The AQI is measured on a scale from 0 to 500, with the lower the number, the healthier the air. (Getty Creative) But many Angelenos aren’t sure if the AQI tells the full story, especially given how ...

SAN FRANCISCO (CBS SF) -- There is plenty of confusion when it comes to Air Quality Index readings during this time of smoke-filled skies from the historic outbreak of wildfires. There are numbers ...

When news breaks, you need to understand what actually matters. At Vox, our mission is to help you make sense of the world — and that work has never been more vital. But we can’t do it on our own. We ...

Here’s how to understand the Environmental Protection Agency’s Air quality index (AQI), which measures, on a 300-point scale (along with six categories and advisories), the quality of air in any given ...

PHILADELPHIA (WPVI) -- With smoke blowing into the Philadelphia region from the wildfires in Canada, you may have heard a lot about the Air Quality Index or AQI. But what it is, exactly? The Air ...