| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 41°F | 61°F | 50°F | 2.5" |
| February | 44°F | 64°F | 53°F | 2.5" |
| March | 46°F | 68°F | 56°F | 2.1" |
| April | 48°F | 71°F | 58°F | 1.3" |
| May | 52°F | 75°F | 62°F | 0.3" |
| June | 56°F | 80°F | 66°F | 0.2" |
| July | 58°F | 82°F | 68°F | 0.0" |
| August | 58°F | 82°F | 68°F | 0.0" |
| September | 57°F | 82°F | 67°F | 0.1" |
| October | 53°F | 77°F | 63°F | 0.6" |
| November | 46°F | 68°F | 56°F | 1.3" |
| December | 41°F | 61°F | 50°F | 2.4" |
| Index | Milpitas | California | National |
| Air quality index | 43 | 55 | 42 |
| Pollution index | 23,499,800 | 10,473,190 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 263 |
| Days with moderate air quality | 98 |
| Days w/ poor A.Q. for sensitive groups | 4 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.120% |
| Benzene | 0.170% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.220% |
| Mercury | 0.140% |
| City | Population | Air Quality Index | National Avg. |
| Newark, CA | 48,148 | 43 | 14.0% |
| Sunol, CA | 835 | 43 | 14.0% |
| Cupertino, CA | 59,799 | 43 | 14.0% |
| Alum Rock, CA | 11,798 | 43 | 14.0% |
| Los Altos Hills, CA | 8,496 | 43 | 14.0% |
| Milpitas, CA | 75,182 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Arlington Heights, IL | 75,071 | 55 | 10.0% |
| Union City, CA | 75,067 | 43 | 14.0% |
| Missouri City, TX | 75,348 | 52 | 4.0% |
| St. Joseph, MO | 75,369 | 43 | 14.0% |
| Missoula, MT | 74,994 | 40 | 20.0% |
| Milpitas, CA | 75,182 | 43 | 14.0% |
Here are the best places to live in California
Top 10 cities in California with the best education system
Top 10 best public schools in Milpitas
10 best cities to buy a new house in California