Air pollute stats for Baltimore Co in 2004
| County | Baltimore Co |
| State | Maryland |
| Data from year | 2004 |
| Total number of days monitored | 366 |
| Good air | 223 (60.93%) |
| Moderate air | 138 (37.70%) |
| Unhealthy for sensitive groups | 5 (1.37%) |
| Unhealthy for all | 0 (0.00%) |
|
| Worst pollutants |
|
| Carbon monoxide | 0 (0.00%) |
| Nitrogen dioxide | 0 (0.00%) |
| Ozone | 0 (0.00%) |