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The January 2024 version of the WHO database contains results of ambient (outdoor) air pollution monitoring from almost 5,390 towns and cities in 63 countries. Air quality in the database is represented by the annual mean concentration of particulate matter (PM10 and PM2.5, i.e. particles smaller than 10 or 2.5 micrometers, respectively). [1 ...
For the first time in more than 15 years, the World Health Organization updated its guidance for acceptable levels of air pollution.
For instance, some places like Africa and South America lack air pollution reporting tools, so their pollution levels are probably not reflected in this list. Moreover, many cities from a certain country are featured in the list may only mean that they have large and wide air pollution monitoring networks, which may or may not be an indicator ...
Growing evidence that air pollution—even when experienced at very low levels—hurts human health, led the WHO to revise its guideline (from 10 μg/m 3 to 5 μg/m 3) for what it considers a safe level of exposure of particulate pollution, bringing most of the world—97.3 percent of the global population—into the unsafe zone.
The current air quality forecast indicates that levels of fine particulates in the Unhealthy for Sensitive Groups (USG) range are possible starting around 8 p.m. Monday and lasting until 8 a.m ...
Air quality in Los Angeles was at "moderate" levels on Thursday morning, as judged by the EPA's Air Quality Index rating system. Moderate air quality is between 51 and 100, or in the yellow band ...
This index pays particular attention to people who are sensitive to air pollution. It provides them with advice on how to protect their health during air quality levels associated with low, moderate, high and very high health risks. The AQHI provides a number from 1 to 10+ to indicate the level of health risk associated with local air quality ...
Nearly 40% of people in the U.S. are living in areas with unhealthy levels of air pollution and the country is backsliding on clean air progress as the effects of climate change intensify ...