Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 48°F | 67°F | 56°F | 1.8" |
February | 49°F | 66°F | 56°F | 2.0" |
March | 51°F | 67°F | 58°F | 1.1" |
April | 54°F | 68°F | 60°F | 0.7" |
May | 58°F | 69°F | 63°F | 0.4" |
June | 61°F | 71°F | 65°F | 0.0" |
July | 65°F | 75°F | 69°F | 0.1" |
August | 66°F | 76°F | 70°F | 0.1" |
September | 64°F | 77°F | 70°F | 0.1" |
October | 59°F | 75°F | 67°F | 0.5" |
November | 53°F | 71°F | 61°F | 1.0" |
December | 48°F | 66°F | 56°F | 2.7" |
Index | Vista | 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. |
Solana Beach, CA | 13,301 | 64 | 28.0% |
Poway, CA | 49,780 | 64 | 28.0% |
Fallbrook, CA | 32,359 | 64 | 28.0% |
Carlsbad, CA | 114,411 | 64 | 28.0% |
Lake San Marcos, CA | 3,957 | 64 | 28.0% |
Vista, CA | 100,659 | 64 | 28.0% |
City | Population | Air Quality Index | National Avg. |
Tuscaloosa, AL | 100,633 | 35 | 30.0% |
San Angelo, TX | 100,509 | 28 | 44.0% |
Vacaville, CA | 99,958 | 35 | 30.0% |
Lethbridge, AB | 101,384 | n/a | |
Kamloops, BC | 101,505 | n/a | |
Vista, CA | 100,659 | 64 | 28.0% |