TODAY SEP20
TEMPERATURE78
HUMIDITY85
PRESSURE29.97
WIND COND.
  • 9574Thu20%20%
  • 8358Fri30%20%
  • 7256Sat
  • 7761Sun
  • 7966Mon30%30%
daynightWeather update from St. Louis, Lambert-St. Louis International Airport at
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Hazelwood 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
January24°F45°F33°F2.4"
February25°F48°F35°F2.2"
March37°F61°F48°F3.6"
April47°F72°F59°F5.4"
May57°F80°F68°F4.6"
June67°F89°F78°F5.2"
July70°F92°F81°F4.2"
August69°F91°F79°F3.6"
September61°F84°F72°F4.3"
October48°F72°F60°F3.4"
November37°F60°F48°F3.4"
December27°F47°F37°F3.5"

Did you know?

  • The highest monthly average temperature in Hazelwood for July is 81 degrees.
  • The lowest monthly average temperature in Hazelwood for January is 33 degrees.
  • The most monthly precipitation in Hazelwood occurs in April with 5.4 inches.
  • The air quality index in Hazelwood is 20% worse than the national average.
  • The pollution index in Hazelwood is 75% worse than the national average.

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Hazelwood 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.
IndexHazelwoodMissouriNational
Air quality index609750
Pollution index8,870,2302,360,5665,066,862

Hazelwood air quality information

MeasurementTotal
Days measured365
Days with good air quality99
Days with moderate air quality231
Days w/ poor A.Q. for sensitive groups33
Days with unhealthy air quality2

Hazelwood air quality information

PollutantTotal
Arsenic0.180%
Benzene0.060%
Carbon Tetrachloride0.020%
Lead0.030%
Mercury0.120%

Average monthly Hazelwood temperature with heat index

Hazelwood monthly precipitation with daily maximum

Hazelwood monthly snow depth with daily maximum

Hazelwood monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Webster Groves, MO23,1116020%
Winchester, MO1,5056020%
Alorton, IL1,9086020%
Cahokia, IL14,5746020%
Elsah, IL7466020%
Hazelwood, MO25,6046020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Soledad, CA25,6163628%
Harvey, IL25,6256020%
Owatonna, MN25,5803726%
Homewood, AL25,65250= 100
Belmont, MA25,555476%
Hazelwood, MO25,6046020%
Source: The Hazelwood, 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.