Urban Air Quality

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 …

Vanishing canopies affect air quality

Poornima Nataraj, Nov 5, Bangalore: Gradual disappearance of tree canopies in Bangalore in the name of development has adversely affected the City

Pollution board team reaches Jaipur to monitor fire-affected areas

A team of scientists from the Central Pollution Control Board (CPCB) is monitoring air, water and soil in the areas affected by the fire that broke out in 11 IOC tanks in Jaipur in Rajasthan.

India, Sweden to sign MoU on environment

India and Sweden are expected to sign a Memorandum of Understanding (MoU) on environment as Swedish Prime Minister Fredrik Reinfeldt visits India on Thursday for the 10th India-EU summit. The MoU will cover climate change, clean technology, clean development mechanisms, environmental protection, environmental governance and air-water quality. The MoU will …

Political 'buck-passing' on air pollution risks lives

Attempts to halt and reverse a decade of worsening air quality in London are being held up by political indecision. After steady rises in air quality up until the turn of the century, London should be well on the way to tackling one of the most serious public health concerns …

Healthy neighborhoods: Walkability and air pollution

The built environment affects public health in many ways (Frumkin et al. 2004), depending on the interplay between factors such as community design, travel patterns, physical activity, transportation safety, and air and water pollution. This study investigated interactions between a) walkability, a measure of how conducive the built environment is …

Clean air for megacities

Residents of the world's largest cities are ideally positioned to achieve the twin goals of clean air and lower carbon emissions, according to scientists in China and the US. The sheer density of populations in the world's 19 megacities

Cracker campaign goes up in smoke

NEW DELHI: Delhi government's much celebrated anti-cracker campaign which saw chief minister Sheila Dikshit exhorting Delhiites not to pollute the environment seems to have ended in a whimper this Diwali. Delhiites didn't only have a blast, but they also had a sparkling Diwali an indication that both noise and air …

Surface ozone pollution during the festival of Diwali, New Delhi, India

Pollution from carbon monoxide, nitrogen dioxide, sulphate and suspended particulate matter due to ignition of fireworks during the festival of Diwali is well established. Although surface ozone exhibits high natural variability throughout the year, any short term enhancement in ozone levels coupled with high level of pollutants during Diwali might …

Clean air for smaller cities: Philippines country profile

Air pollution levels in the megacities of Asia show a stabilizing trend but still exceed World Health Organization guidelines. Studies also show poor air quality, not only in the megacities of Asia, but also in smaller cities with populations of 200,000 to 1.5 million. While megacities often receive support for …

What is the role of air pollution modeling in policy making?

The air pollution is a growing problem in a number of cities around the world. Over the years, starting from the days of the infamous London smog and Los Angeles smog episodes, the cities around the world have established programs to better understand the air pollution sources and facilitated ways …

What is the role of air pollution modeling in policy making?

Policymakers in rapidly growing urban areas increasingly recognize that addressing air quality issues is an urgent priority. The developing countries should aspire to imitate the air pollution modeling systems, irrespective of the modeling limitations. Studies and dialogues should include properly identifying the sources of pollution to formulate rational and effective …

City scientists pitch in to ensure green Commonwealth

Pune In a first of its kind initiative by city-based Indian Institute of Tropical Meterology (IITM), scientists of the institute will assess the quality of air in Delhi during the Commonwealth Games next year. Scientists will be able to predict pollution levels 24 hours in advance at 10 key locations. …

Impact of industrialisation on environmental pollution

In recent years, the large scale urbanization, industrialisation and associated environmental alteration and its impact on biodiversity pose a threat to human existence through basic necessities, recreation and the ecological functions. It is evident that pollution from various sources particularly from industries has negative impact on environment, irreversible in nature, …

Fine particles (PM2.5 ) in ambient air of Lucknow city due to fireworks on Diwali festival

People burn crackers world over on different occasions in different countries to express their happiness. Fireworks in large amounts aggravate the level of air pollutants and cause significant short-term air quality degradation with possible impact on human health. Fine particles (PM2.5 <2.5 μm), which may pose detrimental effects on human …

Sparkling in natural light, airport terminals go green

New Delhi: The new domestic terminal (1D) gets its sparkle not from bright electric bulbs but natural light. It

National ambient air quality status 2008

Results of ambient air quality monitoring carried out during 2008 at various monitoring stations under National Air Quality Monitoring Programme by the CPCB. Pollutants found to exceed the standards in many cities are suspended particulate matter and respirable suspended particulate matter. Results of additional pollutants such as benzene and carbon …

Tree plantation drive launched

NEW DELHI: Chief Minister Sheila Dikshit launched the annual plantation drive in the Capital from her 3 Motilal Nehru Place official residence on Tuesday in the presence of a large number of school children who also planted a variety of saplings. Speaking on the occasion, Ms. Dikshit exhorted the children …

Air quality level

CHENNAI: The level of total suspended particulate matter in the ambient air at a traffic junction in Vallalar Nagar during the 24-hour period ending 6 a.m. on Friday was 302 micrograms/cubic metre as against the permissible limit of 200 micrograms/cubic metre. The level of respirable suspended particulate matter at the …

Air quality

CHENNAI: The level of total suspended particulate matter (TSPM) in the ambient air at a traffic intersection in Vallalar Nagar during the 24-hour period ending 6 a.m. on Tuesday was 312 microgram/cubic metre. The permissible limit is 200 microgram/cubic metre. According to data provided by the Tamil Nadu Pollution Control …

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