Air pollute stats for Cass Co in 2004
| County | Cass Co |
| State | Nebraska |
| Data from year | 2004 |
| Total number of days monitored | 365 |
| Good air | 329 (90.14%) |
| Moderate air | 36 (9.86%) |
| Unhealthy for sensitive groups | 0 (0.00%) |
| Unhealthy for all | 0 (0.00%) |
|
| Worst pollutants |
|
| Carbon monoxide | 0 (0.00%) |
| Nitrogen dioxide | 0 (0.00%) |
| Ozone | 0 (0.00%) |