Page 30 - Delhi Air Quality

Delhi's AQI improves marginally but air remains 'hazardous' at 388

While the air remains hazardous in the national capital, it shows slight improvement compared to Saturday, when many areas of the city reported an alarming AQI of 434

Delhi's AQI improves to 'very poor', maximum temp at 23.4 degree Celsius

Delhi's air quality improved to the 'very poor' category on Saturday, with the 24-hour average Air Quality Index (AQI) recorded at 370, officials said. The national capital's AQI stood at 429 in the 'severe' category on Friday, they said. An AQI between zero and 50 is considered 'good', 51 and 100 'satisfactory', 101 and 200 'moderate', 201 and 300 'poor', 301 and 400 'very poor', and 401 and 500 'severe'. The maximum temperature in Delhi was recorded at 23.4 degree Celsius, a notch above the season's average, while the minimum temperature settled at 7.6 degrees Celsius, one notch below the season's average, the India Meteorological Department (IMD) said. The city experienced fog in the morning hours, with humidity levels oscillating between100 per cent and 64 per cent, the department said. The weather office has predicted moderate fog on Sunday with the maximum and minimum temperatures expected to hover around 24 and eight degrees Celsius, respectively.

Delhi gasps for air: Toxic smog turns city into a hazard zone at 434 AQI

Delhi chokes under a blanket of toxic smog as the AQI soars to a hazardous 434, prompting health warnings for vulnerable groups and urging residents to remain indoors

Delhi's air quality remains in 'severe' category, average AQI at 429

Delhiites continued to breathe toxic air as the air quality on Friday remained in the severe category, with the 24-hour average Air Quality Index (AQI) of 429. The predominant pollutant was PM2.5, the fine particulate matter that poses serious health risks, as they can penetrate deep into the lungs and enter the bloodstream. Of the 36 monitoring stations across the city, 14 reported air quality in the 'Severe Plus' category, with AQI readings above 450. The remaining stations recorded AQI levels in the 'Severe' range, between 401 and 450. These levels signify a significant deterioration in air quality, which is considered life-threatening for vulnerable populations such as children, the elderly, and those with respiratory or heart conditions. The maximum temperature on Friday was 23 degrees Celsius, slightly warmer than the usual for this time of year. The day started with a cool, misty morning and high humidity, which fluctuated between 95 per cent and 71 per cent throughout the

Delhi's air quality remains at 'severe' stage, govt blames stubble burning

Despite the enforcement of Stage-IV measures under the Graded Response Action Plan (Grap), pollution levels show little respite

Delhi govt imposes perpetual ban on manufacture, use, sale of firecrackers

The Delhi government on Thursday imposed a "perpetual ban" on the manufacture, use and sale of firecrackers, including through online platforms, in the national capital, according to an official order. Principal Secretary (environment) of the Delhi government A K Singh invoked the "perpetual ban" on firecrackers under the Environment (Protection) Act, 1986. The ban covers the manufacturing, storage, and selling, including delivery through online marketing platforms, of all kinds of firecrackers and their bursting in Delhi, said the order. The move comes amid Delhi facing hazardous air pollution levels leading to a range of restrictions including a ban on construction activities and entry of trucks in the city.

Air pollution linked to more hospitalisations for all causes, finds study

A research has found an increased hospital admissions for all causes, including mental illnesses, in relation to a long-term exposure to air pollution. The Scottish study, published in the British Medical Journal (BMJ) Open, found that a higher exposure to nitrogen dioxide (NO2) and particulate matter (PM10 and PM2.5) combined was linked to a higher hospitalisations for cardiovascular, respiratory and infectious diseases. Researchers from the University of St Andrews, UK, found that for every one micron per cubic metre increase in PM2.5 and NO2 pollutants, the incidence for hospitalisations for respiratory conditions rose by over four per cent and one per cent, respectively. Further, higher hospital admissions for mental or behavioural disorders were associated with an increased exposure to nitrogen dioxide. While the average yearly levels of NO2, PM10 and PM2.5 were lower than the 2005 World Health Organization guidelines, the levels of NO2 and PM2.5 were higher than those in the

IMD issues orange alert for fog in Delhi, mercury dips to 7 degrees Celsius

Delhi cold wave: Delhi recorded a minimum temperature of 7 degrees Celsius on Thursday morning; AQI was recorded at 448 on Thursday

Delhi continues to breathe 'severe plus' air; no sign of improvement

The city is currently under Grap Stage-IV, which bans all construction work within city limits and prohibits the entry of unnecessary polluting trucks inside the capital

Severe pollution grips Delhi; AQI more than doubles in four days to 445

The sudden deterioration coincides with a rise in minimum temperatures, which have increased by 2°C in the past 24 hours

Fog covers Delhi-NCR amid cold wave, temperature drops to 5 degrees Celsius

India cold wave: The air quality in Delhi remained in the 'severe' category, as the overall AQI was 442 at 8 am, according to data from the Central Pollution Control Board (CPCB)

Severe air pollution in Delhi as AQI hits 442; toxic haze blankets city

The air quality is expected to remain in the severe range on Thursday

Delhi is breathing 'severe plus' air quality again, Grap-IV reimposed

The air quality in Delhi deteriorates to 'severe plus'; strict measures under Grap Stage IV enforced to curb pollution

Air quality panel invokes Grap 4 in Delhi as air quality turns 'severe'

The Centre's air quality panel for Delhi-NCR on Monday invoked stringent measures under Stage 4 of the air pollution control plan as the region's air quality turned "severe" due to unfavourable meteorological conditions, according to an official order. The curbs under Stage 4 of the Graded Response Action Plan (GRAP) for winters include a ban on all construction and demolition activities, including public projects such as highways and flyovers, and on the entry of trucks carrying non-essential goods into Delhi. Delhi's 24-hour average air quality index, which was 379 at 4 pm, breached the 400 mark around 10 pm amid extremely calm winds and "buildup of an inversion layer adversely affecting the vertical mixing height". Vertical mixing height is the height above the surface throughout which a pollutant can be dispersed.

Education dept orders Delhi schools to hold classes upto V in hybrid mode

In view of the implementation of restrictive measures under GRAP III, the Delhi Directorate of Education (DoE) on Monday directed all school administrations to conduct classes for students up to Class V in hybrid mode. In a circular, the DoE stated, "All heads of government, government-aided, unaided recognised private schools of DoE, NDMC, MCD and Delhi Cantonment Board are directed to conduct classes for students up to Class V in a 'hybrid mode,' wherever online learning is feasible, with immediate effect until further orders." The Delhi's air quality deteriorated, with the Air Quality Index (AQI) recorded at 379 on Monday, placing it in the "very poor" category. This marks a sharp rise from Sunday's reading of 294 in the "poor" category. Under Stage three of the Graded Response Action Plan measures, restrictions now include a ban on petrol vehicles that do not meet BS-III emission standards and diesel vehicles that fail to comply with BS-IV norms from entering the city. Previous

Grap-III measures reimposed in Delhi-NCR as air quality hits 'very poor'

The CAQM reimposes Grap-III in Delhi-NCR as AQI hits 355. Construction halted and diesel trucks banned; SC calls for pan-India air pollution action plan

Delhi-NCR shivers at 4.5 degrees Celsius; AQI slips to 'very poor' levels

Delhi cold wave: The IMD predicts that the cold wave may strengthen in the coming days, with shallow fog expected across various parts of Delhi-NCR

Delhi's air quality is 'very poor' again, no immediate improvement expected

This sharp decline in air quality is attributed to low wind speeds, vehicle emissions, falling temperatures, and stubble burning

Delhi's minimum temperature drops to 4.9 degrees C, air quality 'poor'

The minimum temperature dropped to 4.9 degrees Celsius in Delhi on Sunday, though cold wave conditions did not prevail, according to the weather department. No cold wave conditions prevailed, as per the data, the India Meteorological Department (IMD) said. The minimum temperature in Delhi dropped to 4.9 degrees Celsius on Sunday, 3.1 notches below the normal nighttime temperature. Earlier on Saturday, the minimum temperature was recorded at 8 degrees Celsius. Delhi recorded a maximum temperature of 23.2 degrees Celsius on Sunday, 0.2 notches below normal, the IMD said, adding that humidity levels ranged between 91 per cent and 45 per cent. The IMD has forecast moderate fog for Monday, with the maximum and minimum temperatures expected to remain at 23 degrees Celsius and 5 degrees Celsius, respectively. Meanwhile, Delhi's Air Quality Index (AQI) was in the 'poor' category, with a reading of 294 at 4 pm. An AQI between zero and 50 is considered 'good', 51 and 100 'satisfactory', 1

Double trouble for Delhi: Temperature drops, AQI stays in 'poor' range

Cold wave provides no relief as homeless in Delhi seek shelter and warmth; AQI remains in the 'poor' category