TODAY MAR28
TEMPERATURE79
HUMIDITY17
PRESSURE101320
WIND COND. 9.4
  • 8256Fri
  • 8254Sat50%
  • 6450Sun70%60%
  • 6548Mon60%
  • 7351Tue
daynightWeather update from Phoenix, Phoenix Sky Harbor International Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Northwest for July is 95.9 degrees
  • The lowest monthly average temperature in Northwest for December is 55.5 degrees
  • The most monthly precipitation in Northwest occurs in August with 1.4 inches
  • The air quality index in Northwest is 76% worse than the national average
  • The pollution index in Northwest is 49% worse than the national average

Compare Mesa, AZ Weather

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      Northwest 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
      January45°F69°F56°F0.8"
      February48°F74°F60°F0.7"
      March54°F81°F67°F0.5"
      April60°F88°F74°F0.2"
      May68°F96°F83°F0.2"
      June79°F107°F94°F0.0"
      July84°F108°F96°F0.9"
      August83°F107°F94°F1.4"
      September77°F102°F89°F0.8"
      October65°F92°F78°F0.2"
      November54°F80°F66°F0.4"
      December45°F69°F55°F0.9"

      Northwest 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.
      IndexNorthwestMesaArizona
      Air quality index747457
      Pollution index4,063,3804,063,3809,766,019

      Northwest air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality50
      Days with moderate air quality261
      Days w/ poor A.Q. for sensitive groups42
      Days with unhealthy air quality2

      Northwest air quality information

      PollutantTotal
      Arsenic0.004%
      Benzene0.060%
      Carbon Tetrachloride0.010%
      Lead0.040%
      Mercury0.001%

      Average monthly Northwest temperature with heat index

      Northwest monthly precipitation with daily maximum

      Northwest monthly snow depth with daily maximum

      Northwest monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Chandler, AZ257,0767448.0%
      Gilbert, AZ248,3497448.0%
      Scottsdale, AZ254,9957448.0%
      Maricopa Colony, AZ8187448.0%
      Guadalupe, AZ6,5727448.0%
      Mesa, AZ508,9187448.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Sacramento, CA503,482524.0%
      Atlanta, GA497,642524.0%
      Fresno, CA526,1476020.0%
      Kansas City, MO491,158476.0%
      Omaha, NE479,5294020.0%
      Mesa, AZ508,9187448.0%
      Source: The Northwest, Mesa, AZ 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.