TODAY SEP20
TEMPERATURE59
HUMIDITY67
PRESSURE101860
WIND COND.350 9.4
  • 6648Fri
  • 7152Sat
  • 7158Sun
  • 7257Mon
  • 8260Tue
daynightWeather update from Portland, Portland International Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Southwest Hills for August is 69.5 degrees
  • The lowest monthly average temperature in Southwest Hills for December is 39.9 degrees
  • The most monthly precipitation in Southwest Hills occurs in November with 6.2 inches
  • The air quality index in Southwest Hills is 10% better than the national average
  • The pollution index in Southwest Hills is 19% worse than the national average

Compare Portland, OR Weather

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      Southwest Hills 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
      January34°F48°F40°F4.9"
      February36°F53°F43°F3.4"
      March39°F58°F48°F4.8"
      April42°F63°F52°F3.0"
      May48°F71°F58°F2.8"
      June53°F76°F63°F1.7"
      July57°F84°F69°F0.5"
      August58°F85°F70°F0.5"
      September53°F78°F64°F1.8"
      October47°F66°F55°F3.7"
      November40°F55°F47°F6.2"
      December34°F47°F40°F6.2"

      Southwest Hills 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.
      IndexSouthwest HillsPortlandOregon
      Air quality index383832
      Pollution index3,247,5801,899,4107,156,356

      Southwest Hills air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality285
      Days with moderate air quality77
      Days w/ poor A.Q. for sensitive groups3
      Days with unhealthy air quality0

      Southwest Hills air quality information

      PollutantTotal
      Arsenic0.003%
      Benzene0.020%
      Carbon Tetrachloride0.010%
      Lead0.010%
      Mercury0.002%

      Average monthly Southwest Hills temperature with heat index

      Southwest Hills monthly precipitation with daily maximum

      Southwest Hills monthly snow depth with daily maximum

      Southwest Hills monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Fairview, OR9,3823824.0%
      Camas, WA24,0433824.0%
      Durham, OR1,7643824.0%
      Jennings Lodge, OR8,5003824.0%
      Milwaukie, OR21,0863824.0%
      Portland, OR650,3803824.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Memphis, TN650,9104510.0%
      Oklahoma City, OK649,821484.0%
      Las Vegas, NV644,594548.0%
      Nashville, TN667,0704510.0%
      Detroit, MI672,3515612.0%
      Portland, OR650,3803824.0%
      Source: The Southwest Hills, Portland, OR 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.