T he air quality in Delhi-NCR is in the ‘severe plus’ category with the Air Quality Index (AQI) in most stations touching the 500-mark today, November 19. This is the seventh day that NCR has ...

The scale has six color-coded levels of concern and runs from 0 to 500 AQI value. Each code has a definitive "values of index" range and corresponds to different levels of health concerns.

The toxic air in the United States this week has flirted with the upper range of the 500-point scale. In the past decade, there have been times when the air quality was even worse.

The EPA's air-quality index (AQI) measures how safe, unhealthy, ... The scale spans from numbers 0 to 500. A higher AQI value signifies a higher level of air pollution and a greater health risk.

The Air Quality Index displayed on AirNow.gov shows ... Weather Service says that the Environmental Protection Agency calculates the Air Quality Index — a value between 0 and 500 — based on ...

A thick layer of smog engulfed the National Capital on Sunday, and the Air Quality Index (AQI) continued to deteriorate, crossing the 500 mark, two days after Diwali. The government may soon ...

The EPA's AQI ranges from 0 to 500 and represents the measurement of these five different major pollutants regulated by the Clean Air Act. Newsletters Games Share a News Tip. Featured.

As per official statistics, 20 monitoring stations throughout the city detected AQI levels hitting the highest 500 mark by Monday evening. Furthermore, due to the GRAP Stage 4 restrictions ...

On Tuesday morning, around 9.30 am, at least 18 stations in Delhi reported an air quality index (AQI) of 500, the highest value on the pollution measurement metric.

To measure this, the U.S. Environmental Protection Agency calculates a daily air quality index, known as the AQI, on a scale of zero to 500. The AQI measures anything from zero to 50 as healthy ...

This airnow.gov map shows the air quality index in Upstate New York as of 7 a.m. Wednesday, June 7, 2023. ... showing air pollution between 301 and 500 AQI (air quality index).

Hunterdon and Essex counties had the worst air quality index at 405 and 397 respectively on the 0-500 air quality index, according to a live map from fire.airnow.gov.