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 …

Status of urban and rural air quality exposure at nation scale: a comparative analysis

As air pollution mitigation strengthens in the cities under the National Clean Air Programme, a recent analysis by Climate Trends brought attention to the rural regions in the country. The analysis used the SAANS satellite data and found that dangerous levels of particulate matter affect the rural regions too. Data …

Mapping air pollution in Bengaluru using low-cost sensors and mobile monitoring data

To effectively manage air pollution, need to measure it accurately and at high spatial resolution. However, maintaining a dense network of regulatory instruments is financially and technically burdensome for low- and middle-income countries. A hybrid approach that combines non-conventional, less expensive, short-term stationary, and mobile deployments may be a cost-effective …

2022 world air quality report

India has dropped from fifth to eighth place in terms of the world’s most polluted countries in 2022. According to this World Air Quality Report 2022 by the IQAir, out of the 50 most polluted cities in the world, 39 are in India. The 2022 World Air Quality Report reviews …

Air quality and Swedish air quality monitoring 2023

This report is part of the Swedish Environmental Protection Agency’s series Air & Environment within the national environmental monitoring programme. The report’s authors include stakeholders active within the national air quality monitoring and researchers and experts at universities, research institutes and public agencies. A great deal of knowledge exists about …

Air quality in African cities

This report contains a comparative analysis of five African cities in terms of their air pollution problem, as well as their attempts to manage and improve air quality. Also included is an analysis of the impact of counter measures to the COVID-19 pandemic in 2020 and 2021 in those cities, …

Implementation of actions under Stage-III (`Severe' air quality) of revised Graded Response Action Plan in Delhi-NCR

Based on earlier decisions of the Sub-Committee on GRAP, actions upto Stage-I and Stage-II of the GRAP are already in force vide orders dated October 5, 2022 and October 19, 2022 respectively. Stage III & Stage IV of the GRAP have also been imposed and thereafter revoked from time to …

Better forests, better cities

Better Forests, Better Cities evaluates how forests both inside and outside city boundaries benefit cities and their residents, and what actions cities can take to conserve, restore and sustainably manage those forests. This report is the first of its kind comprehensive resource on the connection between cities and forests, synthesizing …

Bending Delhi’s air pollution curve: learnings from 2020 to improve 2021

The study intends to support the Delhi government, the Central Pollution Control Board (CPCB), and the Delhi Pollution Control Committee (DPCC) in identifying priority areas of interventions needed in controlling air pollution in Delhi during the winter season of 2021. It establishes the primary drivers of Delhi's winter air pollution …

Air quality deteriorating in Guwahati: NGT issues notice

Order of the National Green Tribunal (Eastern Zone Bench, Kolkata) in matter of Himangshu Nath Vs Central Pollution Control Board & Others dated 12/09/2022. An application on the worsening air quality affecting the city of Guwahati and the resultant health effects was filed before the NGT. The NGT said that …

The state of global air quality funding 2022

Published each year by the Clean Air Fund, this report provides the only global snapshot of projects funded by donor governments and philanthropic organizations to tackle air pollution. Its purpose is to identify gaps in funding and opportunities for strategic investment and collaboration which will deliver clean air for all. …

Air quality and health in cities: a state of global air report 2022

India is home to 18 of the 20 cities with the most severe increase in fine particle pollutants or PM2.5 from 2010 to 2019, according to this comprehensive and detailed analysis of air pollution and global health effects for over 7,000 cities, published by the Health Effects Institute (HEI). This …

Flexicity: a comparative study of air quality and mobility before, during and after the COVID-19 lockdowns in Bengaluru and their correlation with hybrid work systems …

The pandemic-induced lockdown provided a temporary respite to the citizens by reducing vehicular traffic, thereby significantly improving air quality, even dropping Air Quality Index (AQI) to well within National Ambient Air Quality limits. In this report, Greenpeace India attempts to analyse the contribution of vehicular emissions to air pollution in …

Clean air action: applications of citizen science to identify and address air pollution emission sources

This paper aims to improve understanding of how citizen science initiatives improve understanding on the methodologies and outcomes of citizen science initiatives that are focused on sources of air pollution. Growing awareness of the health and environmental burden of air pollution combined with access to new low cost air pollution …

Clean air action: applications of citizen science to identify and address air pollution emission sources

This paper aims to improve understanding of how citizen science initiatives improve understanding on the methodologies and outcomes of citizen science initiatives that are focused on sources of air pollution. Growing awareness of the health and environmental burden of air pollution combined with access to new low cost air pollution …

Sensing change: how cities are using new sensing technologies to achieve air quality goals

Nine out of ten people breathe dirty air. Air pollution leads to early death and increased disease, while impacting our economies and reducing opportunities for our residents to thrive. The most vulnerable and marginalised communities in our cities are most at risk. Air quality monitoring is a vital part of …

2021 world air quality report

This 2021 World Air Quality Report presents an overview of the state of global air quality in 2021. The report is based on PM2.5 air quality data from 6,475 cities in 117 countries, regions and territories around the world. The PM2.5 data presented here is reported in units of micrograms …

Identification of polluting sources for Bengaluru: source apportionment study

he Ministry of Environment, Forest and Climate Change (MoEFCC), Government of India, launched the National Clean Air Programme (NCAP) in 2019, with the aim to improve air-quality levels in non-attainment cities. NCAP has identified 122 non-attainment cities (cities that violate the national ambient air quality standards). Bengaluru, the capital of …

Are cities in Southern India breathing safe air?: an air quality analysis of 10 cities from South India

This report brings together the key insights from an air quality of analysis of 10 cities in South India: Bengaluru, Chennai, Hyderabad, Mysuru, Kochi, Mangalore, Visakhapatnam, Amaravati, Coimbatore and Puducherry. Observations show that PM2.5 and PM10 levels in all cities are well above the recommended World Health Organization limits. In …

Getting down to earth: are satellites reliable for measuring air pollutants that cause mortality in Low- and Middle-Income Countries?

Outdoor air pollution accounts for an estimated 4.2 million deaths worldwide, the majority of which are caused by exposure to fine particulate matter (or PM2.5) air pollution. Most of these deaths occur in low- and middle-income countries (LMICs). Reducing PM2.5 air pollution is thus crucial for improving public-health outcomes in …

Three Hundred Forty Eighth Report on the recommendations/observations contained in the Three Hundred Sixteenth Report on Air Pollution in Delhi and National Capital Region

The Action Taken Report (ATR) of the Committee deals with the action taken by the Government on the recommendations/observations contained in Three Hundred Sixteenth Report on 'Air Pollution in Delhi and National Capital Region'. The Report was presented to Rajya Sabha and laid on the Table of Lok Sabha on …

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