| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 20°F | 39°F | 29°F | 2.9" |
| February | 20°F | 40°F | 30°F | 2.5" |
| March | 30°F | 53°F | 40°F | 3.3" |
| April | 40°F | 66°F | 53°F | 3.2" |
| May | 49°F | 75°F | 62°F | 4.1" |
| June | 59°F | 82°F | 70°F | 4.3" |
| July | 62°F | 85°F | 73°F | 4.5" |
| August | 61°F | 84°F | 72°F | 3.5" |
| September | 54°F | 78°F | 66°F | 3.0" |
| October | 44°F | 66°F | 54°F | 3.6" |
| November | 33°F | 55°F | 43°F | 2.6" |
| December | 26°F | 43°F | 34°F | 3.6" |
| Index | La Croft | Ohio | National |
| Air quality index | 6 | 40 | 42 |
| Pollution index | 724,968 | 4,472,386 | 2,726,193 |
| Measurement | Total |
| Days measured | 354 |
| Days with good air quality | 353 |
| Days with moderate air quality | 1 |
| Days w/ poor A.Q. for sensitive groups | |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.030% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Industry, PA | 1,637 | 6 | 88.0% |
| Ohioville, PA | 3,313 | 6 | 88.0% |
| Irondale, OH | 389 | 6 | 88.0% |
| Shippingport, PA | 199 | 6 | 88.0% |
| New Waterford, OH | 881 | 6 | 88.0% |
| La Croft, OH | 1,048 | 6 | 88.0% |
| City | Population | Air Quality Index | National Avg. |
| Absarokee, MT | 1,048 | 21 | 58.0% |
| Roseboro, NC | 1,048 | 41 | 18.0% |
| Ear Falls, ON | 1,048 | n/a | |
| Skyline, AL | 1,049 | 44 | 12.0% |
| Herald, CA | 1,049 | 45 | 10.0% |
| La Croft, OH | 1,048 | 6 | 88.0% |
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