Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 31°F | 54°F | 41°F | 2.2" |
February | 35°F | 57°F | 45°F | 2.0" |
March | 45°F | 68°F | 55°F | 3.6" |
April | 52°F | 76°F | 63°F | 5.6" |
May | 60°F | 81°F | 69°F | 7.1" |
June | 70°F | 90°F | 79°F | 4.7" |
July | 72°F | 94°F | 82°F | 4.6" |
August | 72°F | 94°F | 82°F | 3.6" |
September | 64°F | 88°F | 74°F | 3.1" |
October | 52°F | 77°F | 63°F | 4.1" |
November | 43°F | 66°F | 53°F | 2.7" |
December | 33°F | 55°F | 43°F | 2.8" |
Index | Calvin | Oklahoma | National |
Air quality index | 43 | 55 | 42 |
Pollution index | 246,474 | 1,271,533 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 272 |
Days with moderate air quality | 91 |
Days w/ poor A.Q. for sensitive groups | 2 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.000% |
Benzene | 0.003% |
Carbon Tetrachloride | 0.001% |
Lead | 0.001% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Wewoka, OK | 3,271 | 36 | 28.0% |
Spaulding, OK | 100 | 36 | 28.0% |
Holdenville, OK | 5,662 | 36 | 28.0% |
Lamar, OK | 158 | 43 | 14.0% |
Atwood, OK | 93 | 43 | 14.0% |
Calvin, OK | 357 | 43 | 14.0% |
City | Population | Air Quality Index | National Avg. |
Shonto, AZ | 357 | 45 | 10.0% |
Chacra, CO | 357 | 44 | 12.0% |
City of Creede, CO | 357 | 44 | 12.0% |
La Crosse, FL | 357 | 35 | 30.0% |
Millbrook, IL | 357 | 0 | 100.0% |
Calvin, OK | 357 | 43 | 14.0% |