KUALA LUMPUR, Oct. 3 (Xinhua) -- Malaysia will update its national haze action plan to accelerate measures that need to be taken by government agencies involved in haze disaster management, a Malaysian official said on Tuesday.

The National Disaster Management Agency will activate the disaster management committee at district, state or central levels when the Air Pollution Index (API) reading exceeds 150 for a period of more than 24 hours, Wan Abdul Latiff Wan Jaffar, director-general of the Department of Environment, said in a statement.

According to the country's air quality rating, an API reading of zero to 50 is "good," 51 to 100 is "moderate," 101 to 200 is "unhealthy," 201 to 300 is "very unhealthy," and 301 and above is "hazardous." Multiple areas in the country have been recording levels above 150 for several days.

"All activities outside the classroom will be stopped when the API reading goes beyond 100. Schools, kindergartens and nurseries will be closed immediately when the API reading exceeds 200," he said.

"Cloud seeding operations will be carried out subject to the presence of clouds and suitable weather at an API reading above 150 for a period of more than 24 hours," he added.