Information identified as archived is provided for reference, research or recordkeeping purposes. It is not subject to the Government of Canada Web Standards and has not been altered or updated since it was archived. Please "contact us" to request a format other than those available.
|
Findings > Air quality
ContextGround-level ozone, a key component of smog, has significant negative effects on human health, on the natural environment and, consequently, on economic performance. Other important air pollutants include fine particles, sulphur oxides and carbon monoxide. More >> Status and trendsNational status and trendsIn general, the health impacts of ozone worsen as concentrations increase. Seasonal ground-level ozone concentrations averaged approximately 40 parts per billion (ppb) in Canada in 2003 (Figure 1) and concentrations rose 16% from 1990 to 2003. More >> What's next?Future reports will address other air pollutants as well as ground-level ozone. Air contaminants that pose human health risks include, among others, fine particles, sulphur oxides, and carbon monoxide. More >> |
|