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An air quality index (AQI) is an indicator developed by government agencies [1] ... Each state and territory publishes air quality data for individual monitoring ...
Since 1999, the EPA has used the air quality index (AQI) to communicate air pollution risk to the public, on a scale from 0 to 500, with six levels from Good to Hazardous. [10] (The previous version was the Pollutant Standards Index (PSI), which did not incorporate PM2.5 and ozone standards.)
But earlier in 2024, multiple states issued air quality warnings as smoke from “out of control” wildfires in Canada blew across the border for the second year in a row. The smoke makes people ...
The EPA says that in this range, air quality is acceptable, but there may be a health risk for some people, such as folks who are "unusually sensitive to air pollution." When the index is between ...
The January 2024 version of the WHO database contains results of ambient (outdoor) air pollution monitoring from almost 5,390 towns and cities in 63 countries. Air quality in the database is represented by the annual mean concentration of particulate matter (PM10 and PM2.5, i.e. particles smaller than 10 or 2.5 micrometers, respectively). [1 ...
The Air Quality Index reached Code Red this week because of smoke from the Canadian wildfires that is drifting over the state.
PM 2.5 AQI of US monitors, calculated utilizing NowCast, courtesy US EPA PM2.5 AQI map, calculated utilizing NowCast, courtesy US EPA. The PM (particulate matter) NowCast is a weighted average of hourly air monitoring data used by the United States Environmental Protection Agency (USEPA) for real-time reporting of the Air Quality Index (AQI) for PM (PM 10 - particles less than 10 micrometers ...
Northwell Health partnered with Stacker to analyze the most polluted cities in the United States, using EPA and American Lung Association data. About 2 in 5 Americans live in areas with unhealthy air.