| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 46°F | 66°F | 55°F | 3.8" |
| February | 50°F | 70°F | 59°F | 2.3" |
| March | 57°F | 75°F | 65°F | 4.0" |
| April | 63°F | 81°F | 71°F | 4.9" |
| May | 68°F | 86°F | 76°F | 7.1" |
| June | 75°F | 92°F | 83°F | 3.9" |
| July | 77°F | 94°F | 84°F | 4.0" |
| August | 77°F | 95°F | 85°F | 8.0" |
| September | 73°F | 90°F | 81°F | 4.6" |
| October | 64°F | 84°F | 73°F | 4.0" |
| November | 55°F | 75°F | 64°F | 3.6" |
| December | 49°F | 67°F | 57°F | 4.0" |
| Index | South Houston | Texas | National |
| Air quality index | 52 | 52 | 42 |
| Pollution index | 701,652 | 2,009,300 | 2,726,193 |
| 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 | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.003% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Arcola, TX | 2,541 | 52 | 4.0% |
| Galena Park, TX | 10,848 | 52 | 4.0% |
| Pearland, TX | 125,817 | 52 | 4.0% |
| Clear Lake Shores, TX | 1,371 | 52 | 4.0% |
| Friendswood, TX | 39,893 | 52 | 4.0% |
| South Houston, TX | 17,522 | 52 | 4.0% |
| City | Population | Air Quality Index | National Avg. |
| Kingsland, GA | 17,523 | 36 | 28.0% |
| Wailuku, HI | 17,523 | 15 | 70.0% |
| Martinsburg, WV | 17,517 | 40 | 20.0% |
| Centerville, UT | 17,527 | 51 | 2.0% |
| Anoka, MN | 17,512 | 46 | 8.0% |
| South Houston, TX | 17,522 | 52 | 4.0% |
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