GRAP, Delhi and air quality index

Delhi-NCR pollution: GRAP Stage IV revoked as air quality improves; what’s allowed and what’s not
During winters, the Delhi-NCR region enforces restrictions under GRAP, which categorises air quality into four stages -- Stage I (poor, AQI 201-300), Stage II (very poor, AQI 301-400), Stage III (severe, AQI 401-450), and Stage IV (severe plus, AQI above 450).
Delhi air quality drops to 'very poor' category, Grap-IV measures lifted
The stringent measures under the stage-IV of the Grap in Delhi were lifted on Tuesday, following an improvement in the AQI
Delhi Pollution: GRAP-4 Measures Revoked As Air Quality Improves Amid Light Rains
The Commission for Air Quality Management has revoked Stage IV of the Graded Response Action Plan (GRAP) for the National Capital Region but will keep measures under Stages I, II, and III in place.
Delhi AQI: Stage IV curbs removed as air quality improves, lower-stage measures tightened
The decision comes after Delhi's Air Quality Index (AQI) improved to 369 ('Very Poor') at 4 PM on December 24, down from a peak of 401 ('Severe') recorded on December 16.
GRAP 4 Delhi: Cleaner air in Delhi-NCR! Stage IV air quality measures lifted as AQI improves
The Central Government's air quality monitoring body has repealed Stage IV ('Severe+') Graded Response Action Plan (GRAP) measures in Delhi and the National Capital Region (NCR) due to improved air quality.
Air quality better, Grap 4 lifted in Delhi but major curbs stay
Following two days of severe pollution, Delhi's air quality improved to the very poor range at 369, prompting CAQM to revoke GRAP Stage-IV restriction
Air Quality Relieves Delhi: Stage IV Curbs Lifted
Delhi-NCR's air pollution levels have improved, leading to the lifting of Stage IV restrictions under the Graded Response Action Plan. The 24-hour average Air Quality Index recorded a decline, standing at 369 at 4 pm.
CAQM revokes GRAP-IV restrictions as Delhi’s AQI improves
The Commission for Air Quality Management (CAQM) in the National Capital Region (NCR) and adjoining areas revoked Stage IV restrictions under the Graded Response Action Plan (GRAP) on Tuesday, following a notable decline in pollution levels.
Delhi pollution: Centre lifts GRAP 4 restrictions in NCR as air quality improves
Stage 4 GRAP measures had been in force across NCR since December 16, following a sharp deterioration in air quality.
Central panel withdraws GRAP IV restrictions in Delhi-NCR after dip in air pollution levels
NCR's air quality lifted stage IV restrictions under GRAP following an improvement in pollution levels. The capital report
GRAP-4 Curbs Revoked As Delhi-NCR’s Air Quality Improves
Delhi’s air pollution levels showed a declining trend on Tuesday and the 24-hour average Air Quality Index (AQI) stood at 369 at 4 pm.
The Financial Express1h
Delhi AQI: Air Quality drops to ‘very poor’ category in parts of Delhi as dense fog engulfs city on Christmas morning
The AQI in various parts of Delhi, including Anand Vihar and Ashok Vihar, was recorded in the ‘very poor’ range. For example, ...
Fog envelopes Delhi, air quality improves, mercury dips slightly
The visibility at Safdarjung, which is representative of Delhi’s weather, and Palam dropped to 100m at 5.30 am and continued ...
20 trains delayed, flight advisory issued as thick fog envelops Delhi: Check full list here
Among the delayed services were notable trains such as the Goa Express, Poorva Express, Kalindi Express, and the Rewa-Anand ...
Dense fog engulfs Delhi as air quality remains ‘very poor’
According to the India Meteorological Department (IMD), the minimum temperature stood at nine degrees Celsius.
Delhi weather: Cold wave continues with 'very poor' air quality, dense fog likely
The national capital on Tuesday night received light rains following which residents experienced a chilling morning with ...