Related topics: air pollution · pollution

Drying California lake to get $250M in US drought funding

The federal government said Monday it will spend $250 million over four years on environmental cleanup and restoration work around a drying Southern California lake that's fed by the depleted Colorado River.

Take climate-changing aerosols seriously, scientists say

The dangerous impacts of aerosol changes on vulnerable regions should have been a priority at COP27 after climate policymakers agreed a breakthrough deal to support these parts of the world, scientists have claimed.

EPA awards grants to monitor air quality in 37 states

The Environmental Protection Agency on Thursday awarded grants for projects to monitor air quality in 37 states, with a focus on minority communities and other areas overburdened by pollution.

Real-time air quality data can be 'life saving'

Research co-led by The University of Queensland has found sharing real-time air quality readings in developing countries can reduce air pollution and lead to lower mortality rates.

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Air Quality Index

The Air Quality Index (AQI) (also known as the Air Pollution Index (API) or Pollutant Standard Index (PSI)) is a number used by government agencies to characterize the quality of the air at a given location. As the AQI increases, an increasingly large percentage of the population is likely to experience increasingly severe adverse health effects. To compute the AQI requires an air pollutant concentration from a monitor or model. The function used to convert from air pollutant concentration to AQI varies by pollutant, and is different in different countries. Air quality index values are divided into ranges, and each range is assiged a descriptor and a color code. Standardized public health advisories are associated with each AQI range. An agency might also encourage members of the public to take public transportation or work from home when AQI levels are high.

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