Air pollution statistics for Madison Co, Mississippi
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 | 85.45% | 14.55% | 0.00% | 0.00% |
| 1998 | 77.21% | 20.93% | 1.86% | 0.00% |
| 1999 | 74.42% | 24.65% | 0.93% | 0.00% |
| 2000 | 76.02% | 23.98% | 0.00% | 0.00% |
| 2001 | 86.18% | 13.82% | 0.00% | 0.00% |
| 2002 | 93.28% | 6.30% | 0.42% | 0.00% |
| 2003 | 92.59% | 7.41% | 0.00% | 0.00% |
| 2004 | 96.96% | 3.04% | 0.00% | 0.00% |