Taipei--The air quality was generally good or moderate around Taiwan on Friday, with a few exceptions in central Taiwan, according to the Environmental Protection Administration's Taiwan Air Quality Monitoring Network.
As of 11 a.m., the air quality at all monitoring stations around the country flashed either "green" (good air quality) or "yellow" (moderate), except in Changhua County's Xianxi, and Yunlin County's Mailiao and Taixi Townships.
The air quality in those three areas flashed "orange," indicating air quality unhealthy for sensitive groups such as young children, the elderly and people with a chronic disease, according to the network (http://taqm.epa.gov.tw/taqm/en/).
For Saturday, Hualien and Taitung Counties in eastern Taiwan will continue to have good air quality while the rest of the country is expected to see moderate air quality.
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" or fair 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