| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 33°F | 54°F | 43°F | 4.1" |
| February | 35°F | 57°F | 45°F | 4.0" |
| March | 43°F | 67°F | 54°F | 4.2" |
| April | 51°F | 75°F | 63°F | 4.1" |
| May | 59°F | 82°F | 70°F | 3.8" |
| June | 67°F | 90°F | 78°F | 3.6" |
| July | 70°F | 91°F | 79°F | 3.9" |
| August | 70°F | 90°F | 79°F | 4.7" |
| September | 64°F | 84°F | 73°F | 4.6" |
| October | 51°F | 75°F | 62°F | 3.4" |
| November | 40°F | 65°F | 52°F | 3.5" |
| December | 38°F | 58°F | 47°F | 5.1" |
| Index | Lawrenceville | Georgia | National |
| Air quality index | 37 | 41 | 42 |
| Pollution index | 13,513,500 | 1,874,972 | 2,726,193 |
| Measurement | Total |
| Days measured | 340 |
| Days with good air quality | 259 |
| Days with moderate air quality | 81 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.170% |
| Benzene | 0.180% |
| Carbon Tetrachloride | 0.040% |
| Lead | 0.080% |
| Mercury | 0.005% |
| City | Population | Air Quality Index | National Avg. |
| Auburn, GA | 7,519 | 37 | 26.0% |
| Buford, GA | 16,003 | 37 | 26.0% |
| Suwanee, GA | 20,444 | 37 | 26.0% |
| Hoschton, GA | 2,039 | 37 | 26.0% |
| Carl, GA | 281 | 37 | 26.0% |
| Lawrenceville, GA | 30,125 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| San Lorenzo, CA | 30,117 | 40 | 20.0% |
| Newington, CT | 30,114 | 41 | 18.0% |
| Ballwin, MO | 30,177 | 54 | 8.0% |
| Burlingame, CA | 30,071 | 43 | 14.0% |
| Elizabethtown, KY | 30,179 | 39 | 22.0% |
| Lawrenceville, GA | 30,125 | 37 | 26.0% |
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