| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 47°F | 67°F | 56°F | 3.1" |
| February | 49°F | 70°F | 59°F | 2.9" |
| March | 55°F | 76°F | 65°F | 2.8" |
| April | 63°F | 82°F | 72°F | 2.6" |
| May | 69°F | 87°F | 77°F | 4.8" |
| June | 75°F | 92°F | 82°F | 8.1" |
| July | 77°F | 93°F | 84°F | 6.4" |
| August | 77°F | 93°F | 84°F | 6.7" |
| September | 75°F | 89°F | 81°F | 4.7" |
| October | 66°F | 83°F | 74°F | 3.4" |
| November | 56°F | 75°F | 65°F | 1.8" |
| December | 52°F | 71°F | 60°F | 2.9" |
| Index | Marietta | Jacksonville | Florida |
| Air quality index | 43 | 43 | 35 |
| Pollution index | 6,554,710 | 6,554,710 | 7,570,785 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 245 |
| Days with moderate air quality | 119 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.020% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.070% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Baldwin, FL | 1,556 | 43 | 14.0% |
| Bellair-Meadowbrook Terrace, FL | 15,168 | 43 | 14.0% |
| Nassau Village-Ratliff, FL | 4,789 | 43 | 14.0% |
| Lakeside, FL | 31,058 | 43 | 14.0% |
| Oakleaf Plantation, FL | 28,153 | 43 | 14.0% |
| Jacksonville, FL | 902,488 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Fort Worth, TX | 892,221 | 51 | 2.0% |
| Columbus, OH | 889,079 | 46 | 8.0% |
| San Francisco, CA | 874,784 | 40 | 20.0% |
| Charlotte, NC | 873,570 | 49 | 2.0% |
| Indianapolis, IN | 869,387 | 54 | 8.0% |
| Jacksonville, FL | 902,488 | 43 | 14.0% |
Here are the best places to live in Florida
Top 10 cities in Florida with the best education system
Top 10 best public schools in Jacksonville
These are the 10 most affordable cities in Florida