As the smoke haze situation can deteriorate, the public is advised to refer to NEA's website for the hourly updates of 3-hr PSI. The relevant health advisory depending on the severity of the haze situation will also be posted on NEA's website. In the event the 24-hr PSI go beyond 150, the public is advised to obtain respiratory masks which can be purchased from most pharmacies for those members of their families with repiratory problems. In the event the 24-hr PSI go into the very unhealthy range (201 - 300), the public is advised to avoid unnecessary outdoor activities and to stay in a room equipped with a portable air cleaner. Information on such portable air cleaners can be found in NEA's website.