According to the Central Pollution Control Board, which particulate size is most harmful to human health?

Particulate matter that measures 2.5 micrometers or less, commonly referred to as PM2.5, poses the greatest risk to human health. This is largely due to its ability to penetrate deep into the respiratory tract, reaching the lungs and potentially entering the bloodstream.

The small size of PM2.5 allows it to remain suspended in the air for extended periods and travel long distances, increasing exposure among populations. Studies have linked exposure to PM2.5 with serious health issues, including respiratory diseases, cardiovascular problems, and even adverse effects on the nervous system.

While larger particulate sizes may still cause health issues, their impact is typically less severe than that of PM2.5. The smaller the particle, the deeper it can penetrate into the lung tissues, which is why PM2.5 is recognized as a significant public health concern.