Cleanest/Best Facilities in the US Percentile Dirtiest/Worst Facilities in the US 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Section 1: Exposures Ozone 1-hour average concentration: Ozone 8-hour average concentration: PM-2.5 24-hour average concentration: PM-2.5 annual average concentration: PM-10 annual average concentration: These rankings are relative to the entire U.S. See rankings within just this state.
These rankings are relative to the entire U.S. See rankings within just this state.
