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The air quality forecasts presented in the CNN bulletins are provided by the Copernicus Atmosphere Monitoring Service (CAMS).
Smoke from raging Canadian wildfires can be seen from space as it gathers over the U.S. Midwest and darkens skies in Europe over Spain, Portugal and the U.K.
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Canada wildfires: How to keep yourself safe as smoke from deadly inferno reaches Europe - MSNAn AQI below 50 is considered "healthy," 50 to 100 is "moderate," 100 to 150 is unhealthy for "sensitive groups," and anything above 150 is hazardous for everyone.
The air quality forecasts presented in the CNN bulletins are provided by the Copernicus Atmosphere Monitoring Service (CAMS).
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