Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 24°F | 45°F | 33°F | 0.9" |
February | 24°F | 50°F | 35°F | 0.4" |
March | 25°F | 55°F | 39°F | 0.6" |
April | 29°F | 60°F | 44°F | 1.0" |
May | 37°F | 69°F | 53°F | 0.9" |
June | 41°F | 76°F | 59°F | 0.9" |
July | 47°F | 90°F | 70°F | 0.1" |
August | 45°F | 87°F | 67°F | 0.9" |
September | 37°F | 79°F | 58°F | 0.3" |
October | 32°F | 64°F | 46°F | 0.9" |
November | 28°F | 52°F | 39°F | 0.9" |
December | 19°F | 41°F | 30°F | 0.9" |
Index | Prineville | Oregon | National |
Air quality index | 23 | 32 | 42 |
Pollution index | 77,038 | 7,156,356 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 296 |
Days with moderate air quality | 68 |
Days w/ poor A.Q. for sensitive groups | 1 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.000% |
Benzene | 0.002% |
Carbon Tetrachloride | 0.000% |
Lead | 0.001% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Prineville, OR | 10,429 | 23 | 54.0% |
City | Population | Air Quality Index | National Avg. |
Silverton, OR | 10,426 | 32 | 36.0% |
Union City, TN | 10,426 | 26 | 48.0% |
Newcastle, OK | 10,425 | 48 | 4.0% |
Exeter, CA | 10,433 | 66 | 32.0% |
Whitecourt, AB | 10,433 | n/a | |
Prineville, OR | 10,429 | 23 | 54.0% |