Which mask works in haze, and do I need one?

A well-fitted N95, KN95 or FFP2 respirator filters fine smoke particles; ordinary surgical masks do not filter them well. Most healthy people on short trips do not need one at moderate levels, but it helps for longer outdoor exposure.

When are schools closed because of haze?

Each government and school decides. Singapore's Haze Task Force said school closures would be considered when the next-day air-quality forecast exceeds a 24-hour PSI of 300 (CNA, 9 October 2026); in Malaysia, schools have closed in areas where the API passed 200.

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).

Commuting and masks in haze: what actually helps

For short trips most healthy people need no special precautions up to about 150 µg/m³. For longer outdoor exposure use a well-fitted N95 or KN95 respirator; ordinary surgical masks do not filter fine smoke well. Above 250 avoid non-essential trips.

Singapore now · as at 10:00 SGT

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

No special precautions.

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	No special precautions.	No special precautions.
Elevated 56–150	No special precautions.	Short trips are fine; a fitted N95/KN95 helps. Surgical masks do not filter smoke well.
High 151–250	Short trips are fine; a fitted N95/KN95 helps. Surgical masks do not filter smoke well.	Short trips are fine; a fitted N95/KN95 helps. Surgical masks do not filter smoke well.
Very High ≥251	Avoid non-essential trips. If you must go, wear a fitted N95/KN95.	Avoid non-essential trips. If you must go, wear a fitted N95/KN95.

Basis: Mask and trip advice is a general precaution informed by NEA's bands, not a NEA rule.

Choosing a mask

N95, KN95 and FFP2 respirators are designed to filter fine particles, but only work if they seal around the nose and cheeks. A loose mask gives little protection. Children's faces may not fit adult masks.

Reducing exposure on the way

Prefer air-conditioned transport with recirculated air, use covered walkways, and avoid heavy exertion outdoors, such as cycling hard or carrying loads uphill.

Support for vulnerable people

Singapore's Haze Task Force has said N95 masks will be distributed to eligible vulnerable people once the 24-hour PSI exceeds 200 (CNA, 9 October 2026). Check current announcements, because arrangements can change.

Steps

Check the 1-hour PM2.5 before you leave.
Up to 150: short trips need no special precautions for healthy people.
For longer outdoor time, wear a well-fitted N95 or KN95.
Above 250: avoid non-essential trips.

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 · Windows, purifiers and indoor air during haze · Drying laundry outdoors in haze · Outdoor dining and events during 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.