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Air quality

smoke from houses

WHO tightens air quality guidelines

WHO releases stricter air quality guidelines to protect human health. The new standard for fine particles (PM2.5) is halved, stressing that exposure to PM2.5 is a major health risk.

breakpoints PM2.5 AQIs

Green in India means red in Norway

We’ve attempted to compare the different PM2.5 breakpoints in selected air quality indices. It turns out a green level does not mean the same around the world.