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Summary of Smog Advisories: 2003 - 2014*

Air Quality Forecast Region2014*20132012201120102009200820072006200520042003
Adv.DaysAdv.DaysAdv.DaysAdv.DaysAdv.DaysAdv.DaysAdv.DaysAdv.DaysAdv.DaysAdv.DaysAdv.DaysAdv.Days
Algonquin 0000130000110013135163624
Bancroft - Bon Echo 0012250015242341313721612512
Barrie - Orillia - Midland 0000715111424378215111339512411
Belleville - Quinte - Northumberland 0012613112824489245121342510512
Brockville - Leeds and Grenville 00122400122424352572451049
Burk's Falls - Bayfield Inlet 000024000011001324824511410
City of Hamilton 001271822282461310315111345615615
City of Ottawa 0012120012241124257251135
City of Toronto 001281611282461311295111448614512
Cornwall - Morrisburg 0012120012242435257251135
Dufferin - Innisfil 0000715111524379275111344513512
Dunnville - Caledonia - Haldimand 000061611282441112315111345616514
Elgin 0000718242102461513374131245616515
Elliot Lake - Ranger Lake 0000240000000013134120015
Greater Sudbury and Vicinity 0000240000110013247200014
Grey - Bruce 0000614112824129224101032410411
Haliburton 000036001424126174101030612410
Halton - Peel 001281711282461311315111448614513
Huron - Perth 000071811210243712274111244616512
Kingston - Prince Edward 001251111282448923512103251049
London - Middlesex 000071811292451112274121245616514
Manitoulin - Northshore - Killarney 0000240000110013246180014
Niagara 000061611282441110295111345513513
North Bay - West Nipissing 0000240000110013247202414
Oxford - Brant 000061611282441112315111346616514
Parry Sound - Muskoka - Huntsville 0000510001424258214101030511410
Peterborough - Kawartha Lakes 0012613002824368214101238612512
Prescott and Russell 0012120012241124257251135
Renfrew - Pembroke - Barry's Bay 0012120012240025135173624
Sarnia - Lambton 0000718242102441013294121346616514
Sault Ste. Marie - Superior East 0000130000000013134100015
Simcoe - Delhi - Norfolk 0000616112102441112315111346616514
Smiths Falls - Lanark - Sharbot Lake 0012120012241124256194837
Stirling - Tweed - South Frontenac 0012360028242351325825510512
Waterloo - Wellington 00006151128243711295111345513512
Windsor - Essex - Chatham - Kent 0000824482103551213384141346616617
York - Durham 00128161128245911295111448614512
ONTARIO 00121230593123581713396171553820719

How many smog advisories were issued in previous years?

The ministry monitors air pollution levels and issues smog advisories when there is strong likelihood that widespread elevated and persistent smog levels are expected.

Spreadsheet (CSV) format for 2014 to 2003 Advisory Data: OntarioSmogAdvisories_2014_2003.csv

Full-page Table: Smog Advisories Data 2014 to 2003 (for easier printing)

Ontario Smog Advisories since 2003

Here is a summary of smog advisories issued for Ontario by the ministry since 2003:

Smog advisories issued for Ontario by the ministry since 2003
Year Number of Advisories Total Number of Days
2003 7 19
2004 8 20
2005 15 53
2006 6 17
2007 13 39
2008 8 17
2009 3 5
2010 3 12
2011 5 9
2012 12 30
2013 1 2
2014* 0 0

* as of September 23, 2014.