| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 48°F | 67°F | 56°F | 8.9" |
| February | 51°F | 68°F | 58°F | 7.7" |
| March | 54°F | 70°F | 61°F | 2.5" |
| April | 55°F | 70°F | 61°F | 3.7" |
| May | 59°F | 73°F | 65°F | 1.5" |
| June | 61°F | 73°F | 66°F | 0.0" |
| July | 66°F | 79°F | 71°F | 0.0" |
| August | 67°F | 80°F | 72°F | 0.0" |
| September | 63°F | 78°F | 69°F | 4.9" |
| October | 59°F | 77°F | 67°F | 4.0" |
| November | 56°F | 74°F | 63°F | 2.7" |
| December | 50°F | 68°F | 58°F | 3.4" |
| Index | Rolling Hills | California | National |
| Air quality index | 72 | 55 | 42 |
| Pollution index | 4,251,410 | 10,473,190 | 2,726,193 |
| 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 | Population | Air Quality Index | National Avg. |
| Gardena, CA | 59,401 | 72 | 44.0% |
| Willowbrook, CA | 24,401 | 72 | 44.0% |
| Lakewood, CA | 79,676 | 72 | 44.0% |
| East Rancho Dominguez, CA | 15,252 | 72 | 44.0% |
| Paramount, CA | 53,949 | 72 | 44.0% |
| Rolling Hills, CA | 1,439 | 72 | 44.0% |
| City | Population | Air Quality Index | National Avg. |
| Glencoe, FL | 1,439 | 37 | 26.0% |
| Rome City, IN | 1,439 | 45 | 10.0% |
| Dickson, OK | 1,439 | 43 | 14.0% |
| Laflin, PA | 1,439 | 38 | 24.0% |
| Montello, WI | 1,439 | 35 | 30.0% |
| Rolling Hills, CA | 1,439 | 72 | 44.0% |
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