Smoke from wildfires from Canada has clouded much of the Northeast, leaving millions of Americans exposed to unhealthy levels of particulate matter. Here’s what you need to know about the dangers of wildfire smoke and why it’s so toxic to your health. What is considered a dangerous level of air quality? Air quality is measured by the Environmental Protection Agencies Air Quality Index (AQI), which ranges from 0 to 500. A higher level indicates a higher level of pollution and health concern. Levels below 100 are generally considered safe. Unhealthy…
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