| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 46°F | 69°F | 56°F | 3.0" |
| February | 46°F | 70°F | 57°F | 3.2" |
| March | 49°F | 74°F | 60°F | 1.5" |
| April | 51°F | 77°F | 63°F | 0.7" |
| May | 55°F | 80°F | 66°F | 0.2" |
| June | 60°F | 86°F | 71°F | 0.0" |
| July | 64°F | 92°F | 76°F | 0.1" |
| August | 64°F | 93°F | 77°F | 0.0" |
| September | 62°F | 91°F | 75°F | 0.2" |
| October | 57°F | 84°F | 68°F | 0.5" |
| November | 50°F | 76°F | 62°F | 0.7" |
| December | 44°F | 68°F | 55°F | 2.2" |
| Index | Hidden Hills | California | National |
| Air quality index | 74 | 55 | 50 |
| Pollution index | 139,490,000 | 18,106,726 | 5,066,862 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 25 |
| Days with moderate air quality | 260 |
| Days w/ poor A.Q. for sensitive groups | 76 |
| Days with unhealthy air quality | 4 |
| Pollutant | Total |
| Arsenic | 0.200% |
| Benzene | 0.950% |
| Carbon Tetrachloride | 0.080% |
| Lead | 1.320% |
| Mercury | 0.440% |
| City, State | Population | Air Quality Index | National Avg. |
| Thousand Oaks, CA | 128,623 | 48 | 4% |
| Moorpark, CA | 35,594 | 48 | 4% |
| Santa Rosa Valley, CA | 3,601 | 48 | 4% |
| Westlake Village, CA | 8,443 | 48 | 4% |
| Lake Sherwood, CA | 1,651 | 48 | 4% |
| Hidden Hills, CA | 1,573 | 74 | 48% |
| City, State | Population | Air Quality Index | National Avg. |
| Hebron, NE | 1,573 | 34 | 32% |
| Mill Hall, PA | 1,573 | 31 | 38% |
| Pittsford, NY | 1,573 | 36 | 28% |
| Peach Lake, NY | 1,573 | 47 | 6% |
| Olivet, MI | 1,573 | 34 | 32% |
| Hidden Hills, CA | 1,573 | 74 | 48% |