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Home / Climate / Developing Ambient Air Quality Objectives For Canada / Ambient Air – Appendix 2

Ambient Air – Appendix 2

Developing Ambient Air Quality Objectives For Canada

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Country Jurisdiction Ozone - 1 hr Ozone - 8 hr Ozone - 24 hr Ozone -annual
Canada Canada wide Standard   65 ppb(by 2010)    
Health Canada

20 ppb non-accident mortality,

25 ppb respiratory hospitalization (6)		      
British Columbia 100/160/300 µg/m3 (1) 65 µg/m3 30/50 µg/m3(2) 30 µg/m3
British Columbia - Fraser Valley 51/82 ppb (2)     65 ppb
Alberta 160 µg/m3or 82 ppb      
Manitoba 100/160/400 µg/m3 (1) 65 ppb    
Ontario 165 µg/m3      
Quebec 82 ppb      
City of Montreal 82 ppb 38 ppb 25 ppb 15 ppb
Nova Scotia 160 µg/m3or 8.2 ppb      
Newfoundland and Labrador 160 µg/m3 87 µg/m3    
Saskatchewan   65 ppb    
New Brunswick   65 ppb    
Northwest Territories   65 ppb    
United States Federal 0.12 ppm(5) 0.08 ppm    
Europe EU- ozone directive 180 µg/m3240 µg/m3 120 µg/m3    
Global World Health Organization   100 µg/m3    
 

Notes:

1 - Desirable / Acceptable / Tolerable

2 - Desirable / Acceptable

3 - Information threshold

4 - Alert threshold

5 - Applies only in limited areas

6 - Reference levels

8. This is the basis of the current Canada-wide Standard for particulate matter and ozone, in which the long-term air quality management goal is to minimize the risks of these pollutants to human health and the environment.

9. An important commitment of the CWS for PM and ozone is the implementation of a "keeping-clean-areas-clean" program in areas with ambient concentrations below the CWS levels.