The red-level air quality index (AQI) category—covering values from 151 to 200—means the air is unhealthy for everyone, not ...

Ozone is a gas comprised of three oxygen (O3) atoms. It is unstable and reacts easily to other gases. In its natural state, it is a component in several levels of the atmosphere. At high altitudes ...

Mount Rushmore tourists hit with air quality warning - Air quality index values were estimated to have peaked at 161 at a key ...

Dhaka, the overcrowded capital city of Bangladesh, has topped the list of cities with the worst air quality with an AQI index of 173 at 9:05am today (19 April). The air was classified as 'unhealthy', ...

With maximum temperatures already hovering between 37 and 38 degrees Celsius this week, Delhi is inching closer to a much hotter spell ahead ...

On Saturday morning, Delhi's air quality improved considerably, moving from the "poor" to the "moderate" category. At 8 a.m.

Weather conditions can influence air quality and the impact of the Masters could be more or less pronounced depending on these conditions.

Air quality is measured by the Air Quality Index, or AQI. The index was created by the Environmental Protection Agency in 1999. When the AQI exceeds 50, air quality alerts, or AQAs, are issued. Above ...

Air pollution levels in the Kathmandu Valley have once again risen to a high level. According to the latest records, Kathmandu currently ranks as the second most polluted city in the world.As per data ...

Air quality is measured by the Air Quality Index, or AQI. The index was created by the Environmental Protection Agency in 1999. When the AQI exceeds 50, air quality alerts, or AQAs, are issued. Above ...

The India Meteorological Department has forecast a partly cloudy sky and issued a yellow alert for heatwave conditions.