Using EPA's Air Explorer, a collection of visualization tools for air quality analysis, the following images of air quality index in relation to ozone and PM 2.5 levels for Baltimore and EPA region 3 were produced. Ozone is a pollutant and a contributor to smog, which can trigger or exacerbate asthma, among other problems, in humans. Particulate matter that is 2.5 micrometers or smaller can go deep into the lungs, and also contribute to asthma as well as lung problems. Both of these are expected to increase significantly as temperatures increase due to climate change. The trend for 2000-2010 shows that in general, Baltimore has more dangerous AQI days and higher amounts of ozone and PM 2.5 present. The time frame of peak ozone and PM 2.5 levels appears to have been changing from the earlier summer months to the later ones. This data confirms an association between temperature and ozone and PM 2.5, and may be useful in projecting ozone and PM 2.5 levels in the future.