Know your air – Amazon Smart Air Quality Monitor makes it easy to understand what’s in your indoor air. Track and measure – Keep tabs on 5 key factors: particulate matter (PM 2.5), volatile organic compounds (VOCs), carbon monoxide (CO), humidity, and temperature. Stay informed – Get an indication of current air quality from the color-coded LED, and an easy-to-understand air quality score in the Alexa app anytime. Get notifications – If Alexa detects poor air quality, you can get notifications on your phone or even announcements on Echo devices.