05/20/2012 12:24 EDT | Updated 07/20/2012 05:12 EDT

Smog advisory covers dozens of Ontario communities

Dozens of Ontario communities were under a smog advisory late Sunday afternoon, which was expanded to include Ottawa and other cities in the eastern part of the province.

The advisory from Environment Canada initially encompassed mostof southwestern Ontario, from the border cities of Windsor and Sarnia, all the way through to Toronto and on to cottage country. It extended as far east as Kingston, including Peterborough and Belleville.

However, Environment Canada later issued a smog advisory for cities in eastern Ontario, including Brockville, Cornwall and Ottawa.

As a result of the smog advisory, health officials say it’s not a good day to do strenuous exercise and they are asking people to “spare the air” by reducing vehicle use and avoiding the use of gas-powered lawn mowers and tools.

A smog advisory is also in effect for parts of northern Ontario, including Sault Ste. Marie, Greater Sudbury, Elliot Lake, Killarney, Manitoulin and North Bay.

A full list of the affected communities can be viewed on the Environment Canada website.

Looking ahead to Monday, Environment Canada said that higher pollution levels were expected to disperse in the affected northern communities, while they may persist in parts of southern and eastern Ontario.

CBC meteorologist Jay Scotland said that the Greater Toronto Area is expected to see continued high temperatures and light winds on Monday, a recipe for “poor air quality.”