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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 ...
An air quality index (AQI) is an indicator developed by government agencies [1] ... 8 hours 9 ppm Nitrogen dioxide 1 hour 0.12 ppm 1 year 0.03 ppm Ozone
Air quality guideline. 1 language. ... For nitrogen dioxide (NO 2), the guidelines set 10 μg/m 3 for the annual mean or 25 μg/m 3 for a 24-hours mean. [2]
A woman jogs with a dog along the Hudson River shortly after sunrise, as haze and smoke caused by wildfires in Canada hang over the Manhattan skyline, in New York City, New York, U.S., June 7, 2023.
These sections require the EPA "(1) to list widespread air pollutants that reasonably may be expected to endanger public health or welfare; (2) to issue air quality criteria for them that assess the latest available scientific information on nature and effects of ambient exposure to them; (3) to set primary NAAQS to protect human health with ...
Recently, drive-by air pollution sensing systems have emerged as a promising approach for air quality monitoring, utilizing sensors mounted on taxis, buses, trams, and other vehicles. [26] In particular, buses have garnered considerable attention as a mobile sensing platform due to their widespread availability and extensive geographical coverage.
A man was left in critical but stable condition after he was pushed onto the subway tracks at the 18th Street station in Manhattan's Chelsea neighborhood. The 45 -year-old victim was pushed onto ...