TOPICS / Air quality

A measure of the condition of ambient air with respect to its effects on public health and the environment. Generally defined in terms of concentrations of six principal pollutants: carbon monoxide, nitrogen dioxide, sulfur dioxide, lead, ozone, and particulate matter.

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Tier 3 motor vehicle emission and fuel standards (NPRM)
Overview of the US EPA Notice of Proposed Rulemaking. The proposed new standards would be phased in from 2017 and fully implemented by 2025.
Policy update
Costs and benefits of cleaner fuels and vehicles in India
Investing in ultra-low-sulfur fuel and clean vehicle technologies in India will not come without costs. But the benefits, in terms of reduced healthcare costs and higher productivity, far outweigh them.
Briefing
Reducing Air Emissions from Shipping in China
A workshop designed for regulators, port authorities, academic and research institutes, NGOs from China and abroad to share international best practices for mitigating air pollution from port activities and vessels, and inform...
 

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