I was reminded of a short essa that I wrote in 1979 [thanks to Emmanuel Ekanem, a research student in the United Kingdom for reminding me of it]. The article is
Pielke, R.A. 1979: Air Pollution – A National Concern. Bull. Meteor. Soc., 78, 1461.
This article urged a broadening of the assessment of risks in weather to include air pollution as a threat. In terms of threats from air pollution (without considering any climate effects), it causes more loss of life in the United States, than the other weather hazards.