9"
April36°F63°F49°F5.0"
May47°F74°F60°F4.8"
June58°F83°F71°F6.5"
July61°F86°F74°F4.9"
August58°F84°F71°F4.0"
September51°F79°F64°F3.4"
October39°F65°F51°F3.2"
November27°F50°F38°F1.8"
December14°F33°F23°F2.1"

Did you know?

  • The highest monthly average temperature in Waterloo for July is 74 degrees.
  • The lowest monthly average temperature in Waterloo for January is 19 degrees.
  • The most monthly precipitation in Waterloo occurs in June with 6.5 inches.
  • The air quality index in Waterloo is 13% better than the national average.
  • The pollution index in Waterloo is 91% better than the national average.

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Waterloo 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.
IndexWaterlooIowaNational
Air quality index433950
Pollution index416,1141,643,8365,066,862

Waterloo air quality information

MeasurementTotal
Days measured365
Days with good air quality240
Days with moderate air quality122
Days w/ poor A.Q. for sensitive groups3
Days with unhealthy air quality

Waterloo air quality information

PollutantTotal
Arsenic0.000%
Benzene0.004%
Carbon Tetrachloride0.001%
Lead0.000%
Mercury0.000%

Average monthly Waterloo temperature with heat index

Waterloo monthly precipitation with daily maximum

Waterloo monthly snow depth with daily maximum

Waterloo monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Denver, IA1,8144314%
Evansdale, IA4,7944314%
Jesup, IA2,8094314%
Readlyn, IA8434314%
Dike, IA1,3094314%
Waterloo, IA68,3574314%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
St. Charles, MO68,3416020%
Jacksonville, NC68,4043334%
Frederick, MD68,2294118%
Mount Vernon, NY68,217536%
Pasco, WA68,5672550%
Waterloo, IA68,3574314%
Source: The Waterloo, 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.