TODAY OCT16
TEMPERATURE57
HUMIDITY93
PRESSURE29.77
WIND COND.160 12.8
  • 5950Thu100%100%
  • 5750Fri90%100%
  • 5649Sat100%
  • 5752Sun
  • 6153Mon
daynightWeather update from Portland, Portland International Airport at
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Boise 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 Boise for August is 70 degrees.
  • The lowest monthly average temperature in Boise for December is 40 degrees.
  • The most monthly precipitation in Boise occurs in November with 6.2 inches.
  • The air quality index in Boise is 24% better than the national average.
  • The pollution index in Boise is 63% better than the national average.

Compare Portland, OR Weather To Other Cities

Boise 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.
IndexBoisePortlandOregon
Air quality index383832
Pollution index1,899,4101,899,4105,374,527

Boise 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

Boise air quality information

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

Average monthly Boise temperature with heat index

Boise monthly precipitation with daily maximum

Boise monthly snow depth with daily maximum

Boise monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Damascus, OR10,8423824%
Gladstone, OR11,8503824%
Johnson City, OR5473824%
Metzger, OR3,9673824%
Oatfield, OR13,5923824%
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 Boise, 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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