TODAY AUG15
TEMPERATURE79
HUMIDITY54
PRESSURE29.95
WIND COND.
  • 8167Wed30%40%
  • 7964Thu40%40%
  • 8062Fri20%20%
  • 8262Sat
  • 8264Sun
daynightWeather update from Milwaukee-Timmerman at

Brookfield 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
January15°F28°F21°F0.6"
February15°F29°F22°F2.8"
March27°F43°F34°F2.9"
April37°F55°F45°F3.1"
May47°F67°F56°F8.9"
June56°F76°F66°F19.6"
July61°F80°F70°F14.9"
August60°F78°F69°F2.3"
September53°F72°F61°F10.4"
October42°F59°F50°F6.6"
November31°F46°F38°F3.6"
December20°F32°F26°F1.8"

Did you know?

  • The highest monthly average temperature in Brookfield for July is 70 degrees.
  • The lowest monthly average temperature in Brookfield for January is 21 degrees.
  • The most monthly precipitation in Brookfield occurs in June with 19.6 inches.
  • The air quality index in Brookfield is 9% better than the national average.
  • The pollution index in Brookfield is 238% worse than the national average.

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Compare Brookfield, WI Weather To Other Cities

Brookfield 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.
IndexBrookfieldWisconsinNational
Air quality index456950
Pollution index17,168,0003,316,8775,066,862

Brookfield air quality information

MeasurementTotal
Days measured365
Days with good air quality211
Days with moderate air quality154
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Brookfield air quality information

PollutantTotal
Arsenic0.030%
Benzene0.160%
Carbon Tetrachloride0.050%
Lead0.160%
Mercury0.150%

Average monthly Brookfield temperature with heat index

Brookfield monthly precipitation with daily maximum

Brookfield monthly snow depth with daily maximum

Brookfield monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Oak Creek, WI35,2183530%
Mukwonago, WI7,5493628%
North Prairie, WI2,3913628%
Delafield, WI7,2183726%
Nashotah, WI1,4283726%
Brookfield, WI37,9914510%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Wheeling, IL38,0086020%
Lake Oswego, OR38,0653824%
Gainesville, GA37,9064216%
Muskegon, MI38,0863824%
Westerville, OH38,0894314%
Brookfield, WI37,9914510%
Source: The Brookfield, WI 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.