TODAY NOV20
TEMPERATURE31
HUMIDITY84
PRESSURE30.27
WIND COND.310 6.9
  • 3628Tue
  • 4929Wed
  • 5137
  • 4942Fri80%
  • 5338Sat
daynightWeather update from St. Louis Regional Airport at

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Royal Lakes 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
January23°F38°F29°F3.3"
February24°F40°F31°F3.5"
March36°F55°F44°F3.9"
April45°F67°F55°F9.3"
May55°F75°F64°F5.6"
June64°F84°F73°F7.9"
July66°F86°F76°F5.0"
August65°F86°F74°F5.1"
September57°F80°F67°F6.0"
October46°F68°F56°F5.6"
November36°F54°F44°F3.6"
December28°F42°F34°F3.6"

Did you know?

  • The highest monthly average temperature in Royal Lakes for July is 76 degrees.
  • The lowest monthly average temperature in Royal Lakes for January is 29 degrees.
  • The most monthly precipitation in Royal Lakes occurs in April with 9.3 inches.
  • The air quality index in Royal Lakes is 20% worse than the national average.
  • The pollution index in Royal Lakes is 77% better than the national average.

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Compare Royal Lakes, IL Weather To Other Cities

Royal Lakes 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.
IndexRoyal LakesIllinoisNational
Air quality index604150
Pollution index1,150,6703,347,2955,066,862

Royal Lakes 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

Royal Lakes air quality information

PollutantTotal
Arsenic0.001%
Benzene0.030%
Carbon Tetrachloride0.000%
Lead0.000%
Mercury0.000%

Average monthly Royal Lakes temperature with heat index

Royal Lakes monthly precipitation with daily maximum

Royal Lakes monthly snow depth with daily maximum

Royal Lakes monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Carlinville, IL5,2973530%
Chesterfield, IL3363530%
Alton, IL27,1756020%
Bunker Hill, IL1,7306020%
Eagarville, IL1656020%
Royal Lakes, IL1346020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Oldtown, MD1343726%
Alleghany, CA1344412%
Marietta, NC1343040%
Vale, SD1344314%
Woodward, PA1343922%
Royal Lakes, IL1346020%
Source: The Royal Lakes, IL 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.