According to the ranking in IQAir's 2024 World Air Quality Report, these are the 10 U.S. cities with the worst pollution in North America: While eight of the most polluted U.S. cities in North America ...

In the following California air quality map, you can see how the air quality is where you live or throughout California. This information is provided via the United States Environmental Protection ...

The map pulls data from air monitors, hundreds of pollution sensors, and forecast models to provide real-time air quality index (AQI) readings for more than 1,000 locations. Los Angeles’ air ...

The ports of LA and Long Beach are the biggest sources of air pollution in the LA basin. Air quality officials have drafted ...

It might come as a surprise that California’s crown jewel national parks — Sequoia, Kings Canyon, Joshua Tree and Yosemite — struggle with some of the dirtiest air of any parks in the nation.

But with rapid advancements in air quality sensors over the past several ... But the sensors that detect particulate matter — particle pollution — “are actually quite decent,” he said.

Cities in California made up six of the 10 cities with the worst air quality, including the three worst. People of color were disproportionately exposed to air pollution: The report found 63% of ...

air pollution guidelines. As this map reveals, 91 per cent of all countries had unsafe levels of air pollution in 2024. Chad, Congo, Bangladesh, Pakistan and India had the dirtiest air.