Taipei--Air quality in eastern Taiwan was good Saturday but mixed in the western half of the island and the offshore counties, according to the Environmental Protection Administration's Taiwan Air Quality Monitoring Network.
As of 11 a.m., Matsu Islands to the northwest of Taiwan, the southern tip of Pingtung County, some parts in Taipei City as well as the southeastern county of Yilan, Hualien and Taitung enjoyed good air quality, according to the network (http://taqm.epa.gov.tw/taqm/en/).
In the rest of the country, air quality was for the most part yellow (moderate) but that in some areas in Yunlin, Kaohsiung, Chiayi, Taichung, Hsinchu, Miaoli and Tainan was unhealthy for sensitive groups (orange) such as young children, the elderly and people with a chronic disease.
For Sunday, eastern Taiwan and Hsinchu, Miaoli Counties in the west are expected to have moderate air quality while the rest of the country could have air quality that would be unhealthy for sensitive groups.
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