SINGAPORE – Haze returned to Singapore on Saturday (Sept 21) pushing air quality to unhealthy levels in some parts of the country as doctors warned that patients with pre-existing medical conditions could experience increased discomfort.

Those who suffer from migraines are at greater risk of attacks on poor air quality days, doctors said.

Please subscribe or log in to continue reading the full article. Learn more about ST PREMIUM.

Enjoy unlimited access to ST’s best work

  • Exclusive stories and features on multiple devices
  • In-depth analyses and opinion pieces
  • ePaper and award-winning multimedia content