TODAY MAR05
TEMPERATURE55
HUMIDITY62
PRESSURE30.05
WIND COND.280 14.8
  • 4939Fri90%60%
  • 4938Sat40%40%
  • 5035Sun70%
  • 5136Mon
  • 5235Tue
daynightWeather update from Portland, Portland International Airport at

Key findings

  • The highest monthly average temperature in Hillsdale for August is 70 degrees
  • The lowest monthly average temperature in Hillsdale for December is 40 degrees
  • The most monthly precipitation in Hillsdale occurs in November with 6.2 inches
  • The air quality index in Hillsdale is 24% better than the national average
  • The pollution index in Hillsdale is 36% better than the national average

Compare Portland, OR Weather

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      Hillsdale 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"

      Hillsdale 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.
      IndexHillsdalePortlandOregon
      Air quality index383832
      Pollution index3,247,5801,899,4105,374,527

      Hillsdale 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

      Hillsdale air quality information

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

      Average monthly Hillsdale temperature with heat index

      Hillsdale monthly precipitation with daily maximum

      Hillsdale monthly snow depth with daily maximum

      Hillsdale monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Fairview, OR9,2153824%
      Wood Village, OR3,9963824%
      Beaverton, OR94,8653824%
      Gladstone, OR11,8503824%
      Lake Oswego, OR38,0653824%
      Portland, OR620,5893824%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Baltimore, MD621,000468%
      Oklahoma City, OK620,015484%
      Las Vegas, NV613,295548%
      Louisville, KY611,573492%
      Milwaukee, WI598,6724412%
      Portland, OR620,5893824%
      Source: The Hillsdale, 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.