| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 47°F | 65°F | 55°F | 3.7" |
| February | 49°F | 68°F | 57°F | 2.9" |
| March | 56°F | 74°F | 64°F | 3.6" |
| April | 62°F | 79°F | 70°F | 5.6" |
| May | 70°F | 87°F | 77°F | 4.0" |
| June | 75°F | 92°F | 83°F | 6.0" |
| July | 76°F | 92°F | 83°F | 9.1" |
| August | 77°F | 93°F | 84°F | 5.1" |
| September | 73°F | 89°F | 80°F | 6.1" |
| October | 64°F | 83°F | 72°F | 10.0" |
| November | 55°F | 75°F | 64°F | 3.7" |
| December | 47°F | 66°F | 56°F | 4.0" |
| Index | Southwest | Houston | Texas |
| Air quality index | 52 | 52 | 52 |
| Pollution index | 701,652 | 2,906,860 | 2,009,300 |
| 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 | 0.003% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.004% |
| Lead | 0.001% |
| Mercury | 0.002% |
| City | Population | Air Quality Index | National Avg. |
| Thompsons, TX | 292 | 52 | 4.0% |
| Hilshire Village, TX | 893 | 52 | 4.0% |
| Brookside Village, TX | 1,429 | 52 | 4.0% |
| Galena Park, TX | 10,848 | 52 | 4.0% |
| Manvel, TX | 11,432 | 52 | 4.0% |
| Houston, TX | 2,313,238 | 52 | 4.0% |
| City | Population | Air Quality Index | National Avg. |
| Chicago, IL | 2,699,347 | 55 | 10.0% |
| Montréal, QC | 1,811,008 | n/a | |
| Phoenix, AZ | 1,658,422 | 74 | 48.0% |
| Toronto, ON | 3,013,752 | n/a | |
| Philadelphia, PA | 1,581,531 | 51 | 2.0% |
| Houston, TX | 2,313,238 | 52 | 4.0% |
Here are the best places to live in Texas
See the best places to live in Houston
Check out the 10 most dangerous cities in Texas
These are the 10 cheapest cities in Texas