| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 34°F | 57°F | 44°F | 4.7" |
| February | 36°F | 60°F | 47°F | 4.5" |
| March | 44°F | 68°F | 55°F | 4.6" |
| April | 51°F | 76°F | 64°F | 4.6" |
| May | 60°F | 82°F | 71°F | 3.7" |
| June | 68°F | 89°F | 78°F | 4.3" |
| July | 71°F | 91°F | 80°F | 5.2" |
| August | 71°F | 90°F | 79°F | 5.3" |
| September | 65°F | 85°F | 74°F | 3.3" |
| October | 53°F | 76°F | 64°F | 3.4" |
| November | 42°F | 67°F | 54°F | 3.4" |
| December | 38°F | 59°F | 48°F | 6.2" |
| Index | Irondale | Georgia | National |
| Air quality index | 52 | 41 | 42 |
| Pollution index | 4,626,350 | 1,874,972 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 162 |
| Days with moderate air quality | 184 |
| Days w/ poor A.Q. for sensitive groups | 18 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.040% |
| Benzene | 0.070% |
| Carbon Tetrachloride | 0.020% |
| Lead | 0.020% |
| Mercury | 0.002% |
| City | Population | Air Quality Index | National Avg. |
| Experiment, GA | 2,915 | 52 | 4.0% |
| Heron Bay, GA | 3,300 | 52 | 4.0% |
| Riverdale, GA | 15,455 | 52 | 4.0% |
| Jonesboro, GA | 5,428 | 52 | 4.0% |
| Sunny Side, GA | 213 | 52 | 4.0% |
| Irondale, GA | 8,107 | 52 | 4.0% |
| City | Population | Air Quality Index | National Avg. |
| North Bay Village, FL | 8,108 | 41 | 18.0% |
| Eden Isle, LA | 8,103 | 45 | 10.0% |
| Vinton, VA | 8,102 | 38 | 24.0% |
| Island Lake, IL | 8,112 | 39 | 22.0% |
| Topanga, CA | 8,098 | 72 | 44.0% |
| Irondale, GA | 8,107 | 52 | 4.0% |
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