TODAY NOV21
TEMPERATURE44
HUMIDITY96
PRESSURE101420
WIND COND. 7.6
  • 5038Fri100%100%
  • 4532Sat70%40%
  • 4328Sun30%30%
  • 4129Mon40%30%
  • 4129Tue30%30%
daynightWeather update from Spokane, Spokane International Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Riverside for July is 72.8 degrees
  • The lowest monthly average temperature in Riverside for December is 30.4 degrees
  • The most monthly precipitation in Riverside occurs in December with 2.4 inches
  • The air quality index in Riverside is 2% worse than the national average
  • The pollution index in Riverside is 18% better than the national average

Compare Spokane, WA Weather

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      Riverside 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
      January25°F38°F31°F2.0"
      February28°F43°F34°F1.4"
      March32°F52°F41°F2.4"
      April36°F61°F47°F1.3"
      May43°F72°F57°F1.2"
      June50°F78°F64°F2.0"
      July57°F90°F73°F0.5"
      August55°F88°F71°F0.4"
      September47°F78°F61°F0.6"
      October39°F62°F49°F1.7"
      November32°F47°F39°F2.0"
      December25°F37°F30°F2.4"

      Riverside 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.
      IndexRiversideSpokaneWashington
      Air quality index434336
      Pollution index2,233,3502,233,3504,541,850

      Riverside air quality

      MeasurementTotal
      Days measured365
      Days with good air quality252
      Days with moderate air quality111
      Days w/ poor A.Q. for sensitive groups2
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.002%
      Benzene0.030%
      Carbon Tetrachloride0.002%
      Lead0.003%
      Mercury0.001%

      Average monthly Riverside temperature with heat index

      Riverside monthly precipitation with daily maximum

      Riverside monthly snow depth with daily maximum

      Riverside monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Cheney, WA12,4554314.0%
      Country Homes, WA5,8774314.0%
      Rockford, WA4184314.0%
      Fairchild AFB, WA3,4644314.0%
      Green Bluff, WA3664314.0%
      Spokane, WA219,1854314.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Spring Valley, NV218,697548.0%
      San Bernardino, CA216,7848978.0%
      Baton Rouge, LA222,1914510.0%
      Richmond, BC222,489n/a 
      Tacoma, WA215,7661864.0%
      Spokane, WA219,1854314.0%
      Source: The Riverside, Spokane, 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.