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A new report shows that some of the nation's most polluted cities are in Southern California, four of which call the Inland ...
A report from the air quality monitoring database, IQAir, found that just 17 per cent of cities meet the World Health Organisation's (WHO's) air pollution guidelines. As this map reveals ...
The World Health Organization's air quality guidelines recommend that annual average ... pollution in North America: While eight of the most polluted U.S. cities in North America were in ...
Air-quality officials are advising people in several Southern California cities to keep their doors and windows closed amid ...
In the study, conducted by IQAir, Ontario was ranked as the worst, followed closely by Bloomington, Huntington Park, San ...
Meanwhile the cities with the worst pollution in North America were all in California ... s worst air – noted a small improvement, the report said. Its national annual average PM2.5 ...
HONG KONG — Six of the world’s 10 most polluted cities are in India, while California has the worst air pollution in North ... Organization recommends that average annual concentrations ...
Meanwhile the cities with the worst pollution in North America were all in California ... annual average PM2.5 concentration decreased from 32.5 micrograms per cubic meter to 31, with air quality ...
Switching to stricter California-style limits ... The researchers used an EPA air quality model that had been developed to look at pollution across the entire country, but ran the model at a ...
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