Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 32°F | 47°F | 38°F | 4.1" |
February | 33°F | 53°F | 42°F | 3.0" |
March | 38°F | 60°F | 48°F | 4.8" |
April | 39°F | 61°F | 50°F | 2.9" |
May | 45°F | 70°F | 57°F | 4.8" |
June | 48°F | 72°F | 59°F | 2.1" |
July | 53°F | 83°F | 68°F | 1.3" |
August | 51°F | 84°F | 67°F | 1.2" |
September | 44°F | 75°F | 59°F | 2.8" |
October | 42°F | 61°F | 50°F | 3.8" |
November | 33°F | 52°F | 42°F | 7.5" |
December | 33°F | 45°F | 39°F | 11.3" |
Index | Forest Grove | Oregon | National |
Air quality index | 38 | 32 | 42 |
Pollution index | 15,149,900 | 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 | 0.010% |
Benzene | 0.160% |
Carbon Tetrachloride | 0.030% |
Lead | 0.080% |
Mercury | 0.010% |
City | Population | Air Quality Index | National Avg. |
Banks, OR | 1,897 | 38 | 24.0% |
Cornelius, OR | 12,767 | 38 | 24.0% |
North Plains, OR | 2,706 | 38 | 24.0% |
Bethany, OR | 28,047 | 38 | 24.0% |
Gaston, OR | 526 | 38 | 24.0% |
Forest Grove, OR | 24,847 | 38 | 24.0% |
City | Population | Air Quality Index | National Avg. |
Denison, TX | 24,851 | 325 | 550.0% |
North Laurel, MD | 24,856 | 46 | 8.0% |
Burlington, IA | 24,858 | 29 | 42.0% |
Bainbridge Island, WA | 24,859 | 45 | 10.0% |
Ardmore, OK | 24,834 | 43 | 14.0% |
Forest Grove, OR | 24,847 | 38 | 24.0% |