| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 43°F | 64°F | 52°F | 2.4" |
| February | 47°F | 69°F | 56°F | 2.1" |
| March | 54°F | 75°F | 63°F | 3.7" |
| April | 61°F | 81°F | 70°F | 4.7" |
| May | 67°F | 87°F | 76°F | 6.0" |
| June | 74°F | 93°F | 83°F | 2.9" |
| July | 75°F | 95°F | 84°F | 2.1" |
| August | 75°F | 97°F | 85°F | 5.4" |
| September | 71°F | 91°F | 79°F | 3.7" |
| October | 61°F | 84°F | 71°F | 2.7" |
| November | 53°F | 74°F | 62°F | 2.7" |
| December | 46°F | 66°F | 54°F | 1.9" |
| Index | Columbus | Texas | National |
| Air quality index | 31 | 52 | 42 |
| Pollution index | 1,591,270 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 341 |
| Days with good air quality | 319 |
| Days with moderate air quality | 22 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.030% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.010% |
| Mercury | 0.360% |
| City | Population | Air Quality Index | National Avg. |
| Glidden, TX | 547 | 31 | 38.0% |
| Weimar, TX | 2,838 | 31 | 38.0% |
| Fayetteville, TX | 283 | 44 | 12.0% |
| Eagle Lake, TX | 3,742 | 52 | 4.0% |
| Columbus, TX | 3,645 | 31 | 38.0% |
| City | Population | Air Quality Index | National Avg. |
| Gaylord, MI | 3,644 | 36 | 28.0% |
| Morris-Turnberry, ON | 3,644 | n/a | |
| Mono Vista, CA | 3,646 | 39 | 22.0% |
| Vandenberg AFB, CA | 3,646 | 46 | 8.0% |
| Blythewood, SC | 3,646 | 43 | 14.0% |
| Columbus, TX | 3,645 | 31 | 38.0% |
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