Important of air quality to daily life

Air quality is good or bad to reflect the degree of air pollution.
it is based on the level of the air pollutant concentrations. Air pollution is a complex phenomenon.
Particle counter is a best device to check air quality in another words is check fine particulate metters.
With handheld particle counter can check fine particulate matters under 0.3μm and 2.5μm.
Also can check the PM2.5 and PM10 depends on the WHO request. and tell you level too.