| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 37°F | 60°F | 47°F | 3.0" |
| February | 38°F | 62°F | 49°F | 3.8" |
| March | 45°F | 71°F | 57°F | 3.0" |
| April | 53°F | 78°F | 65°F | 3.2" |
| May | 60°F | 84°F | 72°F | 3.5" |
| June | 69°F | 91°F | 79°F | 4.4" |
| July | 71°F | 93°F | 80°F | 6.1" |
| August | 72°F | 91°F | 80°F | 4.3" |
| September | 66°F | 87°F | 75°F | 3.9" |
| October | 54°F | 78°F | 65°F | 3.8" |
| November | 43°F | 68°F | 54°F | 2.7" |
| December | 41°F | 63°F | 51°F | 4.2" |
| Index | Orangeburg | South Carolina | National |
| Air quality index | 43 | 37 | 42 |
| Pollution index | 783,589 | 3,620,438 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 264 |
| Days with moderate air quality | 99 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.003% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Cordova, SC | 227 | 29 | 42.0% |
| Rowesville, SC | 543 | 29 | 42.0% |
| Bamberg, SC | 3,240 | 29 | 42.0% |
| Bowman, SC | 617 | 29 | 42.0% |
| Cope, SC | 28 | 29 | 42.0% |
| Orangeburg, SC | 12,713 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Fort Bliss, TX | 12,709 | 53 | 6.0% |
| Tehachapi, CA | 12,718 | 67 | 34.0% |
| Geneva, NY | 12,720 | 34 | 32.0% |
| Wickliffe, OH | 12,720 | 50 | = 100 |
| East Islip, NY | 12,722 | 43 | 14.0% |
| Orangeburg, SC | 12,713 | 43 | 14.0% |
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