Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 11°F | 35°F | 21°F | 0.4" |
February | 12°F | 37°F | 23°F | 0.4" |
March | 21°F | 46°F | 32°F | 0.5" |
April | 28°F | 57°F | 41°F | 1.4" |
May | 36°F | 66°F | 51°F | 1.8" |
June | 44°F | 74°F | 58°F | 3.4" |
July | 49°F | 84°F | 66°F | 1.0" |
August | 47°F | 82°F | 63°F | 1.2" |
September | 40°F | 72°F | 54°F | 1.5" |
October | 30°F | 59°F | 42°F | 1.4" |
November | 20°F | 45°F | 30°F | 1.6" |
December | 7°F | 30°F | 18°F | 0.9" |
Index | Sweet Grass | Montana | National |
Air quality index | 21 | 34 | 42 |
Pollution index | 217,967 | 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 | 0.003% |
Carbon Tetrachloride | 0.000% |
Lead | 0.003% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Sunburst, MT | 392 | 21 | 58.0% |
Sweet Grass, MT | 56 | 21 | 58.0% |
City | Population | Air Quality Index | National Avg. |
Hughes, AK | 56 | 38 | 24.0% |
Northway Junction, AK | 56 | 38 | 24.0% |
Shageluk, AK | 56 | 31 | 38.0% |
Beedeville, AR | 56 | 45 | 10.0% |
Aspen Springs, CA | 56 | 47 | 6.0% |
Sweet Grass, MT | 56 | 21 | 58.0% |