Haze? Penang schools ready to call off outdoor activities once API crosses 100, shut if over 200

GEORGE TOWN, Aug 14 — Schools in areas recording an unhealthy Air Pollutant Index (API) reading will be required t...

Some preschools are monitoring air quality readings as often as every two hours, while others have prepared indoor activities and air purifiers as Singapore faces a heightened risk of severe haze in the second half of the year.