Did you know?
Since the Clean Air Act was passed in 1970, air quality has improved in many regions of our country. However, even after 30 years of progress, more than 130 million Americans continue to breathe dirty, unhealthy air.
The Sierra Club is committed to cleaning up our nation's air and reducing exposure to air toxics. From keeping EPA on schedule to fighting weak standards to cleaning up big polluters, like coal-fired power plants, we work with communities to make a difference. After all, every day should be a clean air day.