Delhi Air Pollution Update: AQI in 'very poor' category in several areas; a summary of key readings from Delhi, Noida, Gurugram

Delhi Air Pollution News: Delhiites and their neighbors continued to gasp for fresh air amid excessive levels of air pollution as a thick layer of smog covered several regions in the National Capital Region (NCR). The overall Air Quality Index (AQI) was recorded in the 'very poor' category in the national capital on Tuesday morning—levels of 301-400 indicate a 'very poor' quality of air, most regions in and around the city were recorded in the 'poor' to 'very poor' categories.

NCR AQI

Here are some of the AQI readings from different neighborhoods in the National Capital Region (NCR)—which includes Noida, Gurugram and Ghaziabad—at 5 pm on Tuesday, according to information available on the Central Pollution Control Board (CPCB) portal (airquality.cpcb.gov.in):

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Delhi Area-wise AQI Readings

Gurugram Area-wise AQI Readings

Noida & Greater Noida Area-wise AQI Readings

Ghaziabad Area-wise AQI Readings

What do different AQI levels mean?

Here's a breakup of what the AQI readings tell about the quality of air in a given region over a particular period of time:

• 0-50 - Good
• 51-100 - Satisfactory
• 101-200 - Moderate
• 201-300 - Poor
• 301-400 - Very Poor
• 401-500 - Severe

AQI readings capture changes in the quality of air in a particular region over a given period factoring in several factors including the concentration of pollutants and their likely impacts on health.