| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 26°F | 41°F | 33°F | 5.4" |
| February | 21°F | 35°F | 27°F | 2.3" |
| March | 34°F | 50°F | 42°F | 10.4" |
| April | 42°F | 64°F | 51°F | 5.1" |
| May | 53°F | 77°F | 65°F | 18.8" |
| June | 64°F | 87°F | 75°F | 9.1" |
| July | 65°F | 87°F | 75°F | 7.9" |
| August | 66°F | 88°F | 75°F | 4.8" |
| September | 58°F | 83°F | 69°F | 12.8" |
| October | 51°F | 70°F | 59°F | 3.2" |
| November | 37°F | 55°F | 45°F | 6.7" |
| December | 24°F | 38°F | 30°F | 3.7" |
| Index | Kokomo | Indiana | National |
| Air quality index | 37 | 56 | 42 |
| Pollution index | 680,492 | 2,719,453 | 2,726,193 |
| Measurement | Total |
| Days measured | 351 |
| Days with good air quality | 319 |
| Days with moderate air quality | 32 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Grissom AFB, IN | 2,416 | 37 | 26.0% |
| Converse, IN | 1,167 | 37 | 26.0% |
| Sims, IN | 95 | 37 | 26.0% |
| Amboy, IN | 373 | 37 | 26.0% |
| Galveston, IN | 1,386 | 37 | 26.0% |
| Kokomo, IN | 60,311 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Springfield, OH | 60,312 | 45 | 10.0% |
| Mirabel, QC | 60,296 | n/a | |
| Great Falls, MT | 60,209 | 21 | 58.0% |
| Orland Park, IL | 60,161 | 55 | 10.0% |
| Des Plaines, IL | 60,159 | 55 | 10.0% |
| Kokomo, IN | 60,311 | 37 | 26.0% |