Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 24°F | 32°F | 27°F | 7.2" |
February | 26°F | 38°F | 31°F | 2.7" |
March | 31°F | 49°F | 38°F | 3.0" |
April | 36°F | 60°F | 46°F | 1.9" |
May | 44°F | 71°F | 56°F | 2.0" |
June | 49°F | 76°F | 61°F | 2.2" |
July | 55°F | 89°F | 70°F | 1.0" |
August | 54°F | 88°F | 69°F | 0.7" |
September | 47°F | 75°F | 59°F | 1.1" |
October | 38°F | 56°F | 45°F | 2.7" |
November | 31°F | 41°F | 35°F | 3.7" |
December | 23°F | 31°F | 26°F | 6.5" |
Index | Colville | Washington | National |
Air quality index | 43 | 36 | 42 |
Pollution index | 2,800,290 | 4,541,850 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 252 |
Days with moderate air quality | 111 |
Days w/ poor A.Q. for sensitive groups | 2 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.020% |
Benzene | 0.040% |
Carbon Tetrachloride | 0.004% |
Lead | 0.020% |
Mercury | 0.001% |
City | Population | Air Quality Index | National Avg. |
Marcus, WA | 181 | 43 | 14.0% |
Barney's Junction, WA | 169 | 43 | 14.0% |
Addy, WA | 40 | 43 | 14.0% |
Boyds, WA | 52 | 43 | 14.0% |
Kettle Falls, WA | 1,594 | 43 | 14.0% |
Colville, WA | 4,786 | 43 | 14.0% |
City | Population | Air Quality Index | National Avg. |
East Merrimack, NH | 4,786 | 37 | 26.0% |
Farmington, ME | 4,785 | 28 | 44.0% |
Nelsonville, OH | 4,785 | 25 | 50.0% |
North Westport, MA | 4,787 | 44 | 12.0% |
Stafford Springs, CT | 4,784 | 40 | 20.0% |
Colville, WA | 4,786 | 43 | 14.0% |