Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 5°F | 31°F | 17°F | 0.2" |
February | 12°F | 37°F | 23°F | 0.1" |
March | 26°F | 55°F | 39°F | 0.2" |
April | 33°F | 62°F | 47°F | 0.4" |
May | 43°F | 72°F | 56°F | 1.4" |
June | 52°F | 85°F | 68°F | 0.8" |
July | 59°F | 94°F | 77°F | 0.2" |
August | 55°F | 91°F | 73°F | 0.3" |
September | 45°F | 80°F | 62°F | 0.8" |
October | 34°F | 63°F | 47°F | 0.8" |
November | 20°F | 47°F | 32°F | 0.2" |
December | 6°F | 30°F | 17°F | 0.1" |
Index | Shell | Wyoming | National |
Air quality index | 39 | 39 | 42 |
Pollution index | 554,734 | 1,779,975 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 325 |
Days with moderate air quality | 40 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.000% |
Benzene | 0.005% |
Carbon Tetrachloride | 0.001% |
Lead | 0.001% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Greybull, WY | 2,145 | 39 | 22.0% |
Basin, WY | 1,421 | 39 | 22.0% |
Shell, WY | 90 | 39 | 22.0% |
City | Population | Air Quality Index | National Avg. |
Utting, AZ | 90 | 13 | 74.0% |
C-Road, CA | 90 | 44 | 12.0% |
Darwin, CA | 90 | 15 | 70.0% |
Tarrytown, GA | 90 | 26 | 48.0% |
Odin, KS | 90 | 40 | 20.0% |
Shell, WY | 90 | 39 | 22.0% |