| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 48°F | 69°F | 57°F | 2.3" |
| February | 49°F | 69°F | 58°F | 1.9" |
| March | 52°F | 70°F | 60°F | 0.9" |
| April | 54°F | 72°F | 62°F | 0.6" |
| May | 59°F | 73°F | 65°F | 0.3" |
| June | 62°F | 76°F | 67°F | 0.0" |
| July | 66°F | 80°F | 71°F | 0.1" |
| August | 66°F | 82°F | 72°F | 0.0" |
| September | 65°F | 82°F | 72°F | 0.2" |
| October | 60°F | 79°F | 68°F | 0.5" |
| November | 54°F | 75°F | 63°F | 0.7" |
| December | 48°F | 68°F | 57°F | 2.4" |
| Index | Villa Park | California | National |
| Air quality index | 89 | 55 | 50 |
| Pollution index | 858,652 | 18,106,726 | 5,066,862 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 42 |
| Days with moderate air quality | 178 |
| Days w/ poor A.Q. for sensitive groups | 79 |
| Days with unhealthy air quality | 58 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.020% |
| Mercury | 0.001% |
| City, State | Population | Air Quality Index | National Avg. |
| Industry, CA | 266 | 72 | 44% |
| La Habra, CA | 61,660 | 72 | 44% |
| Los Alamitos, CA | 11,661 | 72 | 44% |
| Westminster, CA | 91,635 | 72 | 44% |
| Buena Park, CA | 82,771 | 72 | 44% |
| Villa Park, CA | 5,922 | 89 | 78% |
| City, State | Population | Air Quality Index | National Avg. |
| Little Silver, NJ | 5,922 | 51 | 2% |
| Hilton, NY | 5,921 | 37 | 26% |
| Indiantown, FL | 5,921 | 36 | 28% |
| Hillandale, MD | 5,921 | 47 | 6% |
| McCordsville, IN | 5,924 | 54 | 8% |
| Villa Park, CA | 5,922 | 89 | 78% |
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