Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 27°F | 48°F | 37°F | 4.1" |
February | 28°F | 49°F | 37°F | 2.4" |
March | 35°F | 60°F | 47°F | 3.1" |
April | 43°F | 70°F | 56°F | 4.1" |
May | 52°F | 77°F | 64°F | 2.9" |
June | 61°F | 85°F | 72°F | 3.6" |
July | 64°F | 86°F | 74°F | 5.0" |
August | 64°F | 88°F | 75°F | 2.9" |
September | 57°F | 81°F | 68°F | 3.8" |
October | 45°F | 70°F | 56°F | 2.7" |
November | 34°F | 60°F | 46°F | 2.7" |
December | 30°F | 50°F | 39°F | 4.3" |
Index | Erwin | Tennessee | National |
Air quality index | 45 | 76 | 42 |
Pollution index | 457,681 | 2,454,916 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 236 |
Days with moderate air quality | 108 |
Days w/ poor A.Q. for sensitive groups | 21 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.000% |
Benzene | 0.010% |
Carbon Tetrachloride | 0.001% |
Lead | 0.000% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Bakersville, NC | 706 | 26 | 48.0% |
Johnson City, TN | 66,934 | 45 | 10.0% |
Banner Hill, TN | 1,396 | 45 | 10.0% |
Jonesborough, TN | 5,539 | 45 | 10.0% |
Unicoi, TN | 3,572 | 45 | 10.0% |
Erwin, TN | 5,910 | 45 | 10.0% |
City | Population | Air Quality Index | National Avg. |
Hampshire, IL | 5,909 | 42 | 16.0% |
South Hooksett, NH | 5,911 | 37 | 26.0% |
Progreso, TX | 5,908 | 42 | 16.0% |
Tay Valley, ON | 5,913 | n/a | |
Scituate, MA | 5,905 | 43 | 14.0% |
Erwin, TN | 5,910 | 45 | 10.0% |