TODAY MAR28
TEMPERATURE50
HUMIDITY52
PRESSURE101050
WIND COND.270 13
  • 5437Fri
  • 5835Sat
  • 6134Sun
  • 6439Mon
  • 7044Tue
daynightWeather update from Boise Air Terminal at
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Weather Quick Facts

  • The highest monthly average temperature in West Valley for July is 79.4 degrees
  • The lowest monthly average temperature in West Valley for January is 30.2 degrees
  • The most monthly precipitation in West Valley occurs in December with 1.9 inches
  • The air quality index in West Valley is 14% better than the national average
  • The pollution index in West Valley is 68% better than the national average

Compare Boise, ID Weather

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      West Valley 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°F39°F30°F1.3"
      February28°F48°F37°F0.9"
      March34°F58°F45°F1.5"
      April37°F65°F51°F1.2"
      May45°F75°F60°F1.2"
      June53°F85°F69°F0.8"
      July62°F97°F79°F0.2"
      August60°F93°F77°F0.3"
      September52°F83°F67°F0.5"
      October41°F68°F53°F1.0"
      November32°F52°F41°F1.3"
      December23°F39°F31°F1.9"

      West Valley 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.
      IndexWest ValleyBoiseIdaho
      Air quality index363632
      Pollution index886,004886,0042,063,710

      West Valley air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality293
      Days with moderate air quality60
      Days w/ poor A.Q. for sensitive groups9
      Days with unhealthy air quality3

      West Valley air quality information

      PollutantTotal
      Arsenic0.000%
      Benzene0.010%
      Carbon Tetrachloride0.000%
      Lead0.000%
      Mercury0.000%

      Average monthly West Valley temperature with heat index

      West Valley monthly precipitation with daily maximum

      West Valley monthly snow depth with daily maximum

      West Valley monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Robie Creek, ID1,3803628.0%
      Nampa, ID96,8253628.0%
      Hidden Springs, ID3,4163628.0%
      Kuna, ID20,9853628.0%
      Star, ID9,8193628.0%
      Boise, ID228,0573628.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Richmond, VA229,2334412.0%
      Windsor, ON230,583n/a 
      Richmond, BC222,489n/a 
      Hialeah, FL233,8764118.0%
      Baton Rouge, LA222,1914510.0%
      Boise, ID228,0573628.0%
      Source: The West Valley, Boise, ID 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.