Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 49°F | 68°F | 58°F | 2.0" |
February | 51°F | 68°F | 59°F | 1.8" |
March | 54°F | 69°F | 61°F | 1.1" |
April | 56°F | 70°F | 63°F | 0.6" |
May | 60°F | 71°F | 65°F | 0.3" |
June | 63°F | 73°F | 67°F | 0.0" |
July | 67°F | 77°F | 71°F | 0.2" |
August | 68°F | 78°F | 72°F | 0.1" |
September | 66°F | 79°F | 72°F | 0.2" |
October | 61°F | 77°F | 68°F | 0.7" |
November | 55°F | 73°F | 64°F | 0.9" |
December | 50°F | 68°F | 58°F | 2.3" |
Index | Coronado | California | National |
Air quality index | 64 | 55 | 42 |
Pollution index | 45,820,500 | 10,473,190 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 87 |
Days with moderate air quality | 253 |
Days w/ poor A.Q. for sensitive groups | 23 |
Days with unhealthy air quality | 2 |
Pollutant | Total |
Arsenic | 1.130% |
Benzene | 0.410% |
Carbon Tetrachloride | 0.030% |
Lead | 0.600% |
Mercury | 0.080% |
City | Population | Air Quality Index | National Avg. |
Imperial Beach, CA | 27,334 | 64 | 28.0% |
San Diego, CA | 1,414,545 | 64 | 28.0% |
Casa de Oro-Mount Helix, CA | 19,327 | 64 | 28.0% |
Santee, CA | 57,407 | 64 | 28.0% |
La Presa, CA | 37,410 | 64 | 28.0% |
Coronado, CA | 24,526 | 64 | 28.0% |
City | Population | Air Quality Index | National Avg. |
Homer Glen, IL | 24,521 | 55 | 10.0% |
Ottumwa, IA | 24,505 | 29 | 42.0% |
Rockville Centre, NY | 24,552 | 51 | 2.0% |
Key West, FL | 24,495 | 34 | 32.0% |
Norton Shores, MI | 24,557 | 38 | 24.0% |
Coronado, CA | 24,526 | 64 | 28.0% |