![]() These pollutants are considered the best indicators of the health risks associated with the mix of outdoor air pollutants in Canadian communities. The AQHI is calculated using the concentrations of 3 air pollutants that are harmful to health: actions you can take to protect your health.the health risks associated with local air pollution. ![]() The air quality health index (AQHI) is a tool used to tell you about: How to protect your health when experiencing wildfire smoke and extreme heat together Air quality health index and wildfire smoke ![]() This means you may be exposed to wildfire smoke and extreme heat at the same time. The most intense fires often occur when the weather is the hottest. In Canada, wildfire season can happen at the same time as periods of extreme heat. Air pollution may be present even when you can’t see or smell smoke. As smoke levels increase, your health risks increase. This means that smoke can impact your health even at very low levels. There’s no evidence of a safe level of exposure for some of these pollutants. These fine particles pose the main health risk from wildfire smoke. It is the fine particles (PM 2.5), not visible to the human eye, that get deep into our lungs and bloodstream. Wildfire smoke is a complex mixture of gases, particles and water vapour that contains pollutants such as: Smoke from wildfires can be a major source of air pollution for people in Canada. This means smoke from other parts of the world can impact communities in Canada. Wildfire smoke may be carried hundreds or thousands of kilometres from the fire zone. As wildfires burn through forests and grasslands, they produce dense smoke. Wildfire season typically runs from early April to late October. This is expected to continue as Canada is warming much faster than the rest of the world, providing ideal conditions for more frequent and longer wildfires. Communities across Canada regularly experience wildfire smoke events.
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