The comprehensive cleanliness is calculated based on the concentration of dust and odor (gas) and is classified into 4 grades according to the degree of air pollution, including red, orange, yellow and green.
color | Overall air quality | Concentration of PM (μg/m3) | Odor (gas) concentration | |||
|---|---|---|---|---|---|---|
State | PM10 (Fine Dust) | PM2.5 (Ultrafine Dust) | PM1.0 (Very Fine Dust) | State | Level | |
Red | Poor | 255 or more | 56 or more | 56 or more | Very strong | 4 |
Orange | Unhealthy | 155~254 | 36~55 | 36~55 | Strong | 3 |
Yellow | Moderate | 55~154 | 13~35 | 13~35 | Normal | 2 |
Green | Good | 54 or less | 12 or less | 12 or less | Weak | 1 |
The overall cleanliness can be determined from the indicator light and the color of the status panel %(integrated cleanliness).
The color of the overall cleanliness is determined according to the dust concentration and the odor (gas) concentration, whichever is worse.