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Clean-air buying guides

Cleaner air at home in the Vatican

Picked by tested clean-air delivery rate (CADR), noise and running cost, from independent test labels. No brand pays to be listed.

• The best air purifiers for wildfire smoke and smog

  Air purifiers that keep up with wildfire smoke and winter smog, ranked by verified smoke CADR, with the room each one clears on a smoky day.

  Read the guide
• The best air purifiers under $200

  Good HEPA air purifiers under $200 at the makers' own prices, compared on verified clean air, room size and what the filters cost each year.

  Read the guide
• NIOSH-approved N95 masks for smoke and smog

  NIOSH-approved N95 masks and P100 respirators for smog and smoke, and how to get the fit right. Cloth and surgical masks do little against PM2.5.

  See the masks

Frequently asked

Air quality in the Vatican: your questions answered