Grey morning: The haze situation in Klang at 7.30am yesterday.
PETALING JAYA: The air pollution index (API) briefly spiked to unhealthy levels in several parts of the Klang Valley and Negri Sembilan. But, it was not caused by hotspots in Indonesia.
The Department of Environment (DOE) confirmed that the hazy conditions yesterday was due to local sources of pollution along with a decreased humidity of up to 60%.
