Air pollute stats for Bristol Co in 2001
| County | Bristol Co |
| State | Massachusetts |
| Data from year | 2001 |
| Total number of days monitored | 364 |
| Good air | 293 (80.49%) |
| Moderate air | 55 (15.11%) |
| Unhealthy for sensitive groups | 12 (3.30%) |
| Unhealthy for all | 4 (1.10%) |
|
| Worst pollutants |
|
| Carbon monoxide | 0 (0.00%) |
| Nitrogen dioxide | 0 (0.00%) |
| Ozone | 134 (36.81%) |