 "What is Air Quality Index (AQI)")
Air Quality Index
What is Air Quality Index (AQI)
The air quality index (AQI) is an index for reporting air quality on a daily basis. It is a measure of how air pollution affects one's health within a short time period. The purpose of the AQI is to help people know how the local air quality impacts their health. The Environmental Protection Agency (EPA) calculates the AQI for five major air pollutants, for which national air quality standards have been established to safeguard public health.
Read More
Latest Updates on Air Quality Index
Expanding green cover key to improving Delhi-NCR air quality: Supreme Court
The Supreme Court observed that expanding green cover is a sustainable, long-term measure to improve Delhi-NCR's air quality as it reconstituted an expert panel for afforestation efforts
 "Expanding green cover key to improving Delhi-NCR air quality: Supreme Court")
Delhi air quality worsens to 'poor' levels again despite rising mercury
Nineteen stations record poor air quality as overall AQI rises to 203; temperatures set to climb above normal and morning mist likely to persist over the coming week
 "Delhi air quality worsens to 'poor' levels again despite rising mercury")
Delhi AQI 'moderate'; GRAP stage-II curbs revoked as air quality improves
Light showers on Wednesday helped improve Delhi's air quality to moderate; CAQM lifts stage-II GRAP curbs as IMD forecasts AQI to stay in poor to moderate range over the next few days
 "Delhi AQI 'moderate'; GRAP stage-II curbs revoked as air quality improves")
Delhi air quality worsens to 'poor' despite favourable weather; AQI at 259
Air quality dips back into 'poor' category with several monitoring stations recording 'very poor' levels; IMD forecasts rising temperatures for today, and light rain with gusty winds on February 18
 "Delhi air quality worsens to 'poor' despite favourable weather; AQI at 259")
Delhi AQI remains 'poor' amid hazy conditions; mercury to touch 30°C today
City records overall AQI of 218 with 24 stations in 'poor' category; IMD sees warmer days, clear skies and night-time mist, maximum temperature likely to reach 30 degrees Celsius today
 "Delhi AQI remains 'poor' amid hazy conditions; mercury to touch 30°C today")
Delhi air quality remains 'poor' as smog persists amid rising temperatures
Delhi's air quality remained in the 'poor' category on Sunday morning with AQI at 221, as smog persisted despite easing winter chill and rising minimum temperatures across the capital
 "Delhi air quality remains 'poor' as smog persists amid rising temperatures")
Delhi AQI slips into 'poor' category; IMD forecasts rising temperatures
Light haze envelops Delhi as overall AQI reaches 209 at 8 am; 26 monitoring stations record 'poor' air quality and 13 remain 'moderate' even as weather remains and temperatures rise
Delhi air quality improves to 'moderate' as mercury rises; AQI at 184
The capital recorded a gradual improvement in air quality, but 16 stations remained in the poor category despite the overall AQI slipping to 'moderate' levels
Delhi AQI improves but remains 'poor'; haze lingers while mercury rises
Several stations report better readings compared to the previous day, yet Delhi's overall AQI stays 'poor' as misty mornings continue and maximum temperatures climb
 "Delhi AQI improves but remains 'poor'; haze lingers while mercury rises")
Delhi air quality remains poor; IMD forecasts rise in minimum temperature
Delhi's overall AQI recorded at 295 in the poor category; IMD forecasts a rise in minimum temperature with mainly clear skies and misty conditions during morning hours in the national capital
 "Delhi air quality remains poor; IMD forecasts rise in minimum temperature")
Delhi AQI update: Air quality worsens, 11 stations see 'very poor' levels
Delhi's air quality worsened to poor levels, with several hotspots reporting very poor AQI, even as the government cited a decline in the number of 'severe' air quality days this winter
 "Delhi AQI update: Air quality worsens, 11 stations see 'very poor' levels")
Delhi wakes to shallow fog as air quality slips into 'poor' category
Calm winds and shallow fog marked the morning in Delhi as the city's air quality deteriorated, with overall AQI recorded at 209 in the 'poor' category, slipping from 'moderate' levels a day earlier
 "Delhi wakes to shallow fog as air quality slips into 'poor' category")
Delhi air quality improves slightly but remains poor as smog persists
Delhi's air quality improved marginally on Sunday but remained in the moderate-to-poor range as smog lingered, with chilly weather and fog expected through the week
 "Delhi air quality improves slightly but remains poor as smog persists")
Delhi air quality improves further but AQI still 'poor' in most areas
Overall AQI improved to 226, with 25 monitoring stations in the 'poor' category and 14 'moderate'; none recorded 'very poor' air quality, unlike the previous day when 18 stations fell in that category
Delhi AQI today: Air quality improves slightly but remains 'poor'
A marginal dip in pollution levels was recorded across Delhi on Thursday morning, though air quality stayed in the poor category with smog lingering in several areas despite weather-related relief
Delhi AQI slips to 'very poor'; IMD issues alert for dense fog conditions
Air quality in the national capital worsened to very poor category amid dense fog, while the IMD issued a yellow alert warning of reduced visibility, thunderstorms and gusty winds in isolated areas
 "Delhi AQI slips to 'very poor'; IMD issues alert for dense fog conditions")
Delhi air quality worsens to 'poor' after brief respite; AQI at 256
Early morning fog sharply reduced visibility across the capital, slowing traffic, while flights at IGI Airport operated under low-visibility protocols as the AQI remained in the poor category
 "Delhi air quality worsens to 'poor' after brief respite; AQI at 256")
Delhi air quality improves to 'moderate' after rain; AQI drops to 188
Dense fog covered Delhi on Monday, but rainfall and improved wind conditions helped bring the city's overall air quality down to the 'moderate' category, offering brief relief after days of 'poor' air
Delhi air quality worsens, remains 'poor'; IMD issues alert for rain, snow
Delhi recorded 'poor' air quality on Saturday morning as dense to very dense fog reduced visibility across north and central India, affecting several airports
 "Delhi air quality worsens, remains 'poor'; IMD issues alert for rain, snow")
Delhi air quality improves to 'poor' as rain forecast offers hope of relief
Air quality in Delhi showed marginal improvement on Friday, while IMD's forecast of rain and thunderstorms raised hopes of further respite from the serious winter pollution