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 | San Mateo | 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. |
Neptune Beach, FL | 7,214 | 43 | 14.0% |
Yulee, FL | 13,346 | 43 | 14.0% |
Atlantic Beach, FL | 13,831 | 43 | 14.0% |
Callahan, FL | 1,408 | 43 | 14.0% |
Jacksonville Beach, FL | 23,562 | 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% |