A current study in the Journal of Geophysical Research - Atmospheres reports that ozone pollution episodes in the Midwest and Northeastern US are affected by climate change.
See: Wu S, Mickley LJ, et al. (2008). Effects of 2000–2050 global change on ozone air quality in the United States. Journal of Geophysical Research - Atmospheres;113:D06302. doi:10.1029/2007JD008917
