Is it safe to exercise outdoors in haze?

It depends on the 1-hour PM2.5. Up to 55 µg/m³ normal activities are fine; at 56–150 reduce strenuous exercise; at 151–250 avoid it; above 250 minimise all outdoor activity (NEA). Vulnerable people should avoid strenuous activity from 56.

How long will the haze last?

Nobody can promise a date. It lasts while fires keep burning and the wind carries smoke your way, and it eases with steady rain. Check the next-24-hours chart for the likely trend and the official outlook for the multi-day picture.

Who counts as vulnerable in haze?

NEA's guidance singles out the elderly, pregnant women, children, and people with chronic lung disease or heart disease. They should avoid strenuous activity from Band 2 (above 55 µg/m³).

Outdoor dining and events during haze

Above 150 µg/m³ move events indoors or postpone. At 56–150 prefer indoor or covered venues and keep them short. Plan for a backup venue, because the reading can change within hours.

Singapore now · as at 10:00 SGT

100 µg/m³ · Elevated (1-hour PM2.5, NEA official, worst region)

Prefer indoor/covered venues; keep it short.

Check your area →

What to do at each level

By 1-hour PM2.5 (µg/m³) band
Band	Healthy adults	Vulnerable people
Normal 0–55	Good to go.	Good to go.
Elevated 56–150	Prefer indoor/covered venues; keep it short.	Prefer indoor/covered venues; keep it short.
High 151–250	Move indoors or postpone.	Move indoors or postpone.
Very High ≥251	Move indoors or postpone.	Move indoors or postpone.

Basis: General precaution informed by NEA's bands.

Planning ahead

Check the 24-hour outlook for the day and the hourly chart for the time of your event, and agree on a decision time with guests.

Protecting vulnerable guests

Offer indoor seating for children, older guests, pregnant guests and people with lung or heart conditions.

Steps

Check the hourly forecast and 1-hour reading for the venue's area.
56–150: prefer covered or indoor venues, keep it short.
Above 150: move indoors or postpone.
Have a backup venue and a decision time.

Sources

NEA 1-hour PM2.5 readings (Singapore) — National Environment Agency (NEA), Singapore · official site · API / docs
haze.gov.sg regional haze situation and outlook — NEA, drawing on the ASEAN Specialised Meteorological Centre · official site

More guides

Sports training and matches in haze · Running and cycling in haze · Children, school PE and recess in haze · Commuting and masks in haze · Windows, purifiers and indoor air during haze · Drying laundry outdoors in haze · Pets in haze

General information, not medical advice. Follow your doctor and your school, league or organiser's final call. Data come from official sources; see data sources.