Yes. From 2008-2015, PM2.5 data collected from the US Embassy shows the capital’s air has averaged 111 micrograms in the winter versus 92 micrograms for the rest of the year. Even so, it is still way over the WHO limit of 25 micrograms! Click here to read more details: https://smartairfilters.com/en/blog/winter-air-is-coming/
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