Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 33°F | 47°F | 39°F | 4.8" |
February | 34°F | 52°F | 42°F | 3.8" |
March | 37°F | 56°F | 46°F | 4.5" |
April | 39°F | 62°F | 50°F | 2.5" |
May | 44°F | 70°F | 56°F | 2.1" |
June | 49°F | 75°F | 61°F | 1.3" |
July | 52°F | 84°F | 67°F | 0.3" |
August | 52°F | 85°F | 68°F | 0.4" |
September | 48°F | 78°F | 62°F | 1.4" |
October | 42°F | 65°F | 52°F | 3.6" |
November | 37°F | 53°F | 45°F | 5.8" |
December | 32°F | 45°F | 38°F | 6.0" |
Index | Cedar Mill | Oregon | National |
Air quality index | 38 | 32 | 42 |
Pollution index | 3,247,580 | 7,156,356 | 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 | 0.002% |
Benzene | 0.020% |
Carbon Tetrachloride | 0.500% |
Lead | 0.040% |
Mercury | 0.001% |
City | Population | Air Quality Index | National Avg. |
Brush Prairie, WA | 2,721 | 38 | 24.0% |
Bull Mountain, OR | 9,732 | 38 | 24.0% |
Gladstone, OR | 12,316 | 38 | 24.0% |
Lake Oswego, OR | 39,476 | 38 | 24.0% |
Oatfield, OR | 13,588 | 38 | 24.0% |
Cedar Mill, OR | 18,661 | 38 | 24.0% |
City | Population | Air Quality Index | National Avg. |
Petawawa, ON | 18,660 | n/a | |
Augusta, ME | 18,662 | 28 | 44.0% |
Homewood, IL | 18,656 | 55 | 10.0% |
Willimantic, CT | 18,669 | 33 | 34.0% |
Deux-Montagnes, QC | 18,650 | n/a | |
Cedar Mill, OR | 18,661 | 38 | 24.0% |