Band 1
Normal
0–55 µg/m³
Continue with normal activities.
THE OUTDOOR ACTIVITY GUIDE
Outdoor plans
during Singapore haze.
For activities in the next few hours, use the latest 1-hour PM2.5 reading and personal guide. For tomorrow’s plans, use the 24-hour PSI forecast and corresponding health advisory.
From NEA’s “How to plan your outdoor activities during haze” poster, June 2026.
Heading out in the next few hours?
Use the 1-hour PM2.5 readings and personal guide.
Check the latest 1-hour PM2.5 reading for your region, then use the band below to find the activity guidance. The advice differs for vulnerable persons.
Illustration being prepared
Band 2
Elevated
56–150 µg/m³
Reduce strenuous outdoor activity for the next hour.
Vulnerable persons: avoid strenuous outdoor activity for the next hour.
Band 3
High
151–250 µg/m³
Avoid strenuous outdoor activity for the next hour.
Vulnerable persons: avoid all outdoor activity for the next hour.
Band 4
Very high
≥251 µg/m³
Minimise all outdoor activity for the next hour.
Vulnerable persons: avoid all outdoor activity for the next hour.
Vulnerable persons include the elderly, pregnant women, children, and persons with chronic lung disease or heart disease.
This guide is not intended to be prescriptive. For the general population, symptoms that may arise from short-term exposure such as throat or eye irritations are expected to resolve after withdrawing from the exposure.
Planning outdoor activities for tomorrow?
Use the 24-hour PSI forecast and health advisory.
The 24-hour PSI forecast and the corresponding health advisory should be used when planning for next-day outdoor activities.
Illustration being prepared
The table has five forecast categories. On a small screen, scroll horizontally to read every column.
| Population | Good0–50 | Moderate51–100 | Unhealthy101–200 | Very unhealthy201–300 | Hazardous>300 |
|---|---|---|---|---|---|
| Healthy persons | Normal activities | Normal activities | Reduce prolonged or strenuous outdoor physical exertion | Avoid prolonged or strenuous outdoor physical exertion | Minimise outdoor activity |
| Elderly, pregnant women, children | Normal activities | Normal activities | Minimise prolonged or strenuous outdoor physical exertion | Minimise outdoor activity | Avoid outdoor activity |
| Persons with chronic lung disease, heart disease | Normal activities | Normal activities | Avoid prolonged or strenuous outdoor physical exertion | Avoid outdoor activity | Avoid outdoor activity |
Forecast availability: the poster notes that the 24-hour PSI forecast is available when air quality is in the Unhealthy range.
The impact of haze is dependent on one’s health status, PSI, and the duration and intensity of outdoor activity. Reducing outdoor activities and physical exertion can help limit the ill effects. Persons who are not feeling well should seek medical attention.
What the terms mean
Explanatory notes from the poster:
- Reduce
- Do less.
- Minimise
- Do as little as possible.
- Avoid
- Do not do.
- Prolonged
- Continuous exposure for several hours.
- Strenuous
- Involving a lot of energy or effort.
A LITTLE PREPARATION
Keep an N95
within reach.
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FOR YOUR INDOOR SPACE
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purifier listings.
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Sources & current guidance
This page adapts the guidance from NEA’s poster, How to plan your outdoor activities during haze, dated . It is a dated reference, not a live health advisory or personalised medical advice.
Current air quality readings and more information are available at haze.gov.sg, nea.gov.sg and the myENV mobile app. See also NEA’s air pollution FAQs and MOH’s current haze health advice.
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