Central Ohio counties face an Air Quality Alert as ozone levels rise due to high pressure and sunny conditions.

The EPA's Air Quality Index can tell you whether breathing outside air can be harmful. Here's how to read the scale to plan ...

As of Tuesday morning, the Air Quality Index in Milwaukee was between 115 to 120, which falls in the "unhealthy for sensitive ...

The air quality index, or AQI, measures the air quality and level of health concern it presents as measured by the Environmental Protection Agency. How does AQI work?

As fires burn through the Northwest, doctors are warning that flames aren’t the only dangers – smoke can also cause ...

Ideally, you want the AQI to be no higher than 50, assuming that you aren’t Hedorah, that Smog Monster from that 1971 Godzilla movie. An AQI of 100 corresponds to the level set as the short-term ...

Delhiites can expect more showers, as forecasted by the weather department on Tuesday. Several areas in south and southwest Delhi are already grappling with waterlogging. The minimum temperature is a ...

The Air Quality Index (AQI) is a national system developed by the U.S. Environmental Protection Agency (EPA) to translate ...

The Air Quality Index is a scale used for daily reporting of how clean or polluted the air is, and what health effects might be of concern.