Harbin, China air pollution: Air Quality Index explained

The video explains how car exhausts contribute to particulate matter, which is identified by aerodynamic diameters and linked to health issues. Fine particles, smaller than 2.5 micrometers, pose significant health risks as they penetrate deep into the lungs. The air pollution index measures air quality, with 100 points being unhealthy and 300 points considered dangerous.

What is particulate matter and how is it identified?

What are the health problems associated with particulate matter?

How small is fine particulate matter compared to a human hair?

Explain how particulate matter can reach deep into the lungs.

What is considered an unhealthy air pollution index?