The Air Quality Index is the Environmental Protection Agency's (EPA) tool for communicating about outdoor air quality and how ...

Dhaka, the overcrowded capital city of Bangladesh, has ranked 9th on the list of cities with the worst air quality with an ...

In a significant improvement in air quality, Delhi recorded an average Air Quality Index (AQI) of 85 on Saturday, marking the lowest level in the past three years for the period between January 1 ...

Delhi recorded its lowest Air Quality Index (AQI) of 2025 on Friday, with an average AQI of 121, according to the Central Pollution Control Board’s (CPCB) daily AQI bulletin. The Commission for ...

The Jefferson County Department of Health issued a Code Red Air Quality Alert for PM2.5 levels for Tuesday, March 11, warning ...

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 ...

The Commission for Air Quality Management also said that Saturday, March 15, is also 2025's first day with a ‘Satisfactory’ ...

An air quality index (AQI) of 0-50 is considered good, while an AQI between 50-100 is moderate, from 100-150 is poor, and from 150-200 is considered unhealthy. AQI of 200-250 is severe ...

Swiss air quality technology company, IQAir, released its 7th annual World Air Quality Report, highlighting trends in air ...

Delhi's air quality remained in the 'moderate' category for the fourth day on Friday morning. The Air Quality Index (AQI) was recorded at 150 at 8 am on March 21, according to the Central Pollution ...

After three years, Delhi records an Air Quality Index (AQI) of 85, prompting the Commission for Air Quality Management (CAQM) to revoke Stage I measures of the Graded Response Action Plan (GRAP).

Delhi's air quality improved to the 'satisfactory' category on Sunday, with an Air Quality Index (AQI) of 81, according to the Central Pollution Control Board (CPCB). This is the lowest AQI recorded ...