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Vocalogy

Haze and Your Festive Performance: Postpone, Move Indoors or Carry On?

A hazy outdoor stage with festive lights, and a blue and green ribbon leading toward a glowing indoor doorway.

You’ve rehearsed for weeks. The performance is this weekend, and the haze forecast looks bad. Should you go ahead?

This guide is for singers and organisers, and it gives you a calm way to decide. It isn’t medical advice.

Step 1: Check the official readings

Use the National Environment Agency (NEA) haze updates. NEA suggests the 24-hour PSI forecast for planning the next day’s outdoor activity, and the 1-hour PM2.5 readings for activities you’re about to do now. Its advice depends on the PSI level and on who you are [1]:

  • Healthy adults: reduce prolonged or strenuous outdoor exertion when the 24-hour PSI is Unhealthy, and avoid it when it’s Very Unhealthy.
  • The elderly, pregnant women and children: more caution. Minimise prolonged or strenuous outdoor exertion at Unhealthy, and minimise outdoor activity at Very Unhealthy.
  • People with chronic lung or heart conditions: avoid prolonged or strenuous outdoor exertion when the PSI is Unhealthy.

The Ministry of Health (MOH) adds that children, the elderly and people with chronic lung or heart disease are more sensitive to the health effects of haze, and that pregnant women are advised to reduce their exposure [2]. Read more: Haze – National Environment Agency

NEA’s advice is about outdoor exertion in general and doesn’t mention singing. Standing for a long time, carrying equipment and projecting your voice outdoors all add to the time and effort, so treat the guidance as your starting point. If you have a health condition, ask your doctor.

Step 2: Decide

  • Outdoor event, readings Unhealthy or worse: move indoors or postpone. Take extra care if singers or the audience include children, older adults or anyone with a health condition.
  • Outdoor event, readings comfortable: carry on, with a shorter programme and a plan B.
  • Indoor event: carry on, with extra breaks.
  • You’re unwell, or unsure: you’re allowed to step out, and that’s a reasonable decision.

Step 3: If you carry on

  • Shorten the programme. Fewer pieces, with breaks.
  • Skip the long warm-up outdoors. Warm up indoors.
  • Use amplification, so no one has to push to be heard.
  • Make it optional. Anyone can opt out without pressure.
  • Set a cut-off. Agree beforehand when you’ll stop if readings change.
  • Talk less and drink water.

Step 4: If you’re the organiser

You’re responsible for deciding early and telling people clearly. Here’s a message you can adapt:

“Because of the haze forecast, tonight’s carolling will be [moved indoors to X / postponed to Y]. If you’re unwell, or you’d rather not take part, that’s completely fine. Thank you for understanding.”

Step 5: Afterwards

Rest your voice and speak at a normal volume. The National Institute on Deafness and Other Communication Disorders (NIDCD) advises seeing a doctor if your voice has been hoarse for more than three weeks, especially without a cold or flu, or if you have pain when speaking or swallowing [3]. We’d add one thing of our own: please don’t sing through it until you’ve been checked. Vocalogy provides voice training and coaching, and we don’t diagnose or treat medical problems.

The bottom line

Festive performances matter, and so do the people singing and listening. Check the official readings early, decide on your plan B before you need it, and tell everyone clearly. Move indoors, shorten the programme or postpone if the readings call for it. The show can wait for a better day, and everyone should be able to make an informed choice about taking part.

Where to start

If you’d like to prepare for your performance indoors, explore 1:1 coaching or ask us on WhatsApp.

References

  1. National Environment Agency. Haze Situation Updates (4, 9, 10 and 14 October 2026). https://www.nea.gov.sg/media/news/advisories/index/haze-situation-update-14-october-2026
  2. Ministry of Health, Singapore. FAQ: Impact of Haze on Health. https://www.moh.gov.sg/newsroom/faq-impact-of-haze-on-health/
  3. National Institute on Deafness and Other Communication Disorders. Hoarseness (fact sheet, updated October 2011). https://www.nidcd.nih.gov/sites/default/files/Documents/health/voice/NIDCD-Hoarseness.pdf

Haze advice changes quickly. This article was last reviewed on 15 October 2026, so please check NEA’s live readings.