Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 35°F | 48°F | 42°F | 5.6" |
February | 37°F | 51°F | 43°F | 3.7" |
March | 39°F | 55°F | 46°F | 5.1" |
April | 42°F | 60°F | 50°F | 3.2" |
May | 47°F | 68°F | 56°F | 2.2" |
June | 52°F | 72°F | 61°F | 1.5" |
July | 56°F | 80°F | 66°F | 0.6" |
August | 56°F | 80°F | 66°F | 1.1" |
September | 53°F | 73°F | 61°F | 1.9" |
October | 46°F | 62°F | 53°F | 4.5" |
November | 40°F | 53°F | 46°F | 7.1" |
December | 35°F | 47°F | 41°F | 6.1" |
Index | Federal Way | Washington | National |
Air quality index | 45 | 36 | 42 |
Pollution index | 17,693,800 | 4,541,850 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 236 |
Days with moderate air quality | 127 |
Days w/ poor A.Q. for sensitive groups | 2 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.010% |
Benzene | 0.300% |
Carbon Tetrachloride | 0.050% |
Lead | 0.110% |
Mercury | 0.020% |
City | Population | Air Quality Index | National Avg. |
Dash Point, WA | 1,008 | 18 | 64.0% |
Burley, WA | 2,515 | 18 | 64.0% |
Purdy, WA | 1,531 | 18 | 64.0% |
Browns Point, WA | 961 | 18 | 64.0% |
East Port Orchard, WA | 5,069 | 18 | 64.0% |
Federal Way, WA | 96,812 | 45 | 10.0% |
City | Population | Air Quality Index | National Avg. |
Nampa, ID | 96,825 | 36 | 28.0% |
Albany, NY | 96,860 | 37 | 26.0% |
Erie, PA | 96,616 | 36 | 28.0% |
Bend, OR | 97,032 | 20 | 60.0% |
Lawrence, KS | 97,348 | 41 | 18.0% |
Federal Way, WA | 96,812 | 45 | 10.0% |