| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 29°F | 48°F | 37°F | 12.0" |
| February | 31°F | 53°F | 40°F | 4.5" |
| March | 42°F | 66°F | 52°F | 3.5" |
| April | 45°F | 69°F | 55°F | 5.7" |
| May | 56°F | 79°F | 66°F | 5.2" |
| June | 65°F | 86°F | 74°F | 5.0" |
| July | 67°F | 89°F | 77°F | 8.5" |
| August | 70°F | 92°F | 80°F | 7.8" |
| September | 63°F | 85°F | 73°F | 10.7" |
| October | 50°F | 74°F | 60°F | 9.6" |
| November | 40°F | 64°F | 50°F | 2.2" |
| December | 29°F | 50°F | 37°F | 2.1" |
| Index | Lowell | Arkansas | National |
| Air quality index | 44 | 38 | 42 |
| Pollution index | 2,124,190 | 1,487,822 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 267 |
| Days with moderate air quality | 98 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.020% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.004% |
| Lead | 0.010% |
| Mercury | 0.200% |
| City | Population | Air Quality Index | National Avg. |
| Bella Vista, AR | 28,819 | 44 | 12.0% |
| Little Flock, AR | 2,776 | 44 | 12.0% |
| Rogers, AR | 67,787 | 44 | 12.0% |
| Fayetteville, AR | 86,622 | 44 | 12.0% |
| Springdale, AR | 80,433 | 44 | 12.0% |
| Lowell, AR | 9,433 | 44 | 12.0% |
| City | Population | Air Quality Index | National Avg. |
| Brownfield, TX | 9,431 | 25 | 50.0% |
| Powdersville, SC | 9,436 | 46 | 8.0% |
| Bladensburg, MD | 9,428 | 47 | 6.0% |
| Bloomingdale, TN | 9,428 | 45 | 10.0% |
| Mount Airy, MD | 9,439 | 46 | 8.0% |
| Lowell, AR | 9,433 | 44 | 12.0% |
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