| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 20°F | 36°F | 28°F | 2.4" |
| February | 21°F | 38°F | 29°F | 2.3" |
| March | 33°F | 52°F | 42°F | 4.0" |
| April | 42°F | 65°F | 53°F | 4.6" |
| May | 53°F | 75°F | 64°F | 4.6" |
| June | 62°F | 83°F | 72°F | 5.5" |
| July | 64°F | 85°F | 74°F | 3.2" |
| August | 61°F | 83°F | 72°F | 3.8" |
| September | 55°F | 78°F | 66°F | 3.0" |
| October | 44°F | 66°F | 55°F | 3.4" |
| November | 34°F | 53°F | 43°F | 3.4" |
| December | 26°F | 41°F | 33°F | 3.6" |
| Index | Daleville | Indiana | National |
| Air quality index | 42 | 56 | 42 |
| Pollution index | 1,974,040 | 2,719,453 | 2,726,193 |
| Measurement | Total |
| Days measured | 363 |
| Days with good air quality | 237 |
| Days with moderate air quality | 125 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.002% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Sulphur Springs, IN | 409 | 28 | 44.0% |
| Cadiz, IN | 242 | 28 | 44.0% |
| Kennard, IN | 663 | 28 | 44.0% |
| Mount Summit, IN | 408 | 28 | 44.0% |
| New Castle, IN | 17,234 | 28 | 44.0% |
| Daleville, IN | 1,565 | 42 | 16.0% |
| City | Population | Air Quality Index | National Avg. |
| Highland Park, PA | 1,565 | 44 | 12.0% |
| Albany, TX | 1,565 | 33 | 34.0% |
| Quail Creek, TX | 1,565 | 31 | 38.0% |
| Saint-Pacôme, QC | 1,565 | n/a | |
| Punta Rassa, FL | 1,566 | 36 | 28.0% |
| Daleville, IN | 1,565 | 42 | 16.0% |
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