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The Air Quality Health Index (AQHI) is a scale designed in Canada to help understand the impact of air quality on health. It is a health protection tool used to make decisions to reduce short-term exposure to air pollution by adjusting activity levels during increased levels of air pollution.
The January 2024 version of the WHO database contains results of ambient (outdoor) air pollution monitoring from almost 5,390 towns and cities in 63 countries. Air quality in the database is represented by the annual mean concentration of particulate matter (PM10 and PM2.5, i.e. particles smaller than 10 or 2.5 micrometers, respectively). [1 ...
Growing evidence that air pollution—even when experienced at very low levels—hurts human health, led the WHO to revise its guideline (from 10 μg/m 3 to 5 μg/m 3) for what it considers a safe level of exposure of particulate pollution, bringing most of the world—97.3 percent of the global population—into the unsafe zone.
Maps are created to show air pollution levels across Canada for each pollutant and the relevant distribution of the population across Canada. The exposure of Canadians to air pollution is estimated by combining the air pollution and population maps. Health Canada uses a computer model called the Air Quality Benefits Assessment Tool (AQBAT).
Below is a list of 526 cities sorted by their annual mean concentration of PM2.5 (μg/m 3) in 2022. [1] [2] By default the least polluted cities which have fewest particulates in the air come first. Click on the arrows next to the table's headers to have the most polluted cities ranked first. Please note that constraints exist in this type of ...
Air pollution in Canada is contributed by industrial and vehicular emissions, agriculture, construction, wood burning, and energy production. [1] Ongoing monitoring of Canada's Air Pollutant Emissions Inventory shows that 14 of the 17 of the air pollutants monitored are decreasing compared to historical levels.
This index pays particular attention to people who are sensitive to air pollution. It provides them with advice on how to protect their health during air quality levels associated with low, moderate, high and very high health risks. The AQHI provides a number from 1 to 10+ to indicate the level of health risk associated with local air quality ...
The first Canadian National Ambient Air Quality Objectives were developed in the mid-1970s. These objectives were set for various air pollutants.The NAAQO had three levels indicating severity (maximum desirable, acceptable and tolerable levels) and also evaluated effect levels (maximum desirable, acceptable and tolerable levels).