An outpouring of volcanic gas in tandem with pollution smog has severely impacted the air quality of the Philippine capital city of Manila, prompting health warnings and school closures. Authorities have urged those within the vicinity to stay indoors and avoid any unnecessary travel. Regions most notably affected include Cavite, Laguna, and Batangas provinces. While the alert remains a level 1 on the five-level scale, exercising increased caution is advised as cases of respiratory irritation have already been reported. The aviation authority has also instructed pilots to avoid flying close to the volcano's summit.