PETALING JAYA - A change in wind patterns has helped clear the haze that has choked most of the nation for the past few days.
This followed a drizzle in Selangor and Kuala Lumpur on Tuesday evening which helped reduce the thickness of the smog.
There was a significant improvement in the Air Pollutant Index (API) readings yesterday, with 42 areas around the country registering "Moderate" as of 5pm.
Only three areas are categorised as "Unhealthy" - Malacca City (101), Bukit Rambai (107) and Nilai (153).
API readings between 0-50 are considered "Good"; 51-100 as "Mode-rate", 101-200 as "Unhealthy" and 201-300 as "Very Unhealthy". Any reading above 300 is "Hazardous".
Port Klang, which recorded a high of 495 on the API at 8am on Tuesday, recorded a much healthier reading of 115 at noon yesterday.
Petaling Jaya, meanwhile, registered an API reading of 82 (Moderate) at 5pm yesterday, as opposed to 181 (Unhealthy) a day earlier.
The Department of Environment (DOE) said the south westerly winds, which were currently at a speed of less than 10kph and blowing from various directions, had dispelled the haze to a wider area.
It said the rain had also helped to reduce haze particles, which resulted in improved air quality.