| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 47°F | 67°F | 56°F | 4.7" |
| February | 48°F | 68°F | 58°F | 4.2" |
| March | 54°F | 74°F | 63°F | 5.2" |
| April | 61°F | 79°F | 70°F | 5.3" |
| May | 67°F | 84°F | 75°F | 11.1" |
| June | 72°F | 88°F | 80°F | 10.3" |
| July | 74°F | 90°F | 81°F | 8.5" |
| August | 75°F | 89°F | 81°F | 7.9" |
| September | 73°F | 86°F | 79°F | 5.6" |
| October | 66°F | 81°F | 73°F | 6.6" |
| November | 56°F | 73°F | 64°F | 3.2" |
| December | 52°F | 71°F | 61°F | 4.9" |
| Index | St. Augustine Beach | Florida | National |
| Air quality index | 31 | 35 | 42 |
| Pollution index | 5,184,880 | 7,570,785 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 358 |
| Days with moderate air quality | 7 |
| Days w/ poor A.Q. for sensitive groups | |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.190% |
| Benzene | 0.060% |
| Carbon Tetrachloride | 0.070% |
| Lead | 0.060% |
| Mercury | 0.050% |
| City | Population | Air Quality Index | National Avg. |
| World Golf Village, FL | 18,937 | 17 | 66.0% |
| Flagler Estates, FL | 3,348 | 17 | 66.0% |
| Hastings, FL | 1,304 | 17 | 66.0% |
| Crescent Beach, FL | 1,085 | 31 | 38.0% |
| St. Augustine, FL | 15,065 | 31 | 38.0% |
| St. Augustine Beach, FL | 7,010 | 31 | 38.0% |
| City | Population | Air Quality Index | National Avg. |
| Commerce, GA | 7,008 | 44 | 12.0% |
| Shamokin, PA | 7,007 | 42 | 16.0% |
| Labrador City, NL | 7,007 | n/a | |
| Crete, NE | 7,013 | 31 | 38.0% |
| Keyport, NJ | 7,005 | 51 | 2.0% |
| St. Augustine Beach, FL | 7,010 | 31 | 38.0% |
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