Air pollution statistics for Morgan Co, Ohio
3. Select a year
| Year | Percentage days with good air | Percentage days with moderate air | Percentage days with unhealthy air for sensitive groups | Percentage days with unhealthy air |
| 1997 | 96.94% | 3.06% | 0.00% | 0.00% |
| 1998 | 95.73% | 4.27% | 0.00% | 0.00% |
| 1999 | 98.85% | 1.15% | 0.00% | 0.00% |
| 2000 | 98.90% | 1.10% | 0.00% | 0.00% |
| 2001 | 99.17% | 0.83% | 0.00% | 0.00% |
| 2002 | 99.14% | 0.86% | 0.00% | 0.00% |
| 2003 | 98.32% | 1.68% | 0.00% | 0.00% |
| 2004 | 97.70% | 2.30% | 0.00% | 0.00% |
| 2005 | 99.14% | 0.86% | 0.00% | 0.00% |
| 2006 | 98.31% | 1.69% | 0.00% | 0.00% |
| 2007 | 99.45% | 0.55% | 0.00% | 0.00% |