The map pulls data from air monitors, hundreds of pollution sensors, and forecast models to provide real-time air quality index (AQI ... By checking the AQI in your area, you can stay ahead ...

This measure, based on data from the Environmental Protection Agency, evaluates states on the number of days the Air Quality Index in counties was not rated “good.” U.S. News calculated a ...

The Air Quality Index in Delhi dropped to 999 over the weekend, making it the most polluted capital city in the world. While the safe limit set by the World Health Organisation is 25, anything ...