Leviste said there was zero visibility in some areas because of the thick ashfall on Sunday night. Some roads are covered with up to two inches of mud, he added.
Local television footage showed villagers covered in volcanic ash evacuated to safer ground overnight. People living in high-risk towns near the volcano donned masks for safety.
The institute said explosion of fine, dense ash drifted in many areas in provinces south and north of Manila.
"Fine ashfall can cause irritation and breathing problems especially among the elderly and children and it is particularly dangerous to the health," the institute warned. In addition, it said that "areas of ashfall have also experienced sulfurous smell which can also cause irritation."
The institute urged the affected residents to wear facemasks or damp cloth or towel, warning of the effects of "heavy and prolonged ash fall."
"Motorists are advised to drive with extreme caution as ash can cause poor visibility and, when wet, can make roads slippery," the institute said.
Civil aviation authorities have also advised aircraft to avoid airspace around Taal Volcano "as airborne ash and ballistic fragments from the eruption column pose hazards to aircraft."
The Manila International Airport Authorities shut down the operation of the Ninoy Aquino International Airport on Sunday following the eruption, resulting in the cancellation of international and domestic flights. Thousands of passengers have been stranded as a result.
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