Use the following links to see pollutant graphs in a variety of formats. Each will open in a new window. Weekly Stacked Pollutant Graphs Ozone Nitrogen Dioxide Sulphur Dioxide Carbon Monoxide PM10 PM2.5 Overlay Graphs by Pollutant One Week Plots Ozone Nitrogen Dioxide Sulphur Dioxide PM10 Particles PM2.5 Particles Two week plots Ozone Nitrogen Dioxide Sulphur Dioxide PM10 Particles PM2.5 Particles Three week plots Ozone Nitrogen Dioxide Sulphur Dioxide PM10 Particles PM2.5 Particles Four week plots Ozone Nitrogen Dioxide Sulphur Dioxide PM10 Particles PM2.5 Particles