Learn what the air quality index (AQI) means, how it impacts your health, and how to stay safe when pollution is high.

Toxic smoke and dangerous particulate pollution are spreading far beyond the flames, leaving air quality at unhealthy levels ...

Erin Davis/Axios Visuals Air quality is worsening in the Upper Midwest and Northern California, according to year-over-year data. Why it matters: Poor air quality can lead to long-term health problems ...

Southeast Asian cities were among five most polluted in the world on Friday according to air-monitoring organisation IQAir, ...

India’s capital of over 33 million people has long suffered from toxic air but it has never really registered as a key ...

Shemsi Gara operated a giant digger in a Kosovo coal mine, churning up toxic dust that covered his face and got into his ...

The US has topped a list of 175 countries of where citizens are most at risk from the adverse health effects of air pollution ...

Shell got one. So did the pipeline company Enbridge. And last summer, energy giant Drax got its biggest one to date, worth more than half a billion dollars.

The air has improved in the LA region as firefighters get blazes under control, but there are questions about how safe the ...