| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 42°F | 63°F | 51°F | 3.1" |
| February | 45°F | 66°F | 54°F | 3.1" |
| March | 52°F | 74°F | 62°F | 4.8" |
| April | 59°F | 80°F | 68°F | 3.3" |
| May | 67°F | 87°F | 76°F | 3.4" |
| June | 74°F | 94°F | 83°F | 3.8" |
| July | 75°F | 95°F | 84°F | 3.0" |
| August | 76°F | 96°F | 84°F | 3.5" |
| September | 70°F | 91°F | 79°F | 4.1" |
| October | 60°F | 82°F | 70°F | 6.7" |
| November | 52°F | 74°F | 61°F | 2.7" |
| December | 43°F | 64°F | 52°F | 3.2" |
| Index | Iola | Texas | National |
| Air quality index | 52 | 52 | 42 |
| Pollution index | 483,161 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 171 |
| Days with moderate air quality | 163 |
| Days w/ poor A.Q. for sensitive groups | 26 |
| Days with unhealthy air quality | 4 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Wixon Valley, TX | 154 | 38 | 24.0% |
| Kurten, TX | 427 | 38 | 24.0% |
| Madisonville, TX | 4,740 | 41 | 18.0% |
| Bedias, TX | 359 | 52 | 4.0% |
| Iola, TX | 164 | 52 | 4.0% |
| City | Population | Air Quality Index | National Avg. |
| Akhiok, AK | 164 | 31 | 38.0% |
| Seldovia, AK | 164 | 31 | 38.0% |
| Calpine, CA | 164 | 44 | 12.0% |
| Capulin, CO | 164 | 15 | 70.0% |
| Ramah, CO | 164 | 45 | 10.0% |
| Iola, TX | 164 | 52 | 4.0% |
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