Taipei--The air quality in Yunlin, Chiayi and Tainan in southern Taiwan is expected to deteriorate to a poor quality on Sunday, the Environmental Protection Administration (EPA) said Saturday.
The air quality index (AQI) is flashing a "red light" for the three municipalities, the fourth highest level on the six-color coded system on the EPA's Taiwan Air Quality Monitoring Network.
The red light warns that residents of Yunlin, Chiayi and Tainan should cut outdoor activities and wear masks when they go out.
Meanwhile, sensitive groups in central Taiwan, Kaohsiung, Pingtung and the outlying islands of Kinmen and Matsu should also be on the alert as the AQI for those areas is flashing an orange light for Sunday, the EPA said.
Air quality in the rest of the country will be moderate to good, it said.
The EPA's color-coded index takes into account the concentration of ozone, PM2.5 and PM10 particles, carbon monoxide, sulfur dioxide and nitrogen oxides in the air.
On the EPA color scale, green represents good air quality, with a pollutant reading of less than 50; yellow indicates moderate quality with a reading of 50-100; orange means unhealthy for sensitive groups with a reading of 101-150; red indicates unhealthy air quality with a range of 151-200; purple signifies very unhealthy at 201-300; and maroon represents a hazardous level of 301-500.
Source: Focus Taiwan News Channel