Air Quality Stations

The air monitoring stations measure up to 6 common pollutants like: ground-level ozone fine particulate matter nitrogen dioxide carbon monoxide sulphur dioxide total reduced sulphur compounds The Ministry of the Environment, Conservation and Parks continually monitors air quality across Ontario. We use this information to: inform the public about outdoor ambient air quality through the Air Quality Index (AQI) and Smog Advisory program assess Ontario's air quality and evaluate long-term trends identify areas where pollutant levels are exceeded identify the origins of pollutants develop air policy provide quantitative measurements to reduce specific pollution sources determine the significance of pollutants from long-range transports and their effects provide air quality researchers with data to link environmental and human health effects to air quality