KUCHING, July 29 -- The Natural Resources and Environment Board (NREB) has detected moderate air quality at all 18 of its stations throughout Sarawak this morning.

As of 8am, Lundu recorded an air pollutant index (API) reading of 88 - the highest among the 18 stations - compared to 79 at 4pm yesterday.

The lowest API reading at 8am of 52 was recorded in Lubok Antu, which recorded a reading of 45 at 4pm yesterday.

Meanwhile, Sibu and Miri registered API readings of 75 and 68 respectively at 8am today compared to 63 and 68 at 4pm yesterday.

Kuching's API reading this morning was unchanged from the 74 recorded at 4pm yesterday.

An NREB spokesperson said the board uses Air Quality Monitoring Stations (AQMS) in Lundu, Tebedu, Lubok Antu, ...