Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 35°F | 45°F | 40°F | 1.2" |
February | 37°F | 48°F | 41°F | 2.3" |
March | 40°F | 51°F | 45°F | 2.5" |
April | 42°F | 56°F | 48°F | 0.6" |
May | 46°F | 61°F | 53°F | 1.2" |
June | 50°F | 66°F | 57°F | 0.9" |
July | 52°F | 71°F | 60°F | 0.0" |
August | 52°F | 71°F | 61°F | 0.0" |
September | 50°F | 66°F | 57°F | 0.5" |
October | 45°F | 57°F | 51°F | 2.9" |
November | 40°F | 50°F | 44°F | 2.4" |
December | 35°F | 44°F | 39°F | 1.4" |
Index | Mount Vernon | Washington | National |
Air quality index | 24 | 36 | 42 |
Pollution index | 15,778,900 | 4,541,850 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 361 |
Days with moderate air quality | 4 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.010% |
Benzene | 0.270% |
Carbon Tetrachloride | 0.040% |
Lead | 0.160% |
Mercury | 0.003% |
City | Population | Air Quality Index | National Avg. |
Arlington Heights, WA | 2,463 | 24 | 52.0% |
Anacortes, WA | 17,231 | 24 | 52.0% |
Big Lake, WA | 2,251 | 24 | 52.0% |
Sedro-Woolley, WA | 11,919 | 24 | 52.0% |
Edison, WA | 264 | 24 | 52.0% |
Mount Vernon, WA | 35,502 | 24 | 52.0% |
City | Population | Air Quality Index | National Avg. |
West Hollywood, CA | 35,506 | 72 | 44.0% |
Inver Grove Heights, MN | 35,492 | 46 | 8.0% |
Oildale, CA | 35,520 | 67 | 34.0% |
Wildwood, MO | 35,476 | 54 | 8.0% |
Oswego, IL | 35,470 | 0 | 100.0% |
Mount Vernon, WA | 35,502 | 24 | 52.0% |