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

One possible reason for bad air quality in the city is a fire that broke out yesterday afternoon in Lancaster, Pennsylvania, where air quality is notably unhealthy. Why would a fire more than 150 ...

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

The popular tourist destination recorded an Air Quality Index of 168 which is considered ‘unhealthy’ while the level of PM2.5 ...

Dhaka, the overcrowded capital city of Bangladesh, has topped the list of cities with the worst air quality with an AQI index of 257 at 9:31am today (25 January). The air was classified as 'very ...

Dhaka, the overcrowded capital city of Bangladesh, has again ranked the fourth on the list of cities with the worst air ...

Today’s air was classified as ‘very unhealthy', referring to a severe health threat, according to the AQI index ...

Data from IQAir, an international air quality monitoring agency, shows that Delhi, India, recorded an AQI of 218, ranking as the second most polluted city globally. Hanoi, Vietnam, followed with an ...

Officials are warning of windblown ash and other pollutants from Los Angeles-area fires and say air quality readers won't ...

The Oregon Department of Environmental Quality issued an air quality advisory for La Pine Tuesday due to stagnant air ...

Lahore has once again emerged as the most polluted city in the world, registering an average Air Quality Index (AQI) reading of 271, according to the latest global air pollution data. This figure ...

Dhaka has ranked the second on the list of cities with the worst air quality with an AQI score of 291 at 9:01am today. The air was classified as "very unhealthy", according to the AQI index today.