| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 36°F | 59°F | 46°F | 3.2" |
| February | 41°F | 64°F | 50°F | 1.9" |
| March | 49°F | 71°F | 59°F | 2.6" |
| April | 56°F | 78°F | 66°F | 3.4" |
| May | 63°F | 84°F | 73°F | 4.4" |
| June | 71°F | 92°F | 81°F | 3.2" |
| July | 74°F | 95°F | 84°F | 1.9" |
| August | 74°F | 97°F | 85°F | 1.9" |
| September | 68°F | 90°F | 78°F | 3.1" |
| October | 57°F | 81°F | 68°F | 4.1" |
| November | 48°F | 70°F | 58°F | 1.9" |
| December | 39°F | 60°F | 48°F | 1.8" |
| Index | Itasca | Texas | National |
| Air quality index | 41 | 52 | 42 |
| Pollution index | 3,706,540 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 275 |
| Days with moderate air quality | 80 |
| Days w/ poor A.Q. for sensitive groups | 7 |
| Days with unhealthy air quality | 3 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.040% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Coyote Flats, TX | 419 | 33 | 34.0% |
| Covington, TX | 311 | 33 | 34.0% |
| Grandview, TX | 2,051 | 33 | 34.0% |
| Blum, TX | 456 | 33 | 34.0% |
| Rio Vista, TX | 1,035 | 33 | 34.0% |
| Itasca, TX | 1,574 | 41 | 18.0% |
| City | Population | Air Quality Index | National Avg. |
| Baden, MD | 1,574 | 47 | 6.0% |
| Cornersville, TN | 1,574 | 31 | 38.0% |
| Holland, TX | 1,574 | 42 | 16.0% |
| Concord, AL | 1,575 | 53 | 6.0% |
| Taft, FL | 1,573 | 39 | 22.0% |
| Itasca, TX | 1,574 | 41 | 18.0% |
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