What is PM2.5?
There are many pollutants present in the air. Particles that float in the air and resemble dust are known as Particulate Matter (PM). The size of these particulate matter varies. Particles with a diameter of ≤2.5 micrometers (μm) are called Fine Particulate Matter (PM2.5), measured in micrograms per cubic meter (μg/m³).
Read More >What is PM2.5?