Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 8°F | 32°F | 19°F | 0.6" |
February | 10°F | 36°F | 22°F | 0.4" |
March | 20°F | 49°F | 33°F | 0.8" |
April | 29°F | 61°F | 44°F | 1.3" |
May | 38°F | 70°F | 54°F | 2.0" |
June | 46°F | 79°F | 63°F | 2.4" |
July | 53°F | 90°F | 72°F | 1.4" |
August | 50°F | 88°F | 68°F | 1.0" |
September | 41°F | 77°F | 58°F | 1.2" |
October | 31°F | 62°F | 44°F | 1.0" |
November | 20°F | 46°F | 32°F | 0.6" |
December | 7°F | 31°F | 18°F | 0.7" |
Index | Rocky Boy's Agency | Montana | National |
Air quality index | 21 | 34 | 42 |
Pollution index | 232,374 | 834,473 | 2,726,193 |
Measurement | Total |
Days measured | 363 |
Days with good air quality | 350 |
Days with moderate air quality | 12 |
Days w/ poor A.Q. for sensitive groups | 1 |
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. |
Rocky Boy West, MT | 836 | 21 | 58.0% |
Box Elder, MT | 57 | 21 | 58.0% |
St. Pierre, MT | 357 | 21 | 58.0% |
Sangrey, MT | 418 | 21 | 58.0% |
Azure, MT | 431 | 21 | 58.0% |
Rocky Boy's Agency, MT | 353 | 21 | 58.0% |
City | Population | Air Quality Index | National Avg. |
Humphrey, AR | 353 | 45 | 10.0% |
Coleville, CA | 353 | 13 | 74.0% |
Atalissa, IA | 353 | 32 | 36.0% |
Rock Island Arsenal, IL | 353 | 46 | 8.0% |
Earl Park, IN | 353 | 42 | 16.0% |
Rocky Boy's Agency, MT | 353 | 21 | 58.0% |