TODAY MAR01
TEMPERATURE33
HUMIDITY63
PRESSURE30.36
WIND COND.10 5.4
  • 4926Mon
  • 5127Tue
  • 5630Wed
  • 5734Thu
  • 6138Fri
daynightWeather update from Caldwell - Caldwell Industrial Airport at

Key findings

  • The highest monthly average temperature in Nampa for July is 78 degrees
  • The lowest monthly average temperature in Nampa for January is 30 degrees
  • The most monthly precipitation in Nampa occurs in December with 6.7 inches
  • The air quality index in Nampa is 28% better than the national average
  • The pollution index in Nampa is 86% worse than the national average

Compare Nampa, ID Weather

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      Nampa 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
      January22°F40°F30°F5.5"
      February26°F49°F36°F1.4"
      March33°F61°F46°F0.7"
      April39°F66°F51°F1.0"
      May47°F76°F60°F4.5"
      June51°F83°F66°F5.0"
      July59°F96°F78°F0.8"
      August54°F93°F73°F1.1"
      September45°F79°F61°F4.0"
      October39°F66°F50°F5.4"
      November29°F48°F37°F1.3"
      December24°F38°F30°F6.7"

      Nampa 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.
      IndexNampaIdahoNational
      Air quality index363250
      Pollution index9,401,3602,232,2855,066,862

      Nampa 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

      Nampa air quality information

      PollutantTotal
      Arsenic0.060%
      Benzene0.130%
      Carbon Tetrachloride0.090%
      Lead0.070%
      Mercury0.020%

      Average monthly Nampa temperature with heat index

      Nampa monthly precipitation with daily maximum

      Nampa monthly snow depth with daily maximum

      Nampa monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Marsing, ID1,5363628%
      Notus, ID7363628%
      Caldwell, ID50,2883628%
      Melba, ID5423628%
      Star, ID7,2553628%
      Nampa, ID87,8963628%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Reading, PA87,8994216%
      Norwalk, CT87,9304314%
      Fort Smith, AR87,7123628%
      Waukegan, IL88,1593922%
      Meridian, ID88,2473628%
      Nampa, ID87,8963628%
      Source: The Nampa, 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.