PETALING JAYA: The haze looks to be back if the air in Cheras is any indication. The air pollutant index (API) in Cheras showed the district has moved into the unhealthy zone of 105 at 2pm Monday.
Other areas on the west coast with API close to unhealthy levels are Port Dickson (89) and Banting (92). Balok Baru in Kuantan recorded an API of 98.
The air in Malacca is also close to unhealthy with the city centre and Bukit Rambai recording API of above 85.
Areas showing worsening API are Kuala Selangor (80), Port Klang (80), Petaling Jaya (78), Shah Alam (77), Batu Muda (78), Putrajaya (70).
The API reading could change due to shifting wind conditions. The Department of Environment issues hourly API reading on its website.
An API reading of between 0 and 50 is considered good, 51 to 100 (moderate), 101 to 200 (unhealthy), 201 to 300 (very unhealthy), and 301 and above (hazardous).
The API is calculated based on five major air pollutants, namely Sulphur Dioxide (SO2), Nitrogen Dioxide (NO2), Ground Level Ozone (O3), Carbon Monoxide (CO) and particulate matter with a diameter below 10 micrometers (PM10).