Selected Air Quality Ratings
| Quality | Houston | Galveston/Texas City | Brazoria |
|---|---|---|---|
| Good Days | 122 (39.9%) | 263 (86.8%) | 263 (87.4%) |
| Moderate Days | 162 (52.9%) | 38 (12.5%) | 32 (10.6%) |
| Days Unhealthy for Select Groups | 20 (6.5%) | 1 (0.3%) | 6 (2.0%) |
| Unhealthy Days | 2 (0.7%) | 1 (0.3%) | 0 (0.0%) |
Source: U.S. Environmental Protection Agency.