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Air Quality Awareness Week 2019 – Update: ‘Air Quality Index & Sensors’

19:57 EDT 1 May 2019 | Science Blog

Air Quality Awareness Week 2019 – Update: ‘Air Quality Index & Sensors’Air is either healthy to breathe or it isn’t. Within the “isn’t” designation, based on U.S. Air Quality Index (AQI) information, there is the “Moderate” category (AQI of between 51 and 100), the “Unhealthy for Sensitive Groups” reading (101-150), the “Unhealthy” classification (151-200), the “Very Unhealthy” declaration (201-300) and the “Hazardous” level (301 and above). […]

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