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PM2.5 in Singapore now

As of 7:00 pm SGT, 18 October 2026, NEA’s 1-hr PM2.5 is highest in Central at 74 µg/m³. Use the 1-hr reading for the next hour; the 24-hr reading tracks exposure over the past day.

Today’s readingsNEA · updated hourly
As of 7:00 pm SGT · 18 Oct 2026Official · NEA
Highest region · Central1-hr PM2.5 · µg/m³
74µg/m³Band II · ElevatedRange across five regions: 37–74 µg/m³24-hr PM2.5 in Central: 95 µg/m³
  • North37
  • South69
  • East59
  • West68
  • Central74
Official PM2.5 by region, NEA (µg/m³) · As of 7:00 pm SGT, 18 October 2026
Region1-hr PM2.524-hr PM2.5
North37Band I · Normal61
South69Band II · Elevated87
East59Band II · Elevated92
West68Band II · Elevated137
Central74Band II · Elevated95

MOH advice for the next hour at the highest regional 1-hr PM2.5 (74 µg/m³, Band II · Elevated)

EveryoneReduce strenuous outdoor activity for the next hour
Vulnerable personsAvoid strenuous outdoor activity for the next hour

Full health guide

1-hr PM2.5 over the last 12 hours

Hourly 1-hr PM2.5 (µg/m³), NEA. Missing hours are shown as no reading.
Hour (SGT)Highest of five regions · North, South, East, West, Central
7:00 pm74 Band II · ElevatedN 37 · S 69 · E 59 · W 68 · C 74
6:00 pm69 Band II · ElevatedN 36 · S 69 · E 67 · W 66 · C 69
5:00 pm82 Band II · ElevatedN 36 · S 35 · E 82 · W 68 · C 56
4:00 pm77 Band II · ElevatedN 37 · S 69 · E 70 · W 77 · C 58
3:00 pm83 Band II · ElevatedN 31 · S 56 · E 67 · W 83 · C 56
2:00 pm101 Band II · ElevatedN 31 · S 39 · E 63 · W 101 · C 52
1:00 pm125 Band II · ElevatedN 41 · S 69 · E 55 · W 125 · C 57
12:00 pm136 Band II · ElevatedN 52 · S 61 · E 58 · W 136 · C 65
11:00 am142 Band II · ElevatedN 54 · S 49 · E 52 · W 142 · C 88
10:00 am139 Band II · ElevatedN 72 · S 82 · E 71 · W 139 · C 117
9:00 am127 Band II · ElevatedN 75 · S 89 · E 107 · W 127 · C 122
8:00 am132 Band II · ElevatedN 79 · S 96 · E 109 · W 123 · C 132

Bar scale 0–300 µg/m³ · ticks at 55, 150 and 250 (band edges)

How it works

1-hr and 24-hr PM2.5: which to use

The 1-hr PM2.5 reading reflects the past hour, so it shows the current air; MOH suggests using it for activities in the next hour, such as an outdoor run. The 24-hr PM2.5 averages the past 24 hours and feeds the 24-hr PSI, which MOH and NEA use for planning ahead. NEA explains that if 1-hr PM2.5 stayed in the Normal band for a full day, the 24-hr PSI would be roughly Good to Moderate; in the Elevated band, roughly Unhealthy; High, roughly Very Unhealthy; Very High, roughly Hazardous. MOH · NEA FAQ.

PM2.5 bands and what MOH advises

MOH personal guide by 1-hr PM2.5 (for the next hour)
1-hr PM2.5EveryoneVulnerable persons
Band I · Normal (0–55 µg/m³)Continue with normal activitiesContinue with normal activities
Band II · Elevated (56–150 µg/m³)Reduce strenuous outdoor activity for the next hourAvoid strenuous outdoor activity for the next hour
Band III · High (151–250 µg/m³)Avoid strenuous outdoor activity for the next hourAvoid all outdoor activity for the next hour; may wear a mask to reduce exposure
Band IV · Very high (251+ µg/m³)Minimise all outdoor activity for the next hour; may wear a mask to reduce exposureAvoid all outdoor activity for the next hour; may wear a mask to reduce exposure

What PM2.5 is

PM2.5 means fine particles 2.5 micrometres across or smaller, the main pollutant in haze smoke. They are small enough to reach deep into the lungs. PM2.5 is a measured concentration in micrograms per cubic metre (µg/m³), not an index. NEA groups 1-hr readings into four bands: Normal (0–55), Elevated (56–150), High (151–250) and Very High (251 and above). Readings are in the Normal band about 99% of the time. NEA 1-hr PM2.5 bands · NEA FAQ.

Sources: NEA 1-hr PM2.5 readings · HealthHub: protect yourself against haze · haze.gov.sg (NEA)

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