The air quality index measures PM2.5, less than 2.5 microns particles, to determine the intensity of air pollution in cities.

NAQI (National Air Quality Index) is tool that uses numbers to simplify air quality data by classifying pollution levels into 6 categories - good, satisfactory, moderate, poor, very poor and severe, ...

NAQI (National Air Quality Index) is tool that uses numbers to simplify air quality data by classifying pollution levels into 6 categories - good, satisfactory, moderate, poor, very poor and severe, ...

The index ranges from 0 to 500 and uses a color coded system: As of Monday evening, the AQI was between 30 and 60 throughout L.A. County — in the “good” or “moderate” range — according ...

The air quality index (AQI) in many LA regions looks good, but that doesn't mean the air is safe. Why it matters: The AQI in your weather app doesn't account for all pollutants caused by wildfires.

The Centre's panel on Delhi-NCR's air quality invoked stage 4 of the Graded Response Action Plan (GRAP) on Wednesday, following a sharp decline in air quality due to adverse weather condition.

School students wait for transport amid dense morning fog(PTI) Calm winds, low temperatures and foggy conditions allowed the accumulation of pollutants in the region, with the air quality index ...

Indicators like the Air Quality Index (AQI), commonly used to track air pollution levels, provide a rough sense of the pollution floating in the skies. But those types of indicators don't capture some ...

Delhi's AQI on Thursday dropped to 302, categorised as "Very Poor," from "Severe " levels recorded earlier this week. On Friday, the overall AQI stood at 294. The fog situation seems to have ...

Arizona is the only state with an air quality index that falls in the “unhealthy ... Daily reports are available by ZIP code at airnow.gov. Opinion:Arizona has horrible air quality, from ...

The Air Quality Index, often referred to as AQI, is a federal measure of the amount of air pollution, reported on a six-color spectrum from green (good) to hazardous (maroon). There are five ...

At 4 pm on Sunday, the Delhi AQI was recorded at 278, 72 points below the 350 mark, which triggers the GRAP 3 restrictions. The GRAP 3 restrictions, revoked on Sunday, were enforced on January 9 as ...