| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 38°F | 58°F | 47°F | 12.7" |
| February | 41°F | 61°F | 50°F | 7.9" |
| March | 49°F | 71°F | 59°F | 9.1" |
| April | 56°F | 78°F | 66°F | 10.8" |
| May | 64°F | 83°F | 73°F | 13.1" |
| June | 72°F | 91°F | 81°F | 7.9" |
| July | 74°F | 93°F | 82°F | 8.1" |
| August | 74°F | 94°F | 83°F | 12.4" |
| September | 67°F | 88°F | 77°F | 3.0" |
| October | 56°F | 79°F | 66°F | 8.0" |
| November | 48°F | 68°F | 57°F | 13.1" |
| December | 40°F | 60°F | 49°F | 11.8" |
| Index | Avinger | Texas | National |
| Air quality index | 38 | 52 | 42 |
| Pollution index | 2,304,530 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 364 |
| Days with good air quality | 296 |
| Days with moderate air quality | 67 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.900% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.040% |
| Mercury | 1.100% |
| City | Population | Air Quality Index | National Avg. |
| Daingerfield, TX | 2,679 | 37 | 26.0% |
| Hughes Springs, TX | 1,534 | 37 | 26.0% |
| Lone Star, TX | 1,993 | 37 | 26.0% |
| Ore City, TX | 1,034 | 37 | 26.0% |
| Jefferson, TX | 2,531 | 38 | 24.0% |
| Avinger, TX | 296 | 38 | 24.0% |
| City | Population | Air Quality Index | National Avg. |
| St. Joe, AR | 296 | 36 | 28.0% |
| Ionia, IA | 296 | 39 | 22.0% |
| Modale, IA | 296 | 40 | 20.0% |
| Alma, IL | 296 | 43 | 14.0% |
| Fillmore, IL | 296 | 40 | 20.0% |
| Avinger, TX | 296 | 38 | 24.0% |
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