API readings in the Klang Valley have increased in the last four hours.
According to the Department of Environment (DOE), Batu Muda and Cheras in Kuala Lumpur recorded API readings of 198 and 160 respectively at 11am, as opposed to their lower readings of 191 and 157 which was recorded earlier at 7am.
Banting, Kuala Selangor and Shah Alam’s API readings also increased from 178 to 180, 117 to 128 and 157 to 162 respectively.
Muar showed signs of improving by a decreased API reading of 132 as opposed to 148 which was recorded this morning.
The API reading in Port Dickson, Negeri Sembilan went down to 292 from the 335 API reading at 7am.
Twenty six areas recorded moderate API readings, 21 areas were classified as unhealthy while three areas including Port Dickson recorded very unhealthy readings.
The two other areas which recorded very unhealthy readings were Port Klang and Kemaman at 288 and 253 respectively.
The air pollutant index classifies readings from 0 to 50 as good, 51 to 100 as moderate, 101 to 200 as unhealthy, 201 to 300 as very unhealthy and readings of 301 and above as hazardous.