| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 27°F | 53°F | 39°F | 1.5" |
| February | 30°F | 57°F | 42°F | 1.8" |
| March | 41°F | 68°F | 53°F | 3.1" |
| April | 49°F | 76°F | 62°F | 5.1" |
| May | 58°F | 82°F | 70°F | 6.1" |
| June | 69°F | 91°F | 80°F | 4.8" |
| July | 72°F | 96°F | 84°F | 4.1" |
| August | 71°F | 95°F | 82°F | 4.1" |
| September | 62°F | 88°F | 74°F | 4.1" |
| October | 50°F | 77°F | 63°F | 3.5" |
| November | 39°F | 66°F | 52°F | 2.5" |
| December | 29°F | 53°F | 40°F | 2.5" |
| Index | Chouteau | Oklahoma | National |
| Air quality index | 36 | 55 | 42 |
| Pollution index | 1,549,330 | 1,271,533 | 2,726,193 |
| Measurement | Total |
| Days measured | 291 |
| Days with good air quality | 269 |
| Days with moderate air quality | 22 |
| Days w/ poor A.Q. for sensitive groups | |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.230% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.070% |
| Mercury | 0.210% |
| City | Population | Air Quality Index | National Avg. |
| Mazie, OK | 83 | 5 | 90.0% |
| Locust Grove, OK | 1,540 | 36 | 28.0% |
| Sams Corner, OK | 194 | 36 | 28.0% |
| Peggs, OK | 1,215 | 36 | 28.0% |
| Pryor Creek, OK | 9,417 | 36 | 28.0% |
| Chouteau, OK | 2,137 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Baldwinville, MA | 2,137 | 34 | 32.0% |
| Churchville, NY | 2,137 | 37 | 26.0% |
| Plainfield Village, CT | 2,136 | 37 | 26.0% |
| Spring Park, MN | 2,136 | 46 | 8.0% |
| Lisbon, IA | 2,138 | 39 | 22.0% |
| Chouteau, OK | 2,137 | 36 | 28.0% |
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