Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 16°F | 34°F | 25°F | 0.9" |
February | 21°F | 40°F | 30°F | 1.0" |
March | 26°F | 51°F | 38°F | 1.0" |
April | 31°F | 60°F | 44°F | 1.1" |
May | 38°F | 69°F | 53°F | 1.4" |
June | 45°F | 78°F | 61°F | 2.0" |
July | 51°F | 91°F | 71°F | 0.6" |
August | 49°F | 88°F | 68°F | 0.7" |
September | 42°F | 77°F | 58°F | 1.0" |
October | 33°F | 59°F | 45°F | 1.2" |
November | 24°F | 44°F | 33°F | 1.4" |
December | 15°F | 32°F | 24°F | 1.2" |
Index | Westside | Missoula | Montana |
Air quality index | 40 | 40 | 34 |
Pollution index | 848,303 | 848,303 | 834,473 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 224 |
Days with moderate air quality | 137 |
Days w/ poor A.Q. for sensitive groups | 3 |
Days with unhealthy air quality | 1 |
Pollutant | Total |
Arsenic | 0.000% |
Benzene | 0.020% |
Carbon Tetrachloride | 0.002% |
Lead | 0.010% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Bonner-West Riverside, MT | 1,404 | 40 | 20.0% |
Huson, MT | 60 | 40 | 20.0% |
Wye, MT | 843 | 40 | 20.0% |
Carlton, MT | 612 | 40 | 20.0% |
East Missoula, MT | 2,214 | 40 | 20.0% |
Missoula, MT | 74,994 | 40 | 20.0% |
City | Population | Air Quality Index | National Avg. |
Union City, CA | 75,067 | 43 | 14.0% |
Arlington Heights, IL | 75,071 | 55 | 10.0% |
Milpitas, CA | 75,182 | 43 | 14.0% |
Missouri City, TX | 75,348 | 52 | 4.0% |
St. Joseph, MO | 75,369 | 43 | 14.0% |
Missoula, MT | 74,994 | 40 | 20.0% |