26 areas recorded unhealthy Air Pollutant Index (API) readings with the highest at 152 in Pasir Gudang, Johor, as at 1pm.

According to the Department of Environment's (DOE) portal, other areas with unhealthy API readings were Port Kelang (146); Kota Tinggi (144); Shah Alam (139); Larkin Lama, Johor (138); Bandaraya Melaka (134); Putrajaya and Banting, Selangor (each recorded 132); Bukit Rambai, Melaka (131); Kuala Selangor (130); and Petaling Jaya (125).

Seremban (129); Muar (124); Port Dickson (123); Batu Muda (120); Cheras, Kuala Lumpur (119); Nilai (118); Tanjung Malim (117); Langkawi (110); Bakar Arang, Alor Setar (109); USM, Kangar and Alor Setar (each recorded 107); Seberang Jaya (106); SMK Tanjung Chat, Kota Baharu (105); and Seri Manjung (101).

Only two areas, Labuan and Limbang, Sarawak registered healthy air quality at 45 and 39 respectively, while other areas recorded moderate API readings.

An API reading of 0 to 50 indicates good air quality; 51 to 100, moderate; 101 to 200, unhealthy; 201 to 300, very unhealthy and 300 and above, hazardous.

The public can visit the website at http://apims.doe.gov.my/v2 to know the current API readings.