Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 12°F | 36°F | 23°F | 0.7" |
February | 19°F | 44°F | 30°F | 0.6" |
March | 27°F | 57°F | 41°F | 0.6" |
April | 33°F | 64°F | 47°F | 1.0" |
May | 40°F | 74°F | 57°F | 1.2" |
June | 49°F | 89°F | 69°F | 0.4" |
July | 56°F | 92°F | 74°F | 1.2" |
August | 54°F | 89°F | 71°F | 1.1" |
September | 46°F | 81°F | 62°F | 1.4" |
October | 35°F | 66°F | 49°F | 1.3" |
November | 24°F | 53°F | 36°F | 0.6" |
December | 14°F | 37°F | 25°F | 0.8" |
Index | Silt | Colorado | National |
Air quality index | 44 | 38 | 42 |
Pollution index | 11,410,200 | 2,068,342 | 2,726,193 |
Measurement | Total |
Days measured | 364 |
Days with good air quality | 289 |
Days with moderate air quality | 75 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.050% |
Benzene | 0.080% |
Carbon Tetrachloride | 0.020% |
Lead | 0.380% |
Mercury | 0.590% |
City | Population | Air Quality Index | National Avg. |
Rifle, CO | 9,771 | 44 | 12.0% |
Chacra, CO | 357 | 44 | 12.0% |
New Castle, CO | 4,877 | 44 | 12.0% |
Silt, CO | 3,076 | 44 | 12.0% |
City | Population | Air Quality Index | National Avg. |
Kaunakakai, HI | 3,076 | 15 | 70.0% |
Nashville, IL | 3,076 | 43 | 14.0% |
McSherrystown, PA | 3,076 | 42 | 16.0% |
North Shore, VA | 3,075 | 38 | 24.0% |
Hampton, SC | 3,077 | 29 | 42.0% |
Silt, CO | 3,076 | 44 | 12.0% |