Air pollution statistics for Sullivan Co, New Hampshire
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 | 98.06% | 1.66% | 0.28% | 0.00% |
| 1998 | 98.31% | 1.69% | 0.00% | 0.00% |
| 1999 | 94.75% | 4.66% | 0.58% | 0.00% |
| 2000 | 96.99% | 2.73% | 0.27% | 0.00% |
| 2001 | 95.89% | 4.11% | 0.00% | 0.00% |
| 2002 | 93.10% | 5.36% | 1.15% | 0.38% |
| 2003 | 90.61% | 9.39% | 0.00% | 0.00% |
| 2004 | 91.59% | 7.94% | 0.47% | 0.00% |
| 2005 | 93.49% | 6.51% | 0.00% | 0.00% |
| 2006 | 95.31% | 4.69% | 0.00% | 0.00% |
| 2007 | 93.40% | 6.60% | 0.00% | 0.00% |