| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 31°F | 53°F | 40°F | 4.4" |
| February | 34°F | 56°F | 44°F | 5.2" |
| March | 43°F | 66°F | 54°F | 6.4" |
| April | 51°F | 75°F | 63°F | 8.7" |
| May | 60°F | 82°F | 70°F | 8.2" |
| June | 69°F | 91°F | 80°F | 3.8" |
| July | 71°F | 93°F | 82°F | 7.7" |
| August | 71°F | 92°F | 81°F | 5.9" |
| September | 63°F | 86°F | 73°F | 5.7" |
| October | 51°F | 76°F | 62°F | 5.3" |
| November | 41°F | 64°F | 51°F | 5.8" |
| December | 34°F | 54°F | 43°F | 8.1" |
| Index | Damascus | Arkansas | National |
| Air quality index | 45 | 38 | 42 |
| Pollution index | 2,326,950 | 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 | 0.040% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.010% |
| Mercury | 0.160% |
| City | Population | Air Quality Index | National Avg. |
| Clinton, AR | 2,538 | 36 | 28.0% |
| Enola, AR | 389 | 45 | 10.0% |
| Twin Groves, AR | 316 | 45 | 10.0% |
| Greers Ferry, AR | 857 | 45 | 10.0% |
| Greenbrier, AR | 5,592 | 45 | 10.0% |
| Damascus, AR | 412 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Lake View, AR | 412 | 43 | 14.0% |
| Titonka, IA | 412 | 15 | 70.0% |
| Union, IA | 412 | 37 | 26.0% |
| Loraine, IL | 412 | 41 | 18.0% |
| Betterton, MD | 412 | 46 | 8.0% |
| Damascus, AR | 412 | 45 | 10.0% |
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