Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 30°F | 54°F | 40°F | 2.4" |
February | 33°F | 56°F | 43°F | 5.0" |
March | 43°F | 68°F | 54°F | 4.7" |
April | 51°F | 75°F | 62°F | 8.7" |
May | 59°F | 80°F | 68°F | 12.5" |
June | 69°F | 90°F | 79°F | 8.0" |
July | 71°F | 95°F | 82°F | 7.7" |
August | 70°F | 94°F | 81°F | 7.9" |
September | 62°F | 86°F | 73°F | 7.9" |
October | 51°F | 76°F | 62°F | 11.3" |
November | 41°F | 65°F | 52°F | 6.8" |
December | 32°F | 53°F | 41°F | 9.8" |
Index | Winchester | Oklahoma | National |
Air quality index | 45 | 55 | 42 |
Pollution index | 14,334,000 | 1,271,533 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 249 |
Days with moderate air quality | 114 |
Days w/ poor A.Q. for sensitive groups | 2 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.010% |
Benzene | 0.190% |
Carbon Tetrachloride | 0.040% |
Lead | 0.170% |
Mercury | 0.090% |
City | Population | Air Quality Index | National Avg. |
Okmulgee, OK | 11,768 | 5 | 90.0% |
Morris, OK | 1,739 | 5 | 90.0% |
Kellyville, OK | 1,179 | 45 | 10.0% |
Beggs, OK | 1,377 | 45 | 10.0% |
Kiefer, OK | 2,510 | 45 | 10.0% |
Winchester, OK | 692 | 45 | 10.0% |
City | Population | Air Quality Index | National Avg. |
Arivaca, AZ | 692 | 31 | 38.0% |
Aroma Park, IL | 692 | 55 | 10.0% |
Union, LA | 692 | 45 | 10.0% |
Camden, MI | 692 | 39 | 22.0% |
Stewartsville, MO | 692 | 43 | 14.0% |
Winchester, OK | 692 | 45 | 10.0% |