Taipei--The air quality was mostly poor in western Taiwan Monday but eastern Taiwan and the offshore islands were seeing moderate to good quality air, according to the Environmental Protection Administration's Taiwan Air Quality Monitoring Network.
For Tuesday, the air quality in the southwestern cities and counties of Yunlin, Chiayi and Tainan is expected to flash orange (unhealthy for sensitive groups) while that in Kaohsiung and Pintung further to the south will likely be red, indicating unhealthy air quality for the general public, according to the network (http://taqm.epa.gov.tw/taqm/en/AqiForecast.aspx).
The air quality in the rest of western Taiwan -- the central and northern regions -- will be moderate (yellow) Tuesday while Yilan, Hualien and Taitung Counties are expecte to enjoy good quality air (green).
On Monday, generally unhealthy air (red) was reported from Yunlin to Pingtung, the southernmost county of Taiwan while the air quality in central and northern Taiwan flashed orange. Hsinchu and Miaoli Counties were the only regions in western Taiwan to see moderate air quality on that day.
In Yilan and the offshore islands of Kinmen, Matsu and Penghu, the air quality was also moderate. Hualien and Taitung had good quality air.
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 an reading of 301-500.
Source: Focus Taiwan News Channel