| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 18°F | 34°F | 26°F | 4.5" |
| February | 19°F | 35°F | 27°F | 3.6" |
| March | 31°F | 49°F | 39°F | 4.4" |
| April | 40°F | 62°F | 50°F | 5.4" |
| May | 50°F | 72°F | 60°F | 6.5" |
| June | 60°F | 81°F | 70°F | 5.8" |
| July | 64°F | 84°F | 74°F | 8.0" |
| August | 63°F | 82°F | 72°F | 7.5" |
| September | 56°F | 76°F | 65°F | 5.4" |
| October | 45°F | 64°F | 54°F | 6.2" |
| November | 33°F | 51°F | 42°F | 5.4" |
| December | 24°F | 38°F | 31°F | 3.8" |
| Index | Lowell | Indiana | National |
| Air quality index | 55 | 56 | 42 |
| Pollution index | 3,962,360 | 2,719,453 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 121 |
| Days with moderate air quality | 227 |
| Days w/ poor A.Q. for sensitive groups | 16 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.070% |
| Carbon Tetrachloride | 0.020% |
| Lead | 0.300% |
| Mercury | 0.110% |
| City | Population | Air Quality Index | National Avg. |
| Lake Dalecarlia, IN | 1,779 | 37 | 26.0% |
| De Motte, IN | 4,093 | 37 | 26.0% |
| Shelby, IN | 370 | 37 | 26.0% |
| Shorewood Forest, IN | 2,931 | 37 | 26.0% |
| Merrillville, IN | 34,871 | 37 | 26.0% |
| Lowell, IN | 9,793 | 55 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Corte Madera, CA | 9,793 | 40 | 20.0% |
| Victoria, MN | 9,787 | 46 | 8.0% |
| Baker City, OR | 9,786 | 20 | 60.0% |
| Orange Lake, NY | 9,800 | 36 | 28.0% |
| Oromocto, NB | 9,784 | n/a | |
| Lowell, IN | 9,793 | 55 | 10.0% |
Here are the best places to live in Indiana
Check out the 10 most dangerous cities in Indiana
These are the 10 cheapest cities in Indiana
Safest Cities In The US