The results of the Clean Air Act overall can be described as what?

The Clean Air Act is widely regarded as a success due to its significant impact on improving air quality in the United States. Since its implementation, the Act has led to substantial reductions in harmful pollutants, such as sulfur dioxide, nitrogen oxides, and particulate matter, resulting in better public health outcomes and environmental conditions. The establishment of national air quality standards has helped ensure that air remains safe for human health and the environment.

Additionally, the Act has spurred technological advancements and innovations in pollution control measures, encouraging industries to adopt cleaner practices. Overall, the lasting improvements in air quality and public health metrics highlight the effectiveness of the Clean Air Act, confirming its status as a successful legislative effort in environmental regulation.