| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 33°F | 54°F | 42°F | 3.6" |
| February | 36°F | 57°F | 45°F | 3.7" |
| March | 45°F | 67°F | 55°F | 5.6" |
| April | 53°F | 76°F | 64°F | 6.5" |
| May | 61°F | 82°F | 71°F | 7.0" |
| June | 71°F | 91°F | 80°F | 3.1" |
| July | 73°F | 93°F | 82°F | 4.4" |
| August | 73°F | 93°F | 82°F | 3.6" |
| September | 66°F | 87°F | 75°F | 3.5" |
| October | 53°F | 76°F | 63°F | 4.3" |
| November | 43°F | 65°F | 53°F | 5.1" |
| December | 36°F | 55°F | 44°F | 6.4" |
| Index | Rock Creek | Little Rock | Arkansas |
| Air quality index | 45 | 45 | 38 |
| Pollution index | 1,468,480 | 607,387 | 1,487,822 |
| 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 | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| East End, AR | 6,150 | 45 | 10.0% |
| Landmark, AR | 3,628 | 45 | 10.0% |
| Natural Steps, AR | 562 | 45 | 10.0% |
| Salem, AR | 1,532 | 45 | 10.0% |
| Wrightsville, AR | 1,695 | 45 | 10.0% |
| Little Rock, AR | 198,067 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Sunrise Manor, NV | 198,187 | 54 | 8.0% |
| Augusta, GA | 197,535 | 47 | 6.0% |
| Burlington, ON | 197,435 | n/a | |
| Akron, OH | 197,375 | 43 | 14.0% |
| Montgomery, AL | 199,054 | 52 | 4.0% |
| Little Rock, AR | 198,067 | 45 | 10.0% |
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