| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 27°F | 45°F | 35°F | 3.7" |
| February | 29°F | 47°F | 37°F | 2.9" |
| March | 39°F | 60°F | 48°F | 4.5" |
| April | 48°F | 71°F | 59°F | 6.3" |
| May | 57°F | 79°F | 68°F | 5.7" |
| June | 66°F | 87°F | 77°F | 5.3" |
| July | 69°F | 89°F | 79°F | 5.6" |
| August | 68°F | 89°F | 78°F | 3.7" |
| September | 61°F | 83°F | 71°F | 4.6" |
| October | 48°F | 71°F | 59°F | 4.4" |
| November | 38°F | 59°F | 48°F | 3.5" |
| December | 31°F | 48°F | 39°F | 4.8" |
| Index | Hazelwood | Louisville | Kentucky |
| Air quality index | 49 | 49 | 45 |
| Pollution index | 10,162,700 | 10,162,700 | 1,369,131 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 195 |
| Days with moderate air quality | 166 |
| Days w/ poor A.Q. for sensitive groups | 4 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.060% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.050% |
| Mercury | 0.140% |
| City | Population | Air Quality Index | National Avg. |
| Elizabeth, IN | 121 | 49 | 2.0% |
| Lanesville, IN | 745 | 49 | 2.0% |
| Audubon Park, KY | 1,273 | 49 | 2.0% |
| Houston Acres, KY | 561 | 49 | 2.0% |
| Kingsley, KY | 425 | 49 | 2.0% |
| Louisville, KY | 618,733 | 49 | 2.0% |
| City | Population | Air Quality Index | National Avg. |
| Baltimore, MD | 602,274 | 46 | 8.0% |
| Las Vegas, NV | 644,594 | 54 | 8.0% |
| Milwaukee, WI | 592,649 | 44 | 12.0% |
| Oklahoma City, OK | 649,821 | 48 | 4.0% |
| Portland, OR | 650,380 | 38 | 24.0% |
| Louisville, KY | 618,733 | 49 | 2.0% |
Here are the best places to live in Kentucky
Check out the 10 most dangerous cities in Kentucky
These are the 10 cheapest cities in Kentucky
Safest States In The US