Air Pollution.
The impact of some air pollutants on health appears to be stronger during summer months or during high temperatures, but this is not a universal finding.
Ozone levels tend to be higher at higher temperatures and some studies have suggested that ozone contributes to the excess mortality observed.
Climate change is likely to affect the risk of forest fires, which in some locations (eg, Malaysia and Brazil) have been associated with the increased risk of outpatient visits for respiratory dis- ease.
An increase in emergency department visits for asthma, bronchitis, and chest pain occurred after the 1998 wild fires in Florida.