Air Quality Index (AQI)

Judgment of the National Green Tribunal regarding plywood factories operating in Yamuna Nagar, Haryana, 27/05/2025

Judgment of the National Green Tribunal, May 27, 2025 in the matter of Sumit Saini Vs Shree Ram Steel Industries & Others. Sumit Saini, resident of village Damla, District Yamuna Nagar, Haryana had sent a letter petition dated May 14, 2022 to the NGT. The application said that around 25 …

A status assessment of National Air Quality Index (NAQI) and pollution level assessment for Indian cities

A ranking of the 17 cities covered by the National Air Quality Index (NAQI) was released by Greenpeace India, and reveals data to challenge the complacence of the Central and State Governments regarding cities other than Delhi: as many as fifteen of the 17 Indian cities with NAQI stations showed …

Shinzo Abe to visit Varanasi: Will the air quality make him wear a mask?

Varanasi: The Japanese Prime Minister Shinzo Abe will have to spend time in severely polluted atmosphere full of particulate matters in the air during his visit to Varanasi. Abe along with his Indian counterpart Narendra Modi is arriving here on December 12. The city's air quality index (AQI) was 404, …

Beijing issues first-ever 'red alert' for smog

Beijing: Authorities in Beijing have issued an air-pollution "red alert", the first time warning levels have been raised to the highest level since an emergency response system was introduced in late 2013. The alert will see temporary restrictions put in place from 7am on Tuesday to noon on Thursday: half …

As Delhi debates, Beijing acts to check air pollution

NEW DELHI/BEIJING: While Delhi continues to debate the 'tough' anti-pollution measures announced by the city government, China's capital Beijing on Monday issued its first "red alert" on air pollution since 2013, taking tougher and immediate measures to deal with a problem which appears to be comparable to what Delhiites face …

High time govt warned public about perils of pollution: Experts

During the drafting process, experts had discussed the need for issuing advisories or an alert system, but these ideas never took any concrete shape, said sources. In a recent directive, the National Green Tribunal (NGT) sought a public health advisory on pollution from the Delhi government, to warn people about …

Delhi's Air Quality Index dips to 408 mark

Air pollution in Delhi continued to choke its residents on Monday with the air quality index (AQI) touching the dangerous 408 mark. The drop prompted environment experts to urge the government to issue health advisories. The AQI of Delhi was second only to Lucknow, whose figure stood at 421, making …

TNPCB to add 25 air quality monitoring stations

The Tamil Nadu Pollution Control Board (TNPCB) will add 25 ambient air quality monitoring stations to its network in the State and the data updates will be available online. Data available on website “Already the public can see Chennai data on the Air Quality Index of the Ministry of Environment …

Smog hovers over capital, air quality plummets

On Sunday, thousands of people who participated in the half marathon had to run the 21-km stretch through a thick cover of smog. According to the Central Pollution Control Board’s (CPCB) Air Quality Index (AQI), most monitoring stations showed particulate matter (PM) levels hovering between poor and very poor levels …

High humidity worsening air pollution, say experts

MUMBAI: On Thursday morning, humidity levels in the city peaked, hitting 98% in south Mumbai and 80% in the suburbs. Peaked moisture levels have high potential to hold pollutants, say experts. According to the India Meteorological Department, the humidity in south Mumbai was almost 22% above normal. This dropped to …

Toxic particles, SO2 peak to dangerous levels on Diwali night in Delhi

Firecracker traders may have complained of a slowdown in cracker sales but air pollution levels on Wednesday didn't reflect their concerns by any measure. Air quality deteriorated drastically 9pm onwards on Wednesday breaching all safety standards by several times indicating that Delhi government and Centre's anti-cracker messaging didn't translate to …

Air pollution severe, bleak winter likely

The city's air quality deteriorated sharply on Tuesday morning with many residents complaining of a "choking feeling". In congested areas like Mandir Marg and Anand Vihar, the levels of fine, respirable particles (PM 2.5) hovered between 200 and 500 micrograms per cubic metre from 9am to 12pm, which is 3 …

Temperature takes a dip in Capital, so does air quality

As the authorities struggle to implement the green tax on commercial vehicles, air quality in the Capital continues to get worse as the temperature sees a dip. Air pollution on Monday was at alarming levels in parts of the city. As per the National Air Quality Index, which is measured …

Smog envelopes NCR, air quality falls as Punjab farmers burn paddy

Uncontrolled burning of paddy stubbles by Punjab farmers appears to be again putting the health of residents in the National Capital Region at risk, with Delhi's air quality falling sharply in the past two days even as farm fires peak in Punjab. Since Saturday, Delhi's air quality index has dramatically …

Lanka among cleanest in Asia Pollution Index 2015

Sri Lanka has emerged as one of the cleanest countries in the region in a global Mid-Year Pollution Index for 2015. Ranking among the 12 cleanest countries in Asia, Sri Lanka comes far ahead of regional counterparts such as China, India, Bangladesh, Vietnam, Malaysia, Pakistan and several other countries to …

Delhi had clean spring air - but it won't last

Stagnant air explains why pollutants accumulate throughout the workweek in winter, and why spring sees more variation within days As winter soon descends on Delhi, the city can expect air that is more than twice as polluted than during the spring and summer. Every Delhiite knows that air pollution varies …

Ozone pollution in Delhi crosses permissible limit again

Surface ozone pollution in Delhi has crossed the permissible limit, for the second time in a year, with experts blaming weak monsoon for the phenomenon. Though the ozone layer limit in Mumbai and Pune has been in the permissible limits for the past two weeks, it is increasing in these …

Delhi’s air quality very poor

The air quality of Delhi over the past one week has worsened from moderate and poor to very poor. Particulate Matter (PM) 2.5 and 10 remain the major pollutants. The National Air Quality Index shows the figure reaching an alarming 391 (showing the high level of PM 10) at stations …

Ahmedabad air judged among most dusty in the country

AHMEDABAD: Of the 13 cities in the country whose air quality index (AQI) is measured daily by the Central Pollution Control Board (CPCB), five— including Ahmedabad — face a severe problem of suspended particulate pollution. The problem is the increasing prevalence of particulate matter of 2.5 microns or less in …

Air Pollution and Smog Return to Beijing's Perfect 'Parade Blue' Skies

China is known for its smoggy, black skies that can cause health hazards to the public. But for a few days before Beijing's military parade, the city experienced perfect, azure skies. In the two-week run-up to the celebration to mark the 70th anniversary of Japan's defeat in World War II, …

Are some people more at risk from air pollution?

A study by researchers from EPA and Duke University reflects how traffic-related air pollution can impact the health of people living in nearby communities. I'm driving in rush hour traffic, waiting for the slow crawl of cars to reach the speed I would be moving had I biked home. My …

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