| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 23°F | 36°F | 29°F | 3.5" |
| February | 27°F | 43°F | 34°F | 1.7" |
| March | 36°F | 56°F | 45°F | 5.3" |
| April | 43°F | 65°F | 53°F | 5.1" |
| May | 53°F | 74°F | 63°F | 3.8" |
| June | 61°F | 83°F | 71°F | 3.9" |
| July | 61°F | 88°F | 75°F | 2.7" |
| August | 57°F | 86°F | 71°F | 5.4" |
| September | 54°F | 78°F | 65°F | 8.2" |
| October | 45°F | 66°F | 54°F | 4.8" |
| November | 35°F | 54°F | 43°F | 4.4" |
| December | 27°F | 40°F | 33°F | 5.4" |
| Index | Herbst | Indiana | National |
| Air quality index | 37 | 56 | 42 |
| Pollution index | 508,399 | 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. |
| Van Buren, IN | 897 | 31 | 38.0% |
| Landess, IN | 89 | 31 | 38.0% |
| Fowlerton, IN | 244 | 35 | 30.0% |
| Gas City, IN | 5,756 | 35 | 30.0% |
| Matthews, IN | 475 | 35 | 30.0% |
| Herbst, IN | 144 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Rye, AR | 144 | 35 | 30.0% |
| West Point, AR | 144 | 45 | 10.0% |
| Bellville, GA | 144 | 39 | 22.0% |
| Clare, IA | 144 | 37 | 26.0% |
| Delaware, IA | 144 | 39 | 22.0% |
| Herbst, IN | 144 | 37 | 26.0% |
Here are the best places to live in Indiana
Safest States In The US
These are the 10 cheapest cities in Indiana
Check out the 10 most dangerous cities in Indiana