PETALING JAYA: No areas in the country recorded unhealthy air quality as of 5pm on Tuesday (Oct 27), according to the Air Pollutant Index Management System (APIMS).
Samalaju in Sarawak, which was the only unhealthy area at 8am with a reading of 152, fell to 100, the top of the moderate range.
The six Sarawak areas that were unhealthy at 3pm on Monday all recorded moderate readings. They were IPD Serian (78), Kuching (77), Samarahan (75), Sibu (73), Sarikei (67) and Mukah (62).
However, readings in parts of Johor rose during the day, with Batu Pahat and Kluang both at 90, up from 79 and 81 respectively at 8am.
Among areas with moderate readings, the highest were Samalaju (100), Batu Pahat (90), Kluang (90), Bintulu (88) and Batu Muda in Kuala Lumpur (86).
They were followed by IPD Serian (78), Kuching (77), Sri Aman (75), Samarahan (75) and Keningau in Sabah (74).
Meanwhile, 48 areas recorded moderate readings, up from 43 at 8am, while 20 areas had good air quality, down from 24.
These were Port Dickson, Kota Kinabalu, Kimanis, Tanjung Malim, Kuala Selangor, Sungai Petani, Kemaman, Kota Baru, Kuala Terengganu, Paka, Seberang Jaya, Minden, Besut, Kulim Hi-Tech, Kangar, Taiping, Jerantut, Alor Star, Balik Pulau and Langkawi.
API readings of between zero and 50 indicate good air quality, 51 to 100 moderate, 101 to 200 unhealthy, 201 to 300 very unhealthy, while readings above 300 are categorised as hazardous.
API data is released hourly based on readings from 68 air quality monitoring stations nationwide.
