SmogRank / Thailand / Yasothon

Air quality in Yasothon

Yasothon, Thailand. PM2.5 from 1 reference monitor, updated hourly.

2AQHI+
Low risk

Latest hour (02:00 UTC), 1.0× the WHO 24-hour guideline. PM2.5 15.1 µg/m³.

Rank, worst first

24 hours–not enough data
7 days#1,116of 2,608, at 1 AQHI+ (8.4 µg/m³)
30 days#872of 2,627, at 1 AQHI+ (8.4 µg/m³)
This year#496of 2,447, at 2 AQHI+ (19.2 µg/m³)

Why it ranks here

Cleaner than usual this week. The last 7 days averaged 8.4 µg/m³, well below its typical 18.6; rain or wind often clears the air for a while.
Seasonal. Over the past year its worst months were January, March, April, December, averaging up to 33.5 µg/m³ against 8.3 in its cleanest month. Seasonal peaks usually come from heating, crop burning, fire or dust seasons.

Based on Yasothon'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: 18.2 µg/m³2025-11-20: 16.6 µg/m³2025-11-21: 25.3 µg/m³2025-11-22: 28.8 µg/m³2025-11-23: 30.9 µg/m³2025-11-24: 29.4 µg/m³2025-11-25: 37.7 µg/m³2025-11-26: 39.1 µg/m³2025-11-27: 40.7 µg/m³2025-11-28: 36.1 µg/m³2025-11-29: 41.1 µg/m³2025-11-30: 41.9 µg/m³2025-12-01: 39.2 µg/m³2025-12-02: 25.9 µg/m³2025-12-03: 29.1 µg/m³2025-12-04: 24.3 µg/m³2025-12-05: 22.3 µg/m³2025-12-06: 18.8 µg/m³2025-12-07: 23.5 µg/m³2025-12-08: 28.8 µg/m³2025-12-09: 40.7 µg/m³2025-12-10: 34.7 µg/m³2025-12-11: 31.2 µg/m³2025-12-12: no data2025-12-13: no data2025-12-14: 19.8 µg/m³2025-12-15: 18.6 µg/m³2025-12-16: 20.4 µg/m³2025-12-17: 18.9 µg/m³2025-12-18: 21.0 µg/m³2025-12-19: 31.2 µg/m³2025-12-20: 38.2 µg/m³2025-12-21: 30.7 µg/m³2025-12-22: 23.7 µg/m³2025-12-23: 25.9 µg/m³2025-12-24: 24.9 µg/m³2025-12-25: 29.9 µg/m³2025-12-26: 20.4 µg/m³2025-12-27: 26.2 µg/m³2025-12-28: 30.5 µg/m³2025-12-29: 30.9 µg/m³2025-12-30: 37.4 µg/m³2025-12-31: 38.2 µg/m³2026-01-01: 44.9 µg/m³2026-01-02: 32.3 µg/m³2026-01-03: 29.2 µg/m³2026-01-04: 27.9 µg/m³2026-01-05: 29.7 µg/m³2026-01-06: 27.3 µg/m³2026-01-07: 26.6 µg/m³2026-01-08: 33.2 µg/m³2026-01-09: 37.4 µg/m³2026-01-10: 20.3 µg/m³2026-01-11: 17.0 µg/m³2026-01-12: 22.6 µg/m³2026-01-13: 37.6 µg/m³2026-01-14: 29.0 µg/m³2026-01-15: 37.9 µg/m³2026-01-16: 35.7 µg/m³2026-01-17: 40.7 µg/m³2026-01-18: 39.0 µg/m³2026-01-19: 33.4 µg/m³2026-01-20: 35.6 µg/m³2026-01-21: 25.4 µg/m³2026-01-22: 14.0 µg/m³2026-01-23: 9.0 µg/m³2026-01-24: 8.8 µg/m³2026-01-25: 17.5 µg/m³2026-01-26: 28.2 µg/m³2026-01-27: 15.4 µg/m³2026-01-28: 12.9 µg/m³2026-01-29: 15.5 µg/m³2026-01-30: 29.4 µg/m³2026-01-31: 28.1 µg/m³2026-02-01: 15.7 µg/m³2026-02-02: 13.0 µg/m³2026-02-03: 6.9 µg/m³2026-02-04: 14.1 µg/m³2026-02-05: 26.0 µg/m³2026-02-06: 32.8 µg/m³2026-02-07: 35.5 µg/m³2026-02-08: 20.0 µg/m³2026-02-09: 10.2 µg/m³2026-02-10: 11.2 µg/m³2026-02-11: 17.9 µg/m³2026-02-12: 17.2 µg/m³2026-02-13: 28.2 µg/m³2026-02-14: 25.6 µg/m³2026-02-15: 25.3 µg/m³2026-02-16: 33.4 µg/m³2026-02-17: 19.5 µg/m³2026-02-18: 10.8 µg/m³2026-02-19: 7.5 µg/m³2026-02-20: 7.0 µg/m³2026-02-21: 10.2 µg/m³2026-02-22: 30.9 µg/m³2026-02-23: 35.9 µg/m³2026-02-24: 42.8 µg/m³2026-02-25: 25.9 µg/m³2026-02-26: 26.2 µg/m³2026-02-27: 26.2 µg/m³2026-02-28: 21.8 µg/m³2026-03-01: 19.9 µg/m³2026-03-02: 19.0 µg/m³2026-03-03: 28.2 µg/m³2026-03-04: 24.9 µg/m³2026-03-05: 12.0 µg/m³2026-03-06: 8.5 µg/m³2026-03-07: 7.2 µg/m³2026-03-08: 17.0 µg/m³2026-03-09: 19.3 µg/m³2026-03-10: 8.2 µg/m³2026-03-11: 8.7 µg/m³2026-03-12: 11.2 µg/m³2026-03-13: 11.5 µg/m³2026-03-14: 12.1 µg/m³2026-03-15: 12.1 µg/m³2026-03-16: 16.1 µg/m³2026-03-17: 24.5 µg/m³2026-03-18: 36.1 µg/m³2026-03-19: 39.9 µg/m³2026-03-20: 40.6 µg/m³2026-03-21: no data2026-03-22: 43.1 µg/m³2026-03-23: 50.8 µg/m³2026-03-24: 42.3 µg/m³2026-03-25: 47.4 µg/m³2026-03-26: 47.7 µg/m³2026-03-27: 46.4 µg/m³2026-03-28: 50.3 µg/m³2026-03-29: 44.8 µg/m³2026-03-30: 36.0 µg/m³2026-03-31: 26.4 µg/m³2026-04-01: 33.6 µg/m³2026-04-02: 45.3 µg/m³2026-04-03: 47.5 µg/m³2026-04-04: 37.6 µg/m³2026-04-05: 35.3 µg/m³2026-04-06: 35.6 µg/m³2026-04-07: 35.8 µg/m³2026-04-08: 41.1 µg/m³2026-04-09: 36.7 µg/m³2026-04-10: 41.0 µg/m³2026-04-11: 38.4 µg/m³2026-04-12: 36.6 µg/m³2026-04-13: 33.1 µg/m³2026-04-14: 41.2 µg/m³2026-04-15: 35.1 µg/m³2026-04-16: 33.2 µg/m³2026-04-17: 42.5 µg/m³2026-04-18: 31.7 µg/m³2026-04-19: 33.6 µg/m³2026-04-20: 26.8 µg/m³2026-04-21: 27.0 µg/m³2026-04-22: 29.8 µg/m³2026-04-23: 36.1 µg/m³2026-04-24: 34.0 µg/m³2026-04-25: 18.6 µg/m³2026-04-26: 31.7 µg/m³2026-04-27: 25.8 µg/m³2026-04-28: 26.1 µg/m³2026-04-29: 15.6 µg/m³2026-04-30: 20.0 µg/m³2026-05-01: 17.2 µg/m³2026-05-02: 20.3 µg/m³2026-05-03: 41.8 µg/m³2026-05-04: 25.5 µg/m³2026-05-05: 15.8 µg/m³2026-05-06: 17.0 µg/m³2026-05-07: 58.9 µg/m³2026-05-08: 31.7 µg/m³2026-05-09: 16.9 µg/m³2026-05-10: 18.1 µg/m³2026-05-11: 22.7 µg/m³2026-05-12: 29.2 µg/m³2026-05-13: 20.0 µg/m³2026-05-14: 22.5 µg/m³2026-05-15: 9.5 µg/m³2026-05-16: 9.9 µg/m³2026-05-17: 10.5 µg/m³2026-05-18: 10.3 µg/m³2026-05-19: 5.6 µg/m³2026-05-20: 4.4 µg/m³2026-05-21: 7.3 µg/m³2026-05-22: 11.5 µg/m³2026-05-23: 13.5 µg/m³2026-05-24: 13.4 µg/m³2026-05-25: 17.5 µg/m³2026-05-26: 10.5 µg/m³2026-05-27: 11.5 µg/m³2026-05-28: 20.2 µg/m³2026-05-29: 14.9 µg/m³2026-05-30: 10.4 µg/m³2026-05-31: 9.4 µg/m³2026-06-01: 14.2 µg/m³2026-06-02: 15.7 µg/m³2026-06-03: 11.4 µg/m³2026-06-04: 10.3 µg/m³2026-06-05: 7.2 µg/m³2026-06-06: 7.1 µg/m³2026-06-07: 6.4 µg/m³2026-06-08: 4.3 µg/m³2026-06-09: 6.4 µg/m³2026-06-10: 7.5 µg/m³2026-06-11: 4.0 µg/m³2026-06-12: 4.6 µg/m³2026-06-13: no data2026-06-14: 10.8 µg/m³2026-06-15: 8.7 µg/m³2026-06-16: 11.2 µg/m³2026-06-17: 9.7 µg/m³2026-06-18: 6.4 µg/m³2026-06-19: 6.7 µg/m³2026-06-20: 9.4 µg/m³2026-06-21: 10.7 µg/m³2026-06-22: 10.8 µg/m³2026-06-23: 11.5 µg/m³2026-06-24: 16.8 µg/m³2026-06-25: 12.4 µg/m³2026-06-26: 9.0 µg/m³2026-06-27: 10.2 µg/m³2026-06-28: 8.0 µg/m³2026-06-29: 6.8 µg/m³2026-06-30: 6.6 µg/m³2026-07-01: 7.4 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: 8.9 µg/m³2026-07-31: 7.6 µg/m³2026-08-01: 6.7 µg/m³2026-08-02: 7.3 µg/m³2026-08-03: 8.1 µg/m³2026-08-04: 8.9 µg/m³2026-08-05: 10.0 µg/m³2026-08-06: 8.8 µg/m³2026-08-07: 6.4 µg/m³2026-08-08: 7.7 µg/m³2026-08-09: 9.6 µg/m³2026-08-10: 9.1 µg/m³2026-08-11: 7.7 µg/m³2026-08-12: 11.3 µg/m³2026-08-13: 13.2 µg/m³2026-08-14: 12.0 µg/m³2026-08-15: 11.8 µg/m³2026-08-16: 11.4 µg/m³2026-08-17: 13.4 µg/m³2026-08-18: 13.4 µg/m³2026-08-19: 11.6 µg/m³2026-08-20: 7.9 µg/m³2026-08-21: 7.8 µg/m³2026-08-22: 9.4 µg/m³2026-08-23: 7.4 µg/m³2026-08-24: 8.9 µg/m³2026-08-25: 13.0 µg/m³2026-08-26: 12.8 µg/m³2026-08-27: 8.3 µg/m³2026-08-28: 7.7 µg/m³2026-08-29: 10.6 µg/m³2026-08-30: 10.2 µg/m³2026-08-31: 9.9 µg/m³2026-09-01: 7.1 µg/m³2026-09-02: 11.5 µg/m³2026-09-03: no data2026-09-04: 14.6 µg/m³2026-09-05: 10.4 µg/m³2026-09-06: 7.2 µg/m³2026-09-07: 7.3 µg/m³2026-09-08: 6.5 µg/m³2026-09-09: 6.5 µg/m³2026-09-10: 7.9 µg/m³2026-09-11: 11.3 µg/m³2026-09-12: 13.9 µg/m³2026-09-13: 17.4 µg/m³2026-09-14: no data2026-09-15: no data2026-09-16: 4.9 µg/m³2026-09-17: 6.9 µg/m³2026-09-18: 3.7 µg/m³2026-09-19: 6.1 µg/m³2026-09-20: 4.4 µg/m³2026-09-21: 4.0 µg/m³2026-09-22: 6.9 µg/m³2026-09-23: 9.9 µg/m³2026-09-24: 6.4 µg/m³2026-09-25: 4.5 µg/m³2026-09-26: 4.8 µg/m³2026-09-27: 5.5 µg/m³2026-09-28: 7.9 µg/m³2026-09-29: 11.7 µg/m³2026-09-30: 13.6 µg/m³2026-10-01: 10.8 µg/m³
165 of 291 measured days were over the WHO 24-hour guideline (15 µg/m³). One row per month, one square per local day.
Low risk1–3
Moderate risk4–6
High risk7–10
Very high risk10+

Canada's AQHI+ for PM2.5 (1 point per 10 µg/m³), which is defined on hourly values. 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: 14.5 µg/m³2026-10-02 01:00 UTC: 14.8 µg/m³2026-10-02 02:00 UTC: 15.1 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#385
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: 27.1 µg/m³JanFeb 2025: 38.1 µg/m³Feb 2026: 21.3 µg/m³FebMar 2025: 47.8 µg/m³Mar 2026: 27.1 µg/m³MarApr 2025: 46.9 µg/m³Apr 2026: 33.5 µg/m³AprMay 2025: 26.8 µg/m³May 2026: 17.7 µg/m³MayJun 2025: 21.1 µg/m³Jun 2026: 9.1 µg/m³JunJulAug 2026: 9.8 µg/m³AugSep 2025: 12.9 µg/m³Sep 2026: 8.3 µg/m³SepOct 2025: 19.8 µg/m³OctNov 2025: 32.2 µg/m³NovDec 2025: 27.8 µg/m³Dec
Faded bars: 2025. A month shows once it has 10 measured days.

This week against past years

This weekThis week: 8.4 µg/m³8.420252025: 13.8 µg/m³13.8
Mean PM2.5 for 25 Sept to 1 Oct in each year. Dashed line: WHO 24-hour guideline.

Monitors

StationOperatorType
Phaya Thaen Public 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, Yasothon, Thailand, 2 Oct 2025 – 1 Oct 2026, smogrank.com/th/yasothon (accessed 2 Oct 2026).

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Other cities in Thailand

30-day averages, AQHI+. All of Thailand.

Updated 2026-10-02 03:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the Canada AQHI+ PM2.5 sub-index.