Taipei--Air quality was unhealthy for sensitive groups in several areas in southwestern Taiwan while the rest of the country's air was ranked as good or moderate on Sunday, according to the Environmental Protection Administration's Taiwan Air Quality Monitoring Network.
As of 10 a.m., air quality flashed orange in Douliu Township of Yunlin County, Chiayi City, several districts of Tainan and Kaohsiung, and the offshore county of Kinmen. Also in Beitun District of Taichung, central Taiwan, an orange signal flashed at a mobile monitoring station.
It indicates air quality is unhealthy for sensitive groups such as young children, the elderly and people with chronic disease, according to the network (http://taqm.epa.gov.tw/taqm/en/).
Air quality flashed either green (good) or yellow (moderate) in the rest of the country. The eastern counties of Yilan and Pingtung enjoyed good air on Sunday, the monitoring data shows.
The EPA's six-color scale takes into account ozone, PM2.5 and PM10 particulates, carbon monoxide, sulfur dioxide and nitric oxide concentrations in the air.
Green represents good air quality with an index reading of 0-50; yellow indicates moderate air quality with a reading of 50-100; orange means unhealthy air quality for sensitive groups with a reading of 101-150; red indicates unhealthy quality with a range of 151-200; purple signifies very unhealthy levels at 201-300; and maroon represents hazardous levels at a reading of 301-500.
Source: Focus Taiwan News Channel