Is there any place that maps air quality throughout Toronto?
This site here (http://airqualityontario.com/reports/index.cfm) provides reports from four different points in Toronto. (Seems like you have to click on "Today's Current Pollutant Concentrations" for each one to find out exactly where they are.) Looks like Toronto North (Yonge north of Finch) is somewhat better on average than Toronto Downtown (Bay & Wellesley), and it looks like it's generally better when it's bad, but not all that consistently better. (I always wonder how much of the differences in these kinds of things have to do either with factors too local to be useful and/or measuring artefacts, though.)
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This site here (http://airqualityontario.com/reports/index.cfm) provides reports from four different points in Toronto. (Seems like you have to click on "Today's Current Pollutant Concentrations" for each one to find out exactly where they are.) Looks like Toronto North (Yonge north of Finch) is somewhat better on average than Toronto Downtown (Bay & Wellesley), and it looks like it's generally better when it's bad, but not all that consistently better. (I always wonder how much of the differences in these kinds of things have to do either with factors too local to be useful and/or measuring artefacts, though.)