Taipei--The air quality was moderate to good around the country Sunday with the exception of parts of Kaohsiung City and neighboring Pingtung in southern Taiwan, according to the Environmental Protection Administration's Taiwan Air Quality Monitoring Network.
In northern, central and eastern Taiwan, a green light is flashed, meaning that the air quality in those regions is good, while in most parts of the Yun-Chia-Nan area, a yellow light is issued, indicating that the air quality is moderate, according to the network (http://taqm.epa.gov.tw/taqm/en/AqiForecast.aspx).
At the same time, an orange light is flashed for Kaohsiung and Pingtung areas in the south, indicating the air quality will be unhealthy for sensitive groups.
The EPA's 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 a pollutant reading of less than 50; yellow indicates "moderate" at 50-100; orange means "unhealthy for sensitive groups" with a reading of 101-150; red indicates "unhealthy" with a range of 151-200; purple signifies "very unhealthy" with a level of 201-300; maroon represents "hazardous" with a reading of 301-500.
Source: Focus Taiwan News Channel