Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 34°F | 46°F | 39°F | 4.4" |
February | 36°F | 52°F | 43°F | 4.5" |
March | 40°F | 60°F | 49°F | 6.7" |
April | 42°F | 61°F | 51°F | 4.9" |
May | 48°F | 70°F | 58°F | 4.0" |
June | 51°F | 72°F | 61°F | 4.2" |
July | 57°F | 84°F | 69°F | 1.7" |
August | 54°F | 84°F | 67°F | 5.0" |
September | 48°F | 75°F | 60°F | 3.9" |
October | 47°F | 63°F | 54°F | 5.4" |
November | 38°F | 51°F | 44°F | 8.4" |
December | 35°F | 45°F | 39°F | 11.5" |
Index | Washougal | Washington | National |
Air quality index | 38 | 36 | 42 |
Pollution index | 24,235,400 | 4,541,850 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 285 |
Days with moderate air quality | 77 |
Days w/ poor A.Q. for sensitive groups | 3 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.020% |
Benzene | 0.250% |
Carbon Tetrachloride | 0.060% |
Lead | 0.160% |
Mercury | 0.090% |
City | Population | Air Quality Index | National Avg. |
West Linn, OR | 26,764 | 38 | 24.0% |
Dollars Corner, WA | 684 | 38 | 24.0% |
Hazel Dell, WA | 21,830 | 38 | 24.0% |
Troutdale, OR | 16,433 | 38 | 24.0% |
Camas, WA | 24,043 | 38 | 24.0% |
Washougal, WA | 15,927 | 38 | 24.0% |
City | Population | Air Quality Index | National Avg. |
Easthampton Town, MA | 15,930 | 40 | 20.0% |
Hibbing, MN | 15,923 | 35 | 30.0% |
Indianola, IA | 15,921 | 39 | 22.0% |
Dyer, IN | 15,933 | 55 | 10.0% |
New Haven, IN | 15,934 | 45 | 10.0% |
Washougal, WA | 15,927 | 38 | 24.0% |