 "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.
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Latest Updates on Air Quality Index
Delhi's air quality remains in 'Poor' category: Is worst over for capital?
The neighbouring cities of Gurugram and Noida are now breathing easy as their air quality hovers in the "moderate" category, while Ghaziabad continues to struggle with poor air quality
 "Delhi's air quality remains in 'Poor' category: Is worst over for capital?")
Delhi's air in 'poor' category with AQI of 219, smog covers key NCR areas
Delhi's air quality worsened to the 'poor' category with an AQI of 219, smog blanketed NCR; authorities scaled down pollution measures from Grap-IV to Grap-II
 "Delhi's air in 'poor' category with AQI of 219, smog covers key NCR areas")
Punjab, Haryana impose Rs 2.3 cr penalties on farmers for stubble burning
Punjab and Haryana have imposed fines exceeding Rs 2.1 crore and Rs 21 lakh respectively, on farmers for stubble burning in 2024, with more than 50 per cent of penalties collected
 "Punjab, Haryana impose Rs 2.3 cr penalties on farmers for stubble burning")
Delhi AQI reaches 186 as authorities ease Grap-III and IV pollution curbs
As the air quality improved to 'moderate' from 'poor,' it is expected that it will continue for the next two to three days as most areas in Delhi reported moderate air quality this morning
 "Delhi AQI reaches 186 as authorities ease Grap-III and IV pollution curbs")
Highlights: Wad of currency notes recovered from Abhishek Manu Singhvi's seat; Dhankhar orders probe
Stay with us for all the major updates from around the world
 "Highlights: Wad of currency notes recovered from Abhishek Manu Singhvi's seat; Dhankhar orders probe")
Want clean air in Delhi? 5-star hotels turn air filtration into a 'service'
As Delhi battles high pollution levels, luxury hotels offer clean air through advanced filtration systems, turning guest rooms into spaces with AQI levels dramatically lower than the city's
 "Want clean air in Delhi? 5-star hotels turn air filtration into a 'service'")
SC eases Grap restrictions in Delhi, moves to Stage II due to improved AQI
The top court said that if AQI goes above 350. Stage-III measures will have to be immediately implemented, and if AQI crosses 400 on a given day, Stage-IV measures will have to be re-introduced
 "SC eases Grap restrictions in Delhi, moves to Stage II due to improved AQI")
Delhi's AQI improves to 161, pollution relief to continue for 2-3 days
Delhi's AQI came down to the 'moderate' category on Wednesday evening, with this period of relief expected to continue for the next two to three days
 "Delhi's AQI improves to 161, pollution relief to continue for 2-3 days")
Delhi's average AQI remains 'poor' while a few areas improve to 'moderate'
Supreme Court upholds GRAP-IV restrictions amid concerns over enforcement
 "Delhi's average AQI remains 'poor' while a few areas improve to 'moderate'")
Delhi's Nov PM 2.5 level reaches highest monthly avg in 8 yrs despite Grap
A report by the Centre for Research on Energy and Clean Air (CREA) highlighted that Delhi's PM2.5 concentration soared to an average of 249 micrograms per cubic metre in November
 "Delhi's Nov PM 2.5 level reaches highest monthly avg in 8 yrs despite Grap")
Delhi's air in 'poor' category with AQI of 274; SC retains Grap-IV measures
Despite Delhi's AQI improving to 274, the Supreme Court said that it will retain Grap-IV restrictions, citing the need for a sustained downward trend in air pollution levels
Grap IV hardly enforced? SC questions Delhi govt on air pollution crisis
The Supreme Court emphasised the need for a 'downward trend' in air pollution levels in Delhi NCR before considering easing restrictions under Grap-IV
 "Grap IV hardly enforced? SC questions Delhi govt on air pollution crisis")
Delhi's air quality records 'poor' for second consecutive day with 273 AQI
National capital sees marginal improvement from 'very poor' levels, but monitoring stations reveal alarming hotspots exceeding AQI 300
 "Delhi's air quality records 'poor' for second consecutive day with 273 AQI")
Delhi's battle with poor air quality continues; Noida's AQI improves
While Delhi struggles, its neighbouring areas are showing slight improvement. The air quality in Ghaziabad, Gurugram, and Noida was recorded in the 'poor' category
 "Delhi's battle with poor air quality continues; Noida's AQI improves")
Updates: New Maharashtra govt to be sworn in Mumbai at 5 pm on Dec 5; PM Modi to attend
Catch all the highlights from around the world here
 "Updates: New Maharashtra govt to be sworn in Mumbai at 5 pm on Dec 5; PM Modi to attend")
Delhi's air quality 'very poor' as haze lingers, pollution levels surge
Delhi's air quality remains in the 'very poor' category, with pollution levels surging across the city. Haze persists, and the AQI continues to hover above 300 in many areas
 "Delhi's air quality 'very poor' as haze lingers, pollution levels surge")
India faces CNG shortage, rising prices threaten clean air efforts in Delhi
India faces a severe CNG supply shortage, pushing prices up and threatening efforts to reduce air pollution in cities like Delhi. The rise in costs may shift consumers back to petrol and diesel
 "India faces CNG shortage, rising prices threaten clean air efforts in Delhi")
Delhiites continue to breathe in 'very poor' air as the AQI rises to 325
However, some areas reported an AQI of below 300 classifying the air quality as 'poor'
 "Delhiites continue to breathe in 'very poor' air as the AQI rises to 325")
Delhi Grap-IV curbs flouted: Report cites construction at officials' houses
A report by Supreme Court-appointed commissioners reveals ongoing construction at officials' homes in Delhi and NCR, violating pollution curbs under Grap-IV
 "Delhi Grap-IV curbs flouted: Report cites construction at officials' houses")
Delhi's air quality returns to a 'very poor' category with AQI at 303
Air quality in Delhi-NCR remains a concern, with several key areas in the national capital classified as 'very poor' and notable fluctuations in pollution levels
 "Delhi's air quality returns to a 'very poor' category with AQI at 303")
