| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 48°F | 68°F | 58°F | 2.7" |
| February | 49°F | 68°F | 58°F | 2.1" |
| March | 52°F | 68°F | 59°F | 1.2" |
| April | 54°F | 70°F | 61°F | 0.6" |
| May | 57°F | 70°F | 63°F | 0.3" |
| June | 61°F | 72°F | 65°F | 0.0" |
| July | 64°F | 76°F | 69°F | 0.1" |
| August | 64°F | 76°F | 69°F | 0.0" |
| September | 63°F | 77°F | 69°F | 0.2" |
| October | 60°F | 77°F | 67°F | 0.6" |
| November | 54°F | 73°F | 62°F | 0.7" |
| December | 48°F | 68°F | 57°F | 2.4" |
| Index | El Segundo | California | National |
| Air quality index | 72 | 55 | 50 |
| Pollution index | 4,251,410 | 18,106,726 | 5,066,862 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 66 |
| Days with moderate air quality | 208 |
| Days w/ poor A.Q. for sensitive groups | 62 |
| Days with unhealthy air quality | 28 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.100% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City, State | Population | Air Quality Index | National Avg. |
| Florence-Graham, CA | 63,390 | 72 | 44% |
| Westmont, CA | 32,147 | 72 | 44% |
| Commerce, CA | 12,997 | 72 | 44% |
| Carson, CA | 92,780 | 72 | 44% |
| Huntington Park, CA | 58,921 | 72 | 44% |
| El Segundo, CA | 16,901 | 72 | 44% |
| City, State | Population | Air Quality Index | National Avg. |
| South Ogden, UT | 16,893 | 45 | 10% |
| Maitland, FL | 16,911 | 39 | 22% |
| White Settlement, TX | 16,886 | 33 | 34% |
| Five Forks, SC | 16,929 | 46 | 8% |
| Dyersburg, TN | 16,867 | 26 | 48% |
| El Segundo, CA | 16,901 | 72 | 44% |
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