PM2.5

PM2.5 refers to tiny particles in the air measuring 2.5 micrometers or smaller—about 30 times thinner than a human hair. Because of their small size, they can easily enter deep into the lungs and even reach the bloodstream. These particles originate from sources like vehicle emissions, industrial processes, and wildfires. Exposure to PM2.5 can cause health problems, especially for vulnerable groups such as children, the elderly, and those with pre-existing conditions, leading to respiratory and cardiovascular issues. Monitoring and reducing PM2.5 levels are vital for protecting public health and air quality.