Page 3 - Air Pollution Study

Delhi's air quality remains 'moderate' as winter returns with strong winds

The improved air quality is mainly due to better weather conditions, with strong winds and light rainfall, earlier this week, that helped to clear pollutants

Air pollution may be higher inside your home than outdoors: Study

The team note that factors such as household location, ventilation, and occupancy patterns influenced particle levels - demonstrating the complexity of indoor air quality

'Indians justifiably outraged': Bryan Johnson shares study on air quality

A study shared by US entrepreneur Bryan Johnson showed that prolonged exposure to PM 2.5 pollutants lead to liver inflammation, blood fat imbalance, and presence of liver protein markers

Indians justifiably outraged by poor air quality, says Bryan Johnson

Citing a study, Johnson highlighted that prolonged exposure to PM2.5 pollutants can cause liver inflammation, fibrosis, blood fat imbalances, and genetic disruptions linked to cancer

Bombay HC calls for CNG & electric vehicles to tackle Mumbai air pollution

Encouraging the adoption of cleaner transport, the court suggested gradually phasing out diesel-driven vehicles while promoting CNG and electric cars

Indian cities reduced PM2.5 pollution levels by 27% from 2019-24: Report

Indian cities achieved an average 27 per cent reduction in PM2.5 pollution levels from 2019 to 2024, with those under NCAP alone recording a 24 per cent decline, a new report has found. According to the report by climate tech firm Respirer Living Sciences, Varanasi and Moradabad reduced PM2.5 levels by 76 per cent and 58 per cent, respectively. Other top performers include Kalaburagi (57.2 per cent), Meerut (57.1 per cent), Katni (56.3 per cent), Agra (54.1 per cent), Baghpat (53.3 per cent), Kanpur (51.2 per cent) and Jodhpur (50.5 per cent). "Air quality has improved considerably, with a 27 per cent decline in PM2.5 levels across all monitored cities since 2019. NCAP (National Clean Air Programme) cities alone achieved a 24 per cent reduction, showing progress in combating air pollution," according to the report. Despite the improvements, several cities remain highly polluted. In 2024, Delhi recorded PM2.5 levels of 107 microgrammes per cubic metre while Byrnihat in Assam report

Delhi's PM 2.5 levels up in 2024 even after low stubble burning: CSE report

Delhi's annual PM2.5 levels rose in 2024 for the second consecutive year, despite a 37 per cent drop in stubble burning in Punjab, Haryana and the national capital, according to a new report. The report by think tank Centre for Science and Environment (CSE) said Delhi's annual PM2.5 concentration increased to 104.7 microgrammes per cubic metre in 2024 -- a 3.4 per cent rise from the 2023 levels. This is also more than twice the national ambient air quality standard of 40 microgrammes per cubic metre. While the 2024 average is still 9.6 per cent lower than the 2018 peak of 115.8 microgrammes per cubic metre, it is 3 per cent higher than the three-year average of 2021-2023, indicating a gradual reversal of earlier gains made between 2018 and 2022, it said. The report highlighted that the total annual fire counts (on account of stubble burning) dropped by 37.5 per cent in 2024 in Delhi, Punjab, and Haryana. Punjab recorded a 75 per cent decline, and Haryana, a 37 per cent ...

CAQM reinstates GRAP 3 curb in Delhi-NCR as air pollution levels rise

The Centre's panel on Delhi-NCR's air quality on Friday brought back stage 3 curbs under the Graded Response Action Plan amid a rise in air pollution levels owing to unfavourable meteorological conditions, according to an official order. Delhi's air pollution levels showed an increasing trend and the 24-hour average air quality index (AQI) stood at 371 at 4 pm. ?According to forecasts from the India Meteorological Department and the Indian Institute of Tropical Meteorology, the air quality situation is predicted to deteriorate further owing to unfavourable meteorological conditions. The Commission for Air Quality Management, responsible for strategizing air pollution mitigation in Delhi-NCR, directed authorities in the region to immediately implement curbs prescribed under stage 3 to prevent further worsening of the situation. GRAP Stage 3, which was lifted last Friday, entails a ban on non-essential construction work. Classes up to grade V are required to shift to hybrid mode und

Amid dip in Delhi-NCR pollution levels, CAQM revokes Grap-3 restrictions

The Centre's panel on Delhi-NCR's air quality on Friday rolled back stage 3 curbs under the Graded Response Action Plan (GRAP) amid a dip in air pollution levels owing to continuous rains, according to an official order. Delhi's air pollution levels showed a declining trend and the 24-hour average air quality index (AQI) stood at 324 at 7 pm. ?According to forecasts from the India Meteorological Department and the Indian Institute of Tropical Meteorology, the air quality situation is predicted to improve further owing to favourable meteorological conditions. The Commission for Air Quality Management, responsible for strategizing air pollution mitigation in Delhi-NCR, said curbs prescribed under stage 1 and 2 will remain in force in the region. GRAP Stage 3 entails a ban on non-essential construction work in the private sector. Classes up to grade 5 are required to shift to hybrid mode under Stage 3. Parents and students have the option to choose online education wherever ...

Delhi air quality improves 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

Govt reviews $30 billion sulphur-cutting programme for coal plants

Instead of FGDs, government officials have proposed deploying locally made electrostatic precipitators that remove fine particles such as dust and smoke from emissions

Delhi continues to battle with 'severe' air quality amid drizzle and fog

AQI hits 401 despite light rainfall; cold wave grips north India with plummeting temperatures and snowfall disruptions

Residential sector key source of PM2.5 pollution in north India: Study

Pollution in east, north and central Indian cities primarily comes from residential and transportation sectors, while in western India, industry and energy are the main contributors to local PM2.5 pollution, a study has found. Published in the journal Modeling Earth Systems and Environment, the study also found that PM2.5 pollution in cities in south India majorly comes from the industry and residential sectors. Researchers from the Indian Institute of Tropical Meteorology, Maharashtra, and the Indian Institute of Technology Roorkee, analysed pollution levels in 53 cities, having more than a million population during the winter of 2015-2016. Residential emissions -- from burning biomass for cooking and heating -- were found to be the leading contributor to local PM2.5 pollution in Srinagar (68 per cent), Varanasi (37 per cent), Allahabad (34 per cent) and Kanpur (33 per cent). The transportation sector's contribution to local PM2.5 pollution was found to be higher in north Indian .

Delhi's air still in 'severe' category despite light rainfall, AQI at 402

While the first half of December saw six 'moderate' air quality days, November remained highly polluted

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

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

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

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

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

AQI at 275: Delhi's air quality deteriorates, commission faces criticism

The Air Quality Early Warning System predicts Delhi's air quality will remain in the 'poor' category for the next two to three days