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Good to moderate air quality expectedWeather Summary: Issued on Wednesday, March 10, 2010A high pressure ridge over Quebec and eastern Ontario during Wednesday is causing mostly sunny skies and light winds over most regions, except for increasing cloudiness over southern Ontario ahead of a developing low pressure trough west of the Great Lakes. Increasing east to southeasterly winds are expected with temperatures continuing warmer than seasonal values. Overnight, the cloudiness is forecast to move northward over southern Ontario with some scattered light precipitation ahead of a warm front.
Smog Alert by EmailSign up now to receive notification of Smog Alerts Smog, comprised of ozone and/or PM2.5, is primarily a summer phenomenon, occurring mostly in southern Ontario; however, PM2.5 can elevate smog levels during all months of the year. For this reason, the ministry reports the AQI hourly, seven days a week; and continues to provide air quality forecasts daily. |
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