TODAY NOV22
TEMPERATURE40
HUMIDITY96
PRESSURE
WIND COND.315 4.4
  • 4736Fri100%30%
  • 4833Sat20%
  • 4231Sun20%30%
  • 4229Mon30%20%
  • 4029Tue
daynightWeather update from GEORGE at
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Weather Quick Facts

  • The highest monthly average temperature in Royal City for July is 80.3 degrees
  • The lowest monthly average temperature in Royal City for January is 29.9 degrees
  • The most monthly precipitation in Royal City occurs in September with 2.3 inches
  • The air quality index in Royal City is 57% better than the national average
  • The pollution index in Royal City is 2% better than the national average

Compare Royal City, WA Weather

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      Royal City 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°F37°F30°F0.7"
      February28°F49°F38°F1.2"
      March37°F61°F49°F1.8"
      April40°F67°F54°F0.9"
      May50°F78°F65°F1.7"
      June55°F83°F69°F1.4"
      July64°F95°F80°F1.1"
      August60°F92°F76°F1.4"
      September51°F80°F66°F2.3"
      October42°F64°F53°F1.8"
      November32°F47°F40°F1.5"
      December25°F37°F31°F2.1"

      Royal City 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 CityWashingtonNational
      Air quality index183642
      Pollution index2,683,4104,541,8502,726,193

      Royal City air quality

      MeasurementTotal
      Days measured365
      Days with good air quality339
      Days with moderate air quality26
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.000%
      Benzene0.040%
      Carbon Tetrachloride0.004%
      Lead0.030%
      Mercury0.000%

      Average monthly Royal City temperature with heat index

      Royal City monthly precipitation with daily maximum

      Royal City monthly snow depth with daily maximum

      Royal City monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      George, WA8231864.0%
      Desert Aire, WA2,7163824.0%
      Mattawa, WA5,0403824.0%
      Royal City, WA2,3841864.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Commerce, OK2,3843824.0%
      Kelsey, MB2,384n/a 
      Gray Summit, MO2,383548.0%
      Tofino, BC2,383n/a 
      Kenly, NC2,3854020.0%
      Royal City, WA2,3841864.0%
      Source: The Royal City, WA 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.