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 | El Cajon | California | National |
Air quality index | 64 | 55 | 42 |
Pollution index | 162,740 | 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 | 0.000% |
Benzene | 0.003% |
Carbon Tetrachloride | 0.000% |
Lead | 0.000% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Casa de Oro-Mount Helix, CA | 19,327 | 64 | 28.0% |
Harbison Canyon, CA | 4,355 | 64 | 28.0% |
Rancho San Diego, CA | 21,476 | 64 | 28.0% |
Fairbanks Ranch, CA | 2,929 | 64 | 28.0% |
Bonita, CA | 12,470 | 64 | 28.0% |
El Cajon, CA | 103,249 | 64 | 28.0% |
City | Population | Air Quality Index | National Avg. |
Burbank, CA | 103,411 | 72 | 44.0% |
Las Cruces, NM | 102,950 | 51 | 2.0% |
Rialto, CA | 103,549 | 89 | 78.0% |
Sparks, NV | 102,895 | 46 | 8.0% |
San Mateo, CA | 103,619 | 43 | 14.0% |
El Cajon, CA | 103,249 | 64 | 28.0% |