The first car free day in Delhi yesterday saw a massive reduction in air pollution levels when compared to what could be expected on a normal day, according to a report released by the Centre for Science and Environment (CSE).

A report was released following the event which stated: “Today (Thursday), the air particulate matter (PM 2.5) was 265 micrograms per cubic metre (cu m) in comparison to a normal day, when the particulate normally was 689 micrograms per cu m,” said the report released on Thursday evening.

Particulate Matter (PM2.5) is an air pollutant that is a concern for people’s health when its levels in air are high. PM2.5 are tiny particles in the air that reduce visibility and cause the air to appear hazy when levels are elevated.

The car-free day in the Indian capital took place between the Red Fort and India Gate with Delhi Chief Minister Arvind Kejriwal leading a cycle rally in the morning.

The exposure monitoring comparison was carried out by the CSE on October 21st and during the car-free event on Thursday.


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