Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 36°F | 46°F | 41°F | 6.0" |
February | 38°F | 49°F | 43°F | 4.2" |
March | 39°F | 53°F | 45°F | 5.8" |
April | 42°F | 58°F | 49°F | 3.1" |
May | 47°F | 66°F | 55°F | 2.4" |
June | 51°F | 71°F | 59°F | 1.3" |
July | 55°F | 77°F | 64°F | 0.6" |
August | 55°F | 77°F | 65°F | 0.8" |
September | 52°F | 71°F | 60°F | 1.5" |
October | 47°F | 60°F | 52°F | 4.5" |
November | 41°F | 51°F | 46°F | 6.8" |
December | 36°F | 45°F | 40°F | 5.8" |
Index | Key Center | Washington | National |
Air quality index | 18 | 36 | 42 |
Pollution index | 1,081,430 | 4,541,850 | 2,726,193 |
Measurement | Total |
Days measured | 340 |
Days with good air quality | 338 |
Days with moderate air quality | 2 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.000% |
Benzene | 0.010% |
Carbon Tetrachloride | 0.000% |
Lead | 0.000% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Maplewood, WA | 5,135 | 18 | 64.0% |
Manchester, WA | 6,050 | 18 | 64.0% |
Allyn, WA | 2,504 | 18 | 64.0% |
Stansberry Lake, WA | 2,389 | 18 | 64.0% |
Artondale, WA | 14,024 | 18 | 64.0% |
Key Center, WA | 3,631 | 18 | 64.0% |
City | Population | Air Quality Index | National Avg. |
Wheatland, CA | 3,631 | 44 | 12.0% |
Thompsonville, PA | 3,631 | 56 | 12.0% |
Barnegat, NJ | 3,630 | 37 | 26.0% |
Horicon, WI | 3,630 | 40 | 20.0% |
Frackville, PA | 3,632 | 42 | 16.0% |
Key Center, WA | 3,631 | 18 | 64.0% |