Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 45°F | 69°F | 56°F | 1.9" |
February | 47°F | 69°F | 57°F | 2.2" |
March | 50°F | 70°F | 59°F | 1.0" |
April | 53°F | 72°F | 61°F | 0.7" |
May | 57°F | 72°F | 63°F | 0.4" |
June | 61°F | 76°F | 66°F | 0.0" |
July | 65°F | 80°F | 71°F | 0.2" |
August | 66°F | 82°F | 72°F | 0.0" |
September | 64°F | 83°F | 72°F | 0.2" |
October | 58°F | 80°F | 68°F | 0.5" |
November | 51°F | 74°F | 62°F | 0.9" |
December | 46°F | 68°F | 56°F | 2.5" |
Index | Rancho San Diego | California | National |
Air quality index | 64 | 55 | 50 |
Pollution index | 162,740 | 18,106,726 | 5,066,862 |
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 | 0.000% |
Benzene | 0.003% |
Carbon Tetrachloride | 0.000% |
Lead | 0.000% |
Mercury | 0.000% |
City, State | Population | Air Quality Index | National Avg. |
Chula Vista, CA | 260,598 | 64 | 28% |
Lemon Grove, CA | 26,421 | 64 | 28% |
Spring Valley, CA | 30,128 | 64 | 28% |
Crest, CA | 2,733 | 64 | 28% |
Harbison Canyon, CA | 4,128 | 64 | 28% |
Rancho San Diego, CA | 22,018 | 64 | 28% |
City, State | Population | Air Quality Index | National Avg. |
Union Hill-Novelty Hill, WA | 22,015 | 45 | 10% |
Watertown, SD | 22,026 | 25 | 50% |
Willowbrook, CA | 22,035 | 72 | 44% |
South Holland, IL | 22,040 | 55 | 10% |
Hunters Creek, FL | 21,988 | 39 | 22% |
Rancho San Diego, CA | 22,018 | 64 | 28% |