Taipei, Feb. 5 (CNA) The seasonal northeasterly winds that brought colder weather to Taiwan weakened Tuesday, but temperatures are expected to fall quite a bit overnight, according to the Central Weather Bureau (CWB).
The CWB said the easing of the seasonal winds should stabilize the weather, with daytime temperatures expected to hit 20-23 degrees Celsius in northern Taiwan, 25-26 degrees in central Taiwan and 26-28 degrees in the south on Tuesday.
After night falls, however, the mercury is forecast to drop to 16-17 degrees in northern and central Taiwan and to 18-19 degrees in the south, the CWB said, warning of high day-night temperature differences.
The lowest temperature in low-lying parts of Taiwan early Tuesday morning was 15.5 degrees, recorded at the CWB's Xinwu monitoring station in Taoyuan.
Drier weather is forecast for Tuesday, with only sporadic showers expected in northern, eastern and southern Taiwan during the day.
The stable weather is expected to continue into Wednesday and Thursday, resulting in even lower amounts of precipitation before another weather system moves in on Friday, the CWB said.
The CWB warned of possible foggy conditions in western Taiwan and on Kinmen and Matsu islands early in the morning and late at night over the next couple of days, undermining visibility.
Meanwhile, the air quality in northern Taiwan, Yilan, Hualien, Taitung and the Penghu islands is expected to be good to fair on Tuesday, according to the Environmental Protection Administration (EPA).
Due to the lack of wind to disperse atmospheric pollutants, however, the Air Quality Index (AQI) was flashing an "orange alert" through most of central and southern Taiwan, indicating unhealthy air for sensitive groups, according to the EPA.
Source: Focus Taiwan News Channel