| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 34°F | 59°F | 45°F | 2.2" |
| February | 38°F | 63°F | 49°F | 1.8" |
| March | 47°F | 72°F | 59°F | 3.2" |
| April | 55°F | 79°F | 66°F | 4.4" |
| May | 62°F | 85°F | 73°F | 4.2" |
| June | 72°F | 94°F | 83°F | 4.4" |
| July | 75°F | 97°F | 86°F | 2.2" |
| August | 75°F | 99°F | 86°F | 2.4" |
| September | 66°F | 91°F | 78°F | 3.1" |
| October | 55°F | 81°F | 67°F | 3.5" |
| November | 45°F | 70°F | 57°F | 2.8" |
| December | 36°F | 59°F | 47°F | 2.2" |
| Index | Briar | Texas | National |
| Air quality index | 33 | 52 | 42 |
| Pollution index | 1,399,310 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 329 |
| Days with moderate air quality | 33 |
| Days w/ poor A.Q. for sensitive groups | 3 |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.003% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.010% |
| Mercury | 0.002% |
| City | Population | Air Quality Index | National Avg. |
| Paradise, TX | 520 | 33 | 34.0% |
| Lake Worth, TX | 5,060 | 33 | 34.0% |
| Pelican Bay, TX | 1,657 | 33 | 34.0% |
| River Oaks, TX | 7,830 | 33 | 34.0% |
| Aurora, TX | 1,539 | 33 | 34.0% |
| Briar, TX | 5,456 | 33 | 34.0% |
| City | Population | Air Quality Index | National Avg. |
| Sunset, UT | 5,456 | 45 | 10.0% |
| Peculiar, MO | 5,455 | 47 | 6.0% |
| Rincon Valley, AZ | 5,457 | 47 | 6.0% |
| Boulder Creek, CA | 5,454 | 35 | 30.0% |
| Bliss Corner, MA | 5,454 | 44 | 12.0% |
| Briar, TX | 5,456 | 33 | 34.0% |
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