TODAY JUL24
TEMPERATURE68
HUMIDITY53
PRESSURE30.11
WIND COND.320 6.9
  • 7957Wed
  • 8559Thu
  • 8361Fri
  • 8059Sat
  • 8259Sun
daynightWeather update from Pearson Airfield at
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Portsmith 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"

Did you know?

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

Compare Portland, OR Weather To Other Cities

Portsmith 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.
IndexPortsmithPortlandOregon
Air quality index383832
Pollution index3,247,5801,899,4105,374,527

Portsmith air quality information

MeasurementTotal
Days measured365
Days with good air quality241
Days with moderate air quality108
Days w/ poor A.Q. for sensitive groups12
Days with unhealthy air quality4

Portsmith air quality information

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

Average monthly Portsmith temperature with heat index

Portsmith monthly precipitation with daily maximum

Portsmith monthly snow depth with daily maximum

Portsmith monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Aloha, OR54,9083824%
Cedar Hills, OR8,1353824%
Fairview, OR9,2153824%
Happy Valley, OR17,4743824%
King City, OR3,5993824%
Portland, OR620,5893824%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Baltimore, MD621,000468%
Oklahoma City, OK620,015476%
Las Vegas, NV613,295548%
Louisville, KY611,5735510%
Milwaukee, WI598,6724510%
Portland, OR620,5893824%
Source: The Portsmith, 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.
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