Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 28°F | 50°F | 37°F | 3.0" |
February | 28°F | 52°F | 39°F | 2.3" |
March | 37°F | 62°F | 48°F | 3.4" |
April | 45°F | 73°F | 59°F | 3.8" |
May | 54°F | 79°F | 66°F | 4.2" |
June | 63°F | 87°F | 74°F | 5.0" |
July | 66°F | 89°F | 77°F | 4.8" |
August | 65°F | 88°F | 76°F | 3.7" |
September | 58°F | 82°F | 69°F | 4.0" |
October | 47°F | 72°F | 59°F | 4.2" |
November | 36°F | 62°F | 48°F | 3.2" |
December | 31°F | 53°F | 41°F | 3.7" |
Index | Salem | Virginia | National |
Air quality index | 38 | 58 | 42 |
Pollution index | 884,118 | 1,561,881 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 326 |
Days with moderate air quality | 39 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.060% |
Benzene | 0.010% |
Carbon Tetrachloride | 0.002% |
Lead | 0.020% |
Mercury | 0.002% |
City | Population | Air Quality Index | National Avg. |
Glenvar, VA | 821 | 38 | 24.0% |
Cave Spring, VA | 25,193 | 38 | 24.0% |
Hollins, VA | 15,113 | 38 | 24.0% |
Troutville, VA | 405 | 38 | 24.0% |
Cloverdale, VA | 3,193 | 38 | 24.0% |
Salem, VA | 25,290 | 38 | 24.0% |
City | Population | Air Quality Index | National Avg. |
Clinton, IA | 25,290 | 42 | 16.0% |
Mount Pleasant, MI | 25,290 | 26 | 48.0% |
Prince Edward County, ON | 25,289 | n/a | |
El Cerrito, CA | 25,280 | 40 | 20.0% |
Franklin, IN | 25,276 | 54 | 8.0% |
Salem, VA | 25,290 | 38 | 24.0% |