Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 11°F | 35°F | 22°F | 0.3" |
February | 15°F | 39°F | 27°F | 0.4" |
March | 24°F | 51°F | 36°F | 0.9" |
April | 29°F | 59°F | 43°F | 1.7" |
May | 37°F | 67°F | 52°F | 2.2" |
June | 44°F | 78°F | 60°F | 2.7" |
July | 50°F | 90°F | 70°F | 0.8" |
August | 47°F | 87°F | 66°F | 1.2" |
September | 40°F | 77°F | 57°F | 1.0" |
October | 31°F | 61°F | 44°F | 1.3" |
November | 20°F | 44°F | 31°F | 1.0" |
December | 9°F | 32°F | 20°F | 0.5" |
Index | Four Corners | Montana | National |
Air quality index | 25 | 34 | 42 |
Pollution index | 293,782 | 834,473 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 337 |
Days with moderate air quality | 28 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.000% |
Benzene | 0.004% |
Carbon Tetrachloride | 0.000% |
Lead | 0.000% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Churchill, MT | 989 | 25 | 50.0% |
Manhattan, MT | 1,950 | 25 | 50.0% |
Bozeman, MT | 48,330 | 25 | 50.0% |
Gallatin Gateway, MT | 798 | 25 | 50.0% |
Springhill, MT | 198 | 25 | 50.0% |
Four Corners, MT | 4,859 | 25 | 50.0% |
City | Population | Air Quality Index | National Avg. |
Cave Springs, AR | 4,859 | 44 | 12.0% |
Shenandoah, IA | 4,859 | 40 | 20.0% |
Glendora, NJ | 4,858 | 51 | 2.0% |
Benson, AZ | 4,857 | 45 | 10.0% |
Denver City, TX | 4,857 | 45 | 10.0% |
Four Corners, MT | 4,859 | 25 | 50.0% |