Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 33°F | 47°F | 39°F | 7.4" |
February | 33°F | 51°F | 41°F | 4.9" |
March | 36°F | 55°F | 44°F | 6.1" |
April | 38°F | 60°F | 48°F | 4.0" |
May | 44°F | 67°F | 55°F | 4.5" |
June | 49°F | 72°F | 60°F | 3.0" |
July | 52°F | 80°F | 65°F | 1.5" |
August | 52°F | 80°F | 65°F | 3.4" |
September | 48°F | 73°F | 60°F | 4.4" |
October | 42°F | 62°F | 51°F | 6.3" |
November | 36°F | 52°F | 44°F | 8.2" |
December | 32°F | 46°F | 38°F | 6.9" |
Index | Steilacoom | Washington | National |
Air quality index | 30 | 36 | 42 |
Pollution index | 6,704,330 | 4,541,850 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 323 |
Days with moderate air quality | 42 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.003% |
Benzene | 0.100% |
Carbon Tetrachloride | 0.004% |
Lead | 0.030% |
Mercury | 0.003% |
City | Population | Air Quality Index | National Avg. |
Canterwood, WA | 3,070 | 18 | 64.0% |
Maplewood, WA | 5,135 | 18 | 64.0% |
Grapeview, WA | 703 | 18 | 64.0% |
Vaughn, WA | 1,052 | 18 | 64.0% |
Raft Island, WA | 416 | 18 | 64.0% |
Steilacoom, WA | 6,366 | 30 | 40.0% |
City | Population | Air Quality Index | National Avg. |
Fowler, CA | 6,366 | 60 | 20.0% |
Gray, LA | 6,366 | 41 | 18.0% |
Hamlet, NC | 6,366 | 30 | 40.0% |
Brunswick, MD | 6,364 | 40 | 20.0% |
Air Force Academy, CO | 6,368 | 45 | 10.0% |
Steilacoom, WA | 6,366 | 30 | 40.0% |