Taipei--Air quality was generally good or moderate in the northern, central and southeastern areas of Taiwan on Sunday, but was unhealthy for sensitive groups in the south, according to the Environmental Protection Administration's Taiwan Air Quality Monitoring Network.
As of 9 a.m., air quality flashed "orange" at monitoring stations in Nantou County's Zhushan township, Yunlin County, Chiayi County, Tainan, Kaohsiung and Pingtung County, according to the network (http://taqm.epa.gov.tw/taqm/en/).
It means the air quality in those areas was unhealthy for sensitive groups such as young children, the elderly and people with a chronic disease.
Meanwhile, air quality flashed "green (good)" in northern Taiwan, as well as Taichung's Dali district and Changhua County's Erlin township in the central region, Yilan County in the northeast, Taitung County in the southeast, and the offshore islands of Matsu and Penghu.
In the rest of the country, air quality was "yellow," signifying moderate levels of pollution, according to the EPA data.
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 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