| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 34°F | 60°F | 46°F | 2.9" |
| February | 36°F | 63°F | 49°F | 3.7" |
| March | 43°F | 72°F | 57°F | 3.3" |
| April | 51°F | 80°F | 66°F | 3.1" |
| May | 59°F | 86°F | 72°F | 3.2" |
| June | 69°F | 92°F | 80°F | 5.2" |
| July | 72°F | 94°F | 82°F | 5.4" |
| August | 72°F | 93°F | 81°F | 6.1" |
| September | 65°F | 88°F | 76°F | 3.5" |
| October | 52°F | 79°F | 65°F | 4.0" |
| November | 40°F | 69°F | 54°F | 3.2" |
| December | 38°F | 63°F | 50°F | 4.6" |
| Index | West Columbia | South Carolina | National |
| Air quality index | 43 | 37 | 42 |
| Pollution index | 13,023,700 | 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 | 2.600% |
| Benzene | 0.080% |
| Carbon Tetrachloride | 0.060% |
| Lead | 0.120% |
| Mercury | 0.110% |
| City | Population | Air Quality Index | National Avg. |
| Dentsville, SC | 15,537 | 43 | 14.0% |
| Pine Ridge, SC | 2,771 | 43 | 14.0% |
| Lexington, SC | 21,847 | 43 | 14.0% |
| St. Andrews, SC | 21,355 | 43 | 14.0% |
| Springdale, SC | 2,878 | 43 | 14.0% |
| West Columbia, SC | 17,782 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Colonia, NJ | 17,782 | 51 | 2.0% |
| Oak Grove, OR | 17,781 | 38 | 24.0% |
| Franklin Park, IL | 17,779 | 55 | 10.0% |
| Port Hope, ON | 17,769 | n/a | |
| Selma, AL | 17,762 | 52 | 4.0% |
| West Columbia, SC | 17,782 | 43 | 14.0% |
Here are the best places to live in South Carolina
Check out the 10 most dangerous cities in South Carolina
These are the largest cities in South Carolina
See the best places to live in West Columbia