Taipei--Air quality in Taiwan was mixed Tuesday, with eastern and northern Taiwan seeing good or moderate air quality while areas to the south of central Taiwan having air that was unhealthy for sensitive groups or even the general public, according to the Environmental Protection Administration's Taiwan Air Quality Monitoring Network.
As of 12 a.m., air quality in Tainan and most parts of Kaohsiung, Chiayi and Yunlin was unhealthy for the general public, according to the network (http://taqm.epa.gov.tw/taqm/en/).
Some parts of Changhua, Taichung, Nantou and Pingtung were seeing air that was unhealthy for sensitive groups such as young children, the elderly and people with a chronic disease, network data updated hourly showed.
In contrast, the eastern counties of Hualien and Taitung, parts of Yilan, Taoyuan and Keelung enjoyed good quality air and the rest of the country had moderate air quality.
For Wednesday, central Taiwan and regions to the south are expected to have poor air quality while the rest of the country could have 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 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