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What is most accurate air quality app?

The AirNow Mobile App, available on iPhones and Android phones, was created by the United States Environmental Protection Agency, which oversees air quality across the country. The app allows users to enter their ZIP code or city to get the most up-to-date information about air quality levels.

What are the six levels of air quality?

How does the AQI work? Daily AQI ColorLevels of ConcernValues of IndexGreenGood0 to 50YellowModerate51 to 100OrangeUnhealthy for Sensitive Groups101 to 150RedUnhealthy151 to 2002 more rows

Is PurpleAir accurate?

PurpleAir sensors (PASs) are low-cost tools to measure fine particulate matter (PM) concentrations and are now widely used, especially in regions with few regulatory monitors. However, the raw PAS data have docHub biases, so the sensors must be calibrated to generate accurate data.

Where can you find the best air quality?

Read on for the full list of 25 cities with the best air quality in the world and an analysis of what this data means. Zrich, Switzerland (0.49 g/m3) Perth, Australia (1.61 g/m3) Richards Bay, South Africa (2.38 g/m3) Hobart, Australia (2.55 g/m3) Reykjavk, Iceland (3.38 g/m3) Kryvyi Rih, Ukraine (3.42 g/m3)

What is the best air quality index?

How does the AQI work? Daily AQI ColorLevels of ConcernValues of IndexGreenGood0 to 50YellowModerate51 to 100OrangeUnhealthy for Sensitive Groups101 to 150RedUnhealthy151 to 2002 more rows

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