SmogRank / Singapore

Air quality in Singapore

Singapore. PM2.5 from 3 low-cost sensors, updated hourly.

41.4 µg/m³
Unhealthy for sensitive groups

Latest hour (15:00 UTC), 2.8× the WHO 24-hour guideline.

Rank

24 h
–
not enough data
7 days
#10
of 2,330 · 67.1 µg/m³
30 days
#22
of 2,324 · 49.2 µg/m³
Year
–
not enough data

Why it ranks here

Unusually bad for Singapore. The last 7 days averaged 67.1 µg/m³, about 3.7× its typical day (18.2). A jump like this usually has a short-lived cause: likely smoke from fires, dust, or stagnant weather trapping local emissions.

Likely fire smoke. On Sep 29, when Singapore averaged 90.4 µg/m³ (its typical day: 18.2), NASA satellites detected 208 fires within 300 km (6 within 100 km). Smoke from those fires is a likely contributor; we don't check which way the wind blew, and mapped smoke can be high above the ground.

Based on Singapore's own measurements, with fire detections from NASA FIRMS and smoke maps from NOAA HMS; causes are the usual kinds for a pattern like this, not a confirmed source.

Last 4 days, hour by hour

15472026-10-01 00:00 UTC: 42.5 µg/m³2026-10-01 01:00 UTC: 43.3 µg/m³2026-10-01 02:00 UTC: 44.8 µg/m³2026-10-01 03:00 UTC: 47.0 µg/m³2026-10-01 04:00 UTC: 46.5 µg/m³2026-10-01 05:00 UTC: 45.1 µg/m³2026-10-01 06:00 UTC: 45.9 µg/m³2026-10-01 07:00 UTC: 40.1 µg/m³2026-10-01 08:00 UTC: 39.0 µg/m³2026-10-01 09:00 UTC: 38.0 µg/m³2026-10-01 10:00 UTC: 40.6 µg/m³2026-10-01 12:00 UTC: 42.5 µg/m³2026-10-01 13:00 UTC: 42.1 µg/m³2026-10-01 14:00 UTC: 41.1 µg/m³2026-10-01 15:00 UTC: 41.4 µg/m³Sep 28Sep 29Sep 30Oct 1

Times in UTC. Dashed line: WHO 24-hour guideline (15 µg/m³).

Every day for a year

SepNovDecJanFebMarAprMayJunJulAugSepMonWedFri2025-09-29: no data2025-09-30: no data2025-10-01: no data2025-10-02: no data2025-10-03: no data2025-10-04: no data2025-10-05: no data2025-10-06: no data2025-10-07: no data2025-10-08: no data2025-10-09: no data2025-10-10: no data2025-10-11: no data2025-10-12: no data2025-10-13: no data2025-10-14: no data2025-10-15: no data2025-10-16: no data2025-10-17: no data2025-10-18: no data2025-10-19: no data2025-10-20: no data2025-10-21: no data2025-10-22: no data2025-10-23: no data2025-10-24: no data2025-10-25: no data2025-10-26: no data2025-10-27: no data2025-10-28: no data2025-10-29: no data2025-10-30: no data2025-10-31: no data2025-11-01: no data2025-11-02: no data2025-11-03: no data2025-11-04: no data2025-11-05: no data2025-11-06: no data2025-11-07: no data2025-11-08: no data2025-11-09: no data2025-11-10: no data2025-11-11: no data2025-11-12: no data2025-11-13: no data2025-11-14: no data2025-11-15: no data2025-11-16: no data2025-11-17: no data2025-11-18: no data2025-11-19: no data2025-11-20: no data2025-11-21: no data2025-11-22: no data2025-11-23: no data2025-11-24: no data2025-11-25: no data2025-11-26: no data2025-11-27: no data2025-11-28: no data2025-11-29: no data2025-11-30: no data2025-12-01: no data2025-12-02: no data2025-12-03: no data2025-12-04: no data2025-12-05: no data2025-12-06: no data2025-12-07: no data2025-12-08: no data2025-12-09: no data2025-12-10: no data2025-12-11: no data2025-12-12: no data2025-12-13: no data2025-12-14: no data2025-12-15: no data2025-12-16: no data2025-12-17: no data2025-12-18: no data2025-12-19: no data2025-12-20: no data2025-12-21: no data2025-12-22: no data2025-12-23: no data2025-12-24: no data2025-12-25: no data2025-12-26: no data2025-12-27: no data2025-12-28: no data2025-12-29: no data2025-12-30: no data2025-12-31: no data2026-01-01: no data2026-01-02: no data2026-01-03: no data2026-01-04: no data2026-01-05: no data2026-01-06: no data2026-01-07: no data2026-01-08: no data2026-01-09: no data2026-01-10: no data2026-01-11: no data2026-01-12: no data2026-01-13: no data2026-01-14: no data2026-01-15: no data2026-01-16: no data2026-01-17: no data2026-01-18: no data2026-01-19: no data2026-01-20: no data2026-01-21: no data2026-01-22: no data2026-01-23: no data2026-01-24: no data2026-01-25: no data2026-01-26: no data2026-01-27: no data2026-01-28: no data2026-01-29: no data2026-01-30: no data2026-01-31: no data2026-02-01: no data2026-02-02: no data2026-02-03: no data2026-02-04: no data2026-02-05: no data2026-02-06: no data2026-02-07: no data2026-02-08: no data2026-02-09: no data2026-02-10: no data2026-02-11: no data2026-02-12: no data2026-02-13: no data2026-02-14: no data2026-02-15: no data2026-02-16: no data2026-02-17: no data2026-02-18: no data2026-02-19: no data2026-02-20: no data2026-02-21: no data2026-02-22: no data2026-02-23: no data2026-02-24: no data2026-02-25: no data2026-02-26: no data2026-02-27: no data2026-02-28: no data2026-03-01: no data2026-03-02: no data2026-03-03: no data2026-03-04: no data2026-03-05: no data2026-03-06: no data2026-03-07: no data2026-03-08: no data2026-03-09: no data2026-03-10: no data2026-03-11: no data2026-03-12: no data2026-03-13: no data2026-03-14: no data2026-03-15: no data2026-03-16: no data2026-03-17: no data2026-03-18: no data2026-03-19: no data2026-03-20: no data2026-03-21: no data2026-03-22: no data2026-03-23: no data2026-03-24: no data2026-03-25: no data2026-03-26: no data2026-03-27: no data2026-03-28: no data2026-03-29: no data2026-03-30: no data2026-03-31: 21.4 µg/m³2026-04-01: 19.8 µg/m³2026-04-02: 27.6 µg/m³2026-04-03: 23.1 µg/m³2026-04-04: 22.0 µg/m³2026-04-05: 23.8 µg/m³2026-04-06: 5.2 µg/m³2026-04-07: 8.3 µg/m³2026-04-08: 26.8 µg/m³2026-04-09: 18.2 µg/m³2026-04-10: 20.0 µg/m³2026-04-11: 15.9 µg/m³2026-04-12: 12.6 µg/m³2026-04-13: 8.2 µg/m³2026-04-14: 17.7 µg/m³2026-04-15: 9.9 µg/m³2026-04-16: 6.9 µg/m³2026-04-17: 4.8 µg/m³2026-04-18: 9.8 µg/m³2026-04-19: 13.7 µg/m³2026-04-20: 10.2 µg/m³2026-04-21: 10.9 µg/m³2026-04-22: 26.2 µg/m³2026-04-23: 23.2 µg/m³2026-04-24: 10.6 µg/m³2026-04-25: 9.2 µg/m³2026-04-26: 15.3 µg/m³2026-04-27: 11.8 µg/m³2026-04-28: 10.5 µg/m³2026-04-29: 8.7 µg/m³2026-04-30: 13.7 µg/m³2026-05-01: 12.2 µg/m³2026-05-02: 10.4 µg/m³2026-05-03: 9.6 µg/m³2026-05-04: 17.8 µg/m³2026-05-05: 28.6 µg/m³2026-05-06: 23.9 µg/m³2026-05-07: 22.0 µg/m³2026-05-08: 4.1 µg/m³2026-05-09: 3.9 µg/m³2026-05-10: 2.8 µg/m³2026-05-11: 11.0 µg/m³2026-05-12: 2.7 µg/m³2026-05-13: 2.8 µg/m³2026-05-14: 3.8 µg/m³2026-05-15: 8.1 µg/m³2026-05-16: 6.2 µg/m³2026-05-17: 9.1 µg/m³2026-05-18: 9.9 µg/m³2026-05-19: 11.4 µg/m³2026-05-20: 7.0 µg/m³2026-05-21: 7.3 µg/m³2026-05-22: 11.1 µg/m³2026-05-23: 20.4 µg/m³2026-05-24: 30.6 µg/m³2026-05-25: 30.7 µg/m³2026-05-26: no data2026-05-27: no data2026-05-28: 12.2 µg/m³2026-05-29: 11.6 µg/m³2026-05-30: 5.7 µg/m³2026-05-31: 13.3 µg/m³2026-06-01: 14.1 µg/m³2026-06-02: 20.7 µg/m³2026-06-03: 19.8 µg/m³2026-06-04: 28.8 µg/m³2026-06-05: 22.3 µg/m³2026-06-06: 9.4 µg/m³2026-06-07: 1.8 µg/m³2026-06-08: 2.9 µg/m³2026-06-09: 8.7 µg/m³2026-06-10: 9.0 µg/m³2026-06-11: 14.5 µg/m³2026-06-12: 21.8 µg/m³2026-06-13: 26.1 µg/m³2026-06-14: 16.4 µg/m³2026-06-15: 12.8 µg/m³2026-06-16: 4.3 µg/m³2026-06-17: 3.9 µg/m³2026-06-18: 8.0 µg/m³2026-06-19: 3.7 µg/m³2026-06-20: 8.2 µg/m³2026-06-21: 6.1 µg/m³2026-06-22: 9.5 µg/m³2026-06-23: 12.5 µg/m³2026-06-24: 12.2 µg/m³2026-06-25: 8.0 µg/m³2026-06-26: 6.7 µg/m³2026-06-27: 2.7 µg/m³2026-06-28: 4.9 µg/m³2026-06-29: 3.7 µg/m³2026-06-30: 6.4 µg/m³2026-07-01: 18.9 µg/m³2026-07-02: 12.8 µg/m³2026-07-03: 30.2 µg/m³2026-07-04: 16.9 µg/m³2026-07-05: 14.4 µg/m³2026-07-06: 12.6 µg/m³2026-07-07: 17.4 µg/m³2026-07-08: 21.4 µg/m³2026-07-09: 24.0 µg/m³2026-07-10: 26.5 µg/m³2026-07-11: 29.5 µg/m³2026-07-12: 32.2 µg/m³2026-07-13: 32.5 µg/m³2026-07-14: 21.8 µg/m³2026-07-15: 18.5 µg/m³2026-07-16: 18.8 µg/m³2026-07-17: 9.9 µg/m³2026-07-18: 10.4 µg/m³2026-07-19: 16.6 µg/m³2026-07-20: 25.0 µg/m³2026-07-21: 24.6 µg/m³2026-07-22: no data2026-07-23: no data2026-07-24: no data2026-07-25: no data2026-07-26: no data2026-07-27: no data2026-07-28: no data2026-07-29: no data2026-07-30: no data2026-07-31: 17.6 µg/m³2026-08-01: 16.0 µg/m³2026-08-02: 16.8 µg/m³2026-08-03: 20.4 µg/m³2026-08-04: 13.4 µg/m³2026-08-05: 15.0 µg/m³2026-08-06: 33.6 µg/m³2026-08-07: 19.5 µg/m³2026-08-08: 24.7 µg/m³2026-08-09: 24.2 µg/m³2026-08-10: 28.7 µg/m³2026-08-11: 27.1 µg/m³2026-08-12: 24.3 µg/m³2026-08-13: 28.6 µg/m³2026-08-14: 30.1 µg/m³2026-08-15: 28.9 µg/m³2026-08-16: 26.0 µg/m³2026-08-17: 24.6 µg/m³2026-08-18: 27.9 µg/m³2026-08-19: no data2026-08-20: no data2026-08-21: no data2026-08-22: no data2026-08-23: no data2026-08-24: no data2026-08-25: 38.2 µg/m³2026-08-26: 20.3 µg/m³2026-08-27: 32.5 µg/m³2026-08-28: 31.0 µg/m³2026-08-29: 37.3 µg/m³2026-08-30: 28.2 µg/m³2026-08-31: 22.4 µg/m³2026-09-01: 34.7 µg/m³2026-09-02: 31.0 µg/m³2026-09-03: 42.4 µg/m³2026-09-04: 65.8 µg/m³2026-09-05: 40.9 µg/m³2026-09-06: 51.6 µg/m³2026-09-07: 28.1 µg/m³2026-09-08: 39.3 µg/m³2026-09-09: 49.4 µg/m³2026-09-10: 49.7 µg/m³2026-09-11: 40.0 µg/m³2026-09-12: 36.2 µg/m³2026-09-13: 41.0 µg/m³2026-09-14: 92.9 µg/m³2026-09-15: 52.0 µg/m³2026-09-16: 36.4 µg/m³2026-09-17: 39.6 µg/m³2026-09-18: 27.9 µg/m³2026-09-19: 74.9 µg/m³2026-09-20: 42.5 µg/m³2026-09-21: 39.9 µg/m³2026-09-22: 24.3 µg/m³2026-09-23: 39.6 µg/m³2026-09-24: 39.9 µg/m³2026-09-25: 39.5 µg/m³2026-09-26: 75.2 µg/m³2026-09-27: 57.5 µg/m³2026-09-28: 81.3 µg/m³2026-09-29: 90.4 µg/m³2026-09-30: 59.0 µg/m³2026-10-01: no data
Good 0–9.0Moderate 9.1+Unhealthy for sensitive groups 35.5+Unhealthy 55.5+Very unhealthy 125.5+Hazardous 225.5+No data

98 of 167 measured days were over the WHO 24-hour guideline.

Daily world rank

#1#2109AprMayJunJulAugSep

Rank on each day's board (1 = most polluted city that day).

2026 against 2025, month by month

15JanFebMarApr 2026: 14.8 µg/m³AprMay 2026: 12.1 µg/m³MayJun 2026: 11.0 µg/m³JunJul 2026: 20.6 µg/m³JulAug 2026: 25.6 µg/m³AugSep 2026: 48.8 µg/m³SepOctNovDec

Faded bars: 2025. A month shows once it has 10 measured days.

Monitors

StationOperatorType
Joo Chiat PlaceCC BY 4.0AirGradientLow-cost
CGBCC BY 4.0AirGradientLow-cost
Marina BayCC BY 4.0AirGradientLow-cost

No reference monitor here, so the value is the median of low-cost sensors (at least two reporting each hour). Low-cost sensors can read high in humid air. Data via OpenAQ; licences as listed. How we rank. Embed this on your site.

Other cities in Singapore

Queenstown Estate 45.5

30-day averages, µg/m³. All of Singapore →

Updated 2026-10-01 16:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.