| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 18°F | 33°F | 25°F | 1.6" |
| February | 19°F | 35°F | 26°F | 1.4" |
| March | 30°F | 49°F | 39°F | 2.0" |
| April | 40°F | 62°F | 50°F | 3.3" |
| May | 50°F | 73°F | 61°F | 3.4" |
| June | 60°F | 82°F | 70°F | 3.9" |
| July | 63°F | 84°F | 73°F | 4.0" |
| August | 61°F | 82°F | 71°F | 4.9" |
| September | 55°F | 77°F | 65°F | 2.4" |
| October | 44°F | 64°F | 53°F | 3.6" |
| November | 33°F | 51°F | 41°F | 2.1" |
| December | 23°F | 37°F | 30°F | 1.8" |
| Index | Valparaiso | Indiana | National |
| Air quality index | 37 | 56 | 42 |
| Pollution index | 898,555 | 2,719,453 | 2,726,193 |
| Measurement | Total |
| Days measured | 364 |
| Days with good air quality | 305 |
| Days with moderate air quality | 55 |
| Days w/ poor A.Q. for sensitive groups | 4 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.004% |
| Lead | 0.005% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Hanna, IN | 198 | 37 | 26.0% |
| La Crosse, IN | 517 | 37 | 26.0% |
| Dune Acres, IN | 258 | 37 | 26.0% |
| Lakes of the Four Seasons, IN | 7,081 | 37 | 26.0% |
| Salt Creek Commons, IN | 1,941 | 37 | 26.0% |
| Valparaiso, IN | 33,707 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Midvale, UT | 33,708 | 51 | 2.0% |
| Beverly Hills, CA | 33,709 | 72 | 44.0% |
| University Place, WA | 33,661 | 30 | 40.0% |
| Pointe-Claire, QC | 33,658 | n/a | |
| Franklin Town, MA | 33,644 | 44 | 12.0% |
| Valparaiso, IN | 33,707 | 37 | 26.0% |
Here are the best places to live in Indiana
See the best places to live in Valparaiso
Most Dangerous Cities In The US
Check out the 10 safest cities in Indiana