haze over singapore

2015 air asian bad borneo buildings burn burning business center centre change city climate danger dangerous dry environment exceed fire fires forest gray grey hazadous hazard haze hazy health index indonesia irresponsible kalimantan landmarks level levels low matter metal micro micron modern nino october office outdoor outdoors over particles particulate pollutants pollution poor psi quality rain rise september singapore smoke smokey southeast sumatra tropical unhealthy very visibility weather worst