Erin Davis/Axios Visuals Breathe easy, Philly, because our air quality is on the up and up. Why it matters: Long-term exposure to poor air quality is harmful to your health. State of play: The average ...

Donald Trump has made drastic changes to the Environmental Protection Agency. Here’s how they could impact efforts to reform ...

The air we breathe every day is a bit cleaner than it was a few years ago, according to an Axios analysis of EPA data. Why it matters: Long-term exposure to poor air quality is harmful to your health.

The San Diego Police Department, who issued evacuation orders at 2:47 p.m., lifted them an hour later at 3:48 p.m., according to the San Diego County emergency map. Nearby road closures ... Institute ...

The states with the lowest rates of COVID-19 tests ... which also often have poor ventilation compared to open-air environments, increasing the concentration of airborne viruses.

Naturally, people in the Los Angeles area are reaching for their phones to see what the Air Quality Index (AQI ... particularly in western states like California. But human-caused climate change ...

Unlike typical wildfires, smoke from the L.A. fires — consisting of toxic materials from burned down homes, cars, and more — poses additional risks to public health.

A live map from AirNow showed that, as of 10:42 a.m. ET, air quality considered unhealthy for sensitive groups was detected in parts of California, Oregon, and Idaho, while "unhealthy" air was ...

The AQI is measured on a scale from 0 to 500, with the lower the number, the healthier the air. (Getty Creative) ...

during which air-quality advocates and public health experts warned attendees to consider the short- and long-term health effects of this disaster. “We now have the largest urban fire in the ...

Calculating air pollution from wildfires and other events has become more complicated. That doesn’t mean it’s necessarily more accurate.