| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 30°F | 53°F | 40°F | 3.1" |
| February | 32°F | 56°F | 43°F | 2.3" |
| March | 42°F | 67°F | 54°F | 5.0" |
| April | 50°F | 76°F | 62°F | 5.1" |
| May | 59°F | 82°F | 70°F | 5.6" |
| June | 68°F | 91°F | 79°F | 3.4" |
| July | 71°F | 94°F | 81°F | 4.1" |
| August | 70°F | 93°F | 81°F | 4.0" |
| September | 62°F | 86°F | 73°F | 3.4" |
| October | 51°F | 76°F | 62°F | 3.7" |
| November | 40°F | 65°F | 51°F | 4.1" |
| December | 33°F | 54°F | 42°F | 4.7" |
| Index | Houston | Arkansas | National |
| Air quality index | 45 | 38 | 42 |
| Pollution index | 410,477 | 1,487,822 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 235 |
| Days with moderate air quality | 130 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.003% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Bigelow, AR | 411 | 45 | 10.0% |
| Morrilton, AR | 6,638 | 45 | 10.0% |
| Plumerville, AR | 745 | 45 | 10.0% |
| Wooster, AR | 1,159 | 45 | 10.0% |
| Conway, AR | 66,776 | 45 | 10.0% |
| Houston, AR | 173 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Chickaloon, AK | 173 | 31 | 38.0% |
| Tanana, AK | 173 | 38 | 24.0% |
| Riverview, AL | 173 | 41 | 18.0% |
| Bodcaw, AR | 173 | 39 | 22.0% |
| Viola, DE | 173 | 42 | 16.0% |
| Houston, AR | 173 | 45 | 10.0% |
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