Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 33°F | 44°F | 38°F | 6.6" |
February | 33°F | 45°F | 38°F | 6.4" |
March | 33°F | 47°F | 39°F | 6.7" |
April | 35°F | 53°F | 42°F | 3.3" |
May | 41°F | 63°F | 49°F | 2.2" |
June | 46°F | 69°F | 55°F | 1.3" |
July | 54°F | 78°F | 64°F | 0.3" |
August | 55°F | 79°F | 65°F | 0.2" |
September | 51°F | 72°F | 59°F | 1.0" |
October | 44°F | 59°F | 50°F | 3.8" |
November | 36°F | 47°F | 41°F | 6.1" |
December | 31°F | 42°F | 36°F | 8.9" |
Index | Selma | Oregon | National |
Air quality index | 26 | 32 | 42 |
Pollution index | 13,842,600 | 7,156,356 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 283 |
Days with moderate air quality | 77 |
Days w/ poor A.Q. for sensitive groups | 3 |
Days with unhealthy air quality | 2 |
Pollutant | Total |
Arsenic | 0.020% |
Benzene | 0.210% |
Carbon Tetrachloride | 0.030% |
Lead | 0.030% |
Mercury | 0.020% |
City | Population | Air Quality Index | National Avg. |
O'Brien, OR | 639 | 26 | 48.0% |
Grants Pass, OR | 37,938 | 26 | 48.0% |
Cave Junction, OR | 2,153 | 26 | 48.0% |
New Hope, OR | 1,236 | 26 | 48.0% |
Kerby, OR | 282 | 26 | 48.0% |
Selma, OR | 913 | 26 | 48.0% |
City | Population | Air Quality Index | National Avg. |
Okoboji, IA | 913 | 32 | 36.0% |
Little Rock, MN | 913 | 33 | 34.0% |
Humboldt, NE | 913 | 31 | 38.0% |
Roosevelt, NJ | 913 | 41 | 18.0% |
Unadilla, NY | 913 | 27 | 46.0% |
Selma, OR | 913 | 26 | 48.0% |