SmogRank / Thailand / Maha Sarakham

Air quality in Maha Sarakham

Maha Sarakham, Thailand. PM2.5 from 1 reference monitor, updated hourly.

19.3µg/m³
Moderate

Latest hour (02:00 UTC), 1.3× the WHO 24-hour guideline.

Rank, worst first

24 hours–not enough data
7 days#1,139of 2,608, at 8.3 µg/m³
30 days#765of 2,627, at 9.2 µg/m³
This year#430of 2,447, at 22.6 µg/m³

Why it ranks here

Cleaner than usual this week. The last 7 days averaged 8.3 µg/m³, well below its typical 21.7; rain or wind often clears the air for a while.
Seasonal. Over the past year its worst months were January, April, averaging up to 39.3 µg/m³ against 8.8 in its cleanest month. Seasonal peaks usually come from heating, crop burning, fire or dust seasons.

Based on Maha Sarakham's own measurements; causes are the usual kinds for a pattern like this, not a confirmed source.

The last 12 months, day by day

1102031Nov 2025DecJan 2026FebMarAprMayJunJulAugSepOct2025-11-01: 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: 19.6 µg/m³2025-11-20: 19.5 µg/m³2025-11-21: 22.8 µg/m³2025-11-22: 25.3 µg/m³2025-11-23: 28.4 µg/m³2025-11-24: 26.3 µg/m³2025-11-25: 31.2 µg/m³2025-11-26: 39.1 µg/m³2025-11-27: 36.3 µg/m³2025-11-28: 33.5 µg/m³2025-11-29: 44.3 µg/m³2025-11-30: 51.3 µg/m³2025-12-01: 52.4 µg/m³2025-12-02: 39.7 µg/m³2025-12-03: 29.6 µg/m³2025-12-04: 23.0 µg/m³2025-12-05: 22.6 µg/m³2025-12-06: 22.8 µg/m³2025-12-07: 25.4 µg/m³2025-12-08: 30.4 µg/m³2025-12-09: 42.8 µg/m³2025-12-10: 37.9 µg/m³2025-12-11: 36.9 µg/m³2025-12-12: 28.2 µg/m³2025-12-13: 22.1 µg/m³2025-12-14: 21.9 µg/m³2025-12-15: 20.1 µg/m³2025-12-16: 28.7 µg/m³2025-12-17: 22.3 µg/m³2025-12-18: 18.7 µg/m³2025-12-19: 33.4 µg/m³2025-12-20: 43.8 µg/m³2025-12-21: 32.0 µg/m³2025-12-22: 32.4 µg/m³2025-12-23: 35.5 µg/m³2025-12-24: 27.6 µg/m³2025-12-25: 32.5 µg/m³2025-12-26: 21.2 µg/m³2025-12-27: 27.2 µg/m³2025-12-28: 31.5 µg/m³2025-12-29: 29.5 µg/m³2025-12-30: 42.6 µg/m³2025-12-31: 42.0 µg/m³2026-01-01: 54.3 µg/m³2026-01-02: 30.7 µg/m³2026-01-03: 18.7 µg/m³2026-01-04: 18.5 µg/m³2026-01-05: 28.8 µg/m³2026-01-06: 23.0 µg/m³2026-01-07: 18.6 µg/m³2026-01-08: 23.4 µg/m³2026-01-09: 31.3 µg/m³2026-01-10: 33.8 µg/m³2026-01-11: 32.6 µg/m³2026-01-12: 37.6 µg/m³2026-01-13: 48.2 µg/m³2026-01-14: 50.6 µg/m³2026-01-15: 54.1 µg/m³2026-01-16: 53.4 µg/m³2026-01-17: 55.9 µg/m³2026-01-18: 56.0 µg/m³2026-01-19: 57.7 µg/m³2026-01-20: 48.3 µg/m³2026-01-21: 38.6 µg/m³2026-01-22: 22.5 µg/m³2026-01-23: 16.3 µg/m³2026-01-24: 16.2 µg/m³2026-01-25: 26.9 µg/m³2026-01-26: 35.8 µg/m³2026-01-27: 27.2 µg/m³2026-01-28: 24.4 µg/m³2026-01-29: 29.0 µg/m³2026-01-30: 41.6 µg/m³2026-01-31: 43.2 µg/m³2026-02-01: 27.4 µg/m³2026-02-02: 21.6 µg/m³2026-02-03: 15.0 µg/m³2026-02-04: 21.7 µg/m³2026-02-05: 31.5 µg/m³2026-02-06: 34.8 µg/m³2026-02-07: 40.5 µg/m³2026-02-08: 29.9 µg/m³2026-02-09: 18.6 µg/m³2026-02-10: 21.7 µg/m³2026-02-11: 25.8 µg/m³2026-02-12: 24.3 µg/m³2026-02-13: 33.5 µg/m³2026-02-14: 35.0 µg/m³2026-02-15: 34.5 µg/m³2026-02-16: 43.2 µg/m³2026-02-17: 30.5 µg/m³2026-02-18: 16.0 µg/m³2026-02-19: 14.0 µg/m³2026-02-20: 15.4 µg/m³2026-02-21: 16.9 µg/m³2026-02-22: 30.3 µg/m³2026-02-23: 38.8 µg/m³2026-02-24: 43.8 µg/m³2026-02-25: 25.9 µg/m³2026-02-26: 28.2 µg/m³2026-02-27: 24.6 µg/m³2026-02-28: 22.5 µg/m³2026-03-01: 18.6 µg/m³2026-03-02: 24.6 µg/m³2026-03-03: 35.5 µg/m³2026-03-04: 35.8 µg/m³2026-03-05: 21.0 µg/m³2026-03-06: 16.4 µg/m³2026-03-07: 15.0 µg/m³2026-03-08: 21.4 µg/m³2026-03-09: 27.9 µg/m³2026-03-10: 18.1 µg/m³2026-03-11: 19.2 µg/m³2026-03-12: 19.6 µg/m³2026-03-13: 21.1 µg/m³2026-03-14: 21.1 µg/m³2026-03-15: 18.8 µg/m³2026-03-16: 22.3 µg/m³2026-03-17: 30.0 µg/m³2026-03-18: 36.6 µg/m³2026-03-19: 36.9 µg/m³2026-03-20: 32.4 µg/m³2026-03-21: 32.1 µg/m³2026-03-22: 40.5 µg/m³2026-03-23: 39.4 µg/m³2026-03-24: 43.5 µg/m³2026-03-25: 38.4 µg/m³2026-03-26: 46.9 µg/m³2026-03-27: 49.5 µg/m³2026-03-28: 46.2 µg/m³2026-03-29: 46.9 µg/m³2026-03-30: 43.3 µg/m³2026-03-31: 34.5 µg/m³2026-04-01: 41.3 µg/m³2026-04-02: 47.6 µg/m³2026-04-03: 43.3 µg/m³2026-04-04: 46.2 µg/m³2026-04-05: 58.5 µg/m³2026-04-06: 47.8 µg/m³2026-04-07: 46.7 µg/m³2026-04-08: 54.8 µg/m³2026-04-09: 44.7 µg/m³2026-04-10: 43.7 µg/m³2026-04-11: no data2026-04-12: 51.0 µg/m³2026-04-13: 47.0 µg/m³2026-04-14: 37.0 µg/m³2026-04-15: 36.4 µg/m³2026-04-16: 37.4 µg/m³2026-04-17: 41.9 µg/m³2026-04-18: 31.8 µg/m³2026-04-19: 39.7 µg/m³2026-04-20: 29.5 µg/m³2026-04-21: 30.5 µg/m³2026-04-22: 35.0 µg/m³2026-04-23: 39.0 µg/m³2026-04-24: 35.5 µg/m³2026-04-25: 17.4 µg/m³2026-04-26: 26.7 µg/m³2026-04-27: 36.0 µg/m³2026-04-28: 37.6 µg/m³2026-04-29: 23.6 µg/m³2026-04-30: 31.6 µg/m³2026-05-01: 20.6 µg/m³2026-05-02: 18.4 µg/m³2026-05-03: 23.4 µg/m³2026-05-04: 23.0 µg/m³2026-05-05: 28.1 µg/m³2026-05-06: 28.0 µg/m³2026-05-07: 38.7 µg/m³2026-05-08: 30.7 µg/m³2026-05-09: 22.3 µg/m³2026-05-10: 24.9 µg/m³2026-05-11: 25.1 µg/m³2026-05-12: 32.8 µg/m³2026-05-13: 22.2 µg/m³2026-05-14: 17.1 µg/m³2026-05-15: 14.6 µg/m³2026-05-16: 14.3 µg/m³2026-05-17: 15.6 µg/m³2026-05-18: 21.0 µg/m³2026-05-19: 13.4 µg/m³2026-05-20: 9.4 µg/m³2026-05-21: 12.3 µg/m³2026-05-22: 17.7 µg/m³2026-05-23: 16.3 µg/m³2026-05-24: 17.8 µg/m³2026-05-25: 16.0 µg/m³2026-05-26: 12.7 µg/m³2026-05-27: 12.7 µg/m³2026-05-28: 15.7 µg/m³2026-05-29: 13.4 µg/m³2026-05-30: 15.0 µg/m³2026-05-31: 15.8 µg/m³2026-06-01: 16.6 µg/m³2026-06-02: 15.5 µg/m³2026-06-03: 15.9 µg/m³2026-06-04: 15.0 µg/m³2026-06-05: 11.5 µg/m³2026-06-06: 11.8 µg/m³2026-06-07: 10.3 µg/m³2026-06-08: 10.3 µg/m³2026-06-09: 11.0 µg/m³2026-06-10: 13.3 µg/m³2026-06-11: 8.8 µg/m³2026-06-12: 7.8 µg/m³2026-06-13: no data2026-06-14: 12.3 µg/m³2026-06-15: 10.1 µg/m³2026-06-16: 9.5 µg/m³2026-06-17: 11.1 µg/m³2026-06-18: 11.0 µg/m³2026-06-19: 10.6 µg/m³2026-06-20: 14.6 µg/m³2026-06-21: 11.2 µg/m³2026-06-22: 12.6 µg/m³2026-06-23: 15.5 µg/m³2026-06-24: 17.6 µg/m³2026-06-25: 11.1 µg/m³2026-06-26: 9.4 µg/m³2026-06-27: 10.0 µg/m³2026-06-28: 9.9 µg/m³2026-06-29: 10.2 µg/m³2026-06-30: 11.3 µg/m³2026-07-01: 9.0 µg/m³2026-07-02: no data2026-07-03: no data2026-07-04: no data2026-07-05: no data2026-07-06: no data2026-07-07: no data2026-07-08: no data2026-07-09: no data2026-07-10: no data2026-07-11: no data2026-07-12: no data2026-07-13: no data2026-07-14: no data2026-07-15: no data2026-07-16: no data2026-07-17: no data2026-07-18: no data2026-07-19: no data2026-07-20: no data2026-07-21: no data2026-07-22: 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: 12.5 µg/m³2026-07-31: 8.4 µg/m³2026-08-01: 5.5 µg/m³2026-08-02: 5.8 µg/m³2026-08-03: 8.7 µg/m³2026-08-04: 6.6 µg/m³2026-08-05: 9.9 µg/m³2026-08-06: 7.8 µg/m³2026-08-07: 4.5 µg/m³2026-08-08: 6.2 µg/m³2026-08-09: 8.2 µg/m³2026-08-10: 8.6 µg/m³2026-08-11: 8.4 µg/m³2026-08-12: 9.9 µg/m³2026-08-13: 10.1 µg/m³2026-08-14: 8.8 µg/m³2026-08-15: 8.8 µg/m³2026-08-16: 11.4 µg/m³2026-08-17: 12.3 µg/m³2026-08-18: 11.7 µg/m³2026-08-19: 11.5 µg/m³2026-08-20: 6.3 µg/m³2026-08-21: 6.1 µg/m³2026-08-22: 6.7 µg/m³2026-08-23: 6.2 µg/m³2026-08-24: 9.2 µg/m³2026-08-25: 11.4 µg/m³2026-08-26: 11.0 µg/m³2026-08-27: 9.8 µg/m³2026-08-28: 10.0 µg/m³2026-08-29: 10.3 µg/m³2026-08-30: 11.0 µg/m³2026-08-31: 9.3 µg/m³2026-09-01: 7.0 µg/m³2026-09-02: 9.3 µg/m³2026-09-03: 8.9 µg/m³2026-09-04: 11.6 µg/m³2026-09-05: 8.5 µg/m³2026-09-06: 8.2 µg/m³2026-09-07: 9.3 µg/m³2026-09-08: 7.7 µg/m³2026-09-09: 9.3 µg/m³2026-09-10: 8.7 µg/m³2026-09-11: 9.7 µg/m³2026-09-12: 13.7 µg/m³2026-09-13: 18.6 µg/m³2026-09-14: 12.9 µg/m³2026-09-15: 7.9 µg/m³2026-09-16: 6.7 µg/m³2026-09-17: no data2026-09-18: no data2026-09-19: 6.8 µg/m³2026-09-20: 5.4 µg/m³2026-09-21: 4.6 µg/m³2026-09-22: 10.8 µg/m³2026-09-23: 12.6 µg/m³2026-09-24: 8.2 µg/m³2026-09-25: 4.6 µg/m³2026-09-26: 4.9 µg/m³2026-09-27: 5.1 µg/m³2026-09-28: 6.2 µg/m³2026-09-29: 8.2 µg/m³2026-09-30: 11.6 µg/m³2026-10-01: 17.5 µg/m³
192 of 294 measured days were over the WHO 24-hour guideline (15 µg/m³). One row per month, one square per local day.
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

PM2.5 in µg/m³, coloured by the US EPA's PM2.5 categories. Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

Last 4 days, hour by hour

15302026-10-02 00:00 UTC: 18.1 µg/m³2026-10-02 01:00 UTC: 18.6 µg/m³2026-10-02 02:00 UTC: 19.3 µg/m³Sep 29Sep 30Oct 1
Times in UTC. Dashed line: WHO 24-hour guideline (15 µg/m³).

Where it stood each day

Top 10Top 100#1#10#100#1,000#2,835NovDecJanFebMarAprMayJunJulAugSep#576
Its rank on each day's world board, #1 being the most polluted city that day. The scale is logarithmic: each step down is ten times as many cities. See it among every city.

2026 against 2025, month by month

15Jan 2026: 35.4 µg/m³JanFeb 2025: 27.2 µg/m³Feb 2026: 27.4 µg/m³FebMar 2025: 38.6 µg/m³Mar 2026: 30.8 µg/m³MarApr 2025: 32.1 µg/m³Apr 2026: 39.3 µg/m³AprMay 2025: 12.0 µg/m³May 2026: 19.6 µg/m³MayJun 2025: 13.7 µg/m³Jun 2026: 11.9 µg/m³JunJulAug 2026: 8.8 µg/m³AugSep 2025: 13.9 µg/m³Sep 2026: 8.8 µg/m³SepOct 2025: 14.2 µg/m³OctNov 2025: 31.5 µg/m³NovDec 2025: 30.9 µg/m³Dec
Faded bars: 2025. A month shows once it has 10 measured days.

This week against past years

This weekThis week: 8.3 µg/m³8.320252025: 13.2 µg/m³13.2
Mean PM2.5 for 25 Sept to 1 Oct in each year. Dashed line: WHO 24-hour guideline.

Monitors

StationOperatorType
Pramuan Suk Health ParkPermission requested (Thailand PCD, Air4Thai, 2026-10-01)Air4ThaiReference

The city's value is the median of its reference monitors each hour, when at least a third of them report (three are always enough); low-cost sensors are listed but not counted when reference monitors exist. Data via OpenAQ; licences as listed. How we rank. Embed this on your site.

Use this page

SmogRank, PM2.5 daily means, Maha Sarakham, Thailand, 2 Oct 2025 – 1 Oct 2026, smogrank.com/th/maha-sarakham (accessed 2 Oct 2026).

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Other cities in Thailand

30-day averages, µg/m³. All of Thailand.

Updated 2026-10-02 03:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors in µg/m³.