SmogRank / Thailand / Kalasin

Air quality in Kalasin

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

33India AQI
Good

Latest hour (02:00 UTC), 1.4× the WHO 24-hour guideline. PM2.5 20.4 µg/m³.

Rank, worst first

24 hours–not enough data
7 days#835of 2,608, at 17 India AQI (9.6 µg/m³)
30 days#648of 2,627, at 18 India AQI (10.6 µg/m³)
This year#383of 2,447, at 42 India AQI (24.9 µg/m³)

Why it ranks here

Cleaner than usual this week. The last 7 days averaged 9.6 µg/m³, well below its typical 22.6; rain or wind often clears the air for a while.
Seasonal. Over the past year its worst months were January, April, averaging up to 42.6 µg/m³ against 10.2 in its cleanest month. Seasonal peaks usually come from heating, crop burning, fire or dust seasons.

Based on Kalasin'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: 22.0 µg/m³2025-11-20: 17.6 µg/m³2025-11-21: 25.4 µg/m³2025-11-22: 29.2 µg/m³2025-11-23: 30.6 µg/m³2025-11-24: 28.7 µg/m³2025-11-25: 35.3 µg/m³2025-11-26: 39.6 µg/m³2025-11-27: 37.7 µg/m³2025-11-28: 37.9 µg/m³2025-11-29: 42.2 µg/m³2025-11-30: 51.5 µg/m³2025-12-01: 53.1 µg/m³2025-12-02: 41.9 µg/m³2025-12-03: 35.2 µg/m³2025-12-04: 25.8 µg/m³2025-12-05: 24.9 µg/m³2025-12-06: 22.6 µg/m³2025-12-07: 27.1 µg/m³2025-12-08: 30.2 µg/m³2025-12-09: 39.7 µg/m³2025-12-10: 36.8 µg/m³2025-12-11: 35.7 µg/m³2025-12-12: 24.9 µg/m³2025-12-13: 23.0 µg/m³2025-12-14: 20.4 µg/m³2025-12-15: 17.5 µg/m³2025-12-16: 21.9 µg/m³2025-12-17: 18.4 µg/m³2025-12-18: 21.8 µg/m³2025-12-19: 36.8 µg/m³2025-12-20: 45.7 µg/m³2025-12-21: 29.2 µg/m³2025-12-22: 24.3 µg/m³2025-12-23: 25.7 µg/m³2025-12-24: 25.7 µg/m³2025-12-25: 31.5 µg/m³2025-12-26: 18.6 µg/m³2025-12-27: 25.5 µg/m³2025-12-28: 29.0 µg/m³2025-12-29: 32.0 µg/m³2025-12-30: 40.1 µg/m³2025-12-31: 43.4 µg/m³2026-01-01: 55.4 µg/m³2026-01-02: 30.2 µg/m³2026-01-03: 21.1 µg/m³2026-01-04: 21.3 µg/m³2026-01-05: 28.0 µg/m³2026-01-06: 25.0 µg/m³2026-01-07: 23.4 µg/m³2026-01-08: 28.8 µg/m³2026-01-09: 35.7 µg/m³2026-01-10: 38.3 µg/m³2026-01-11: 37.9 µg/m³2026-01-12: 42.1 µg/m³2026-01-13: 52.0 µg/m³2026-01-14: 50.3 µg/m³2026-01-15: 63.0 µg/m³2026-01-16: 60.2 µg/m³2026-01-17: 65.3 µg/m³2026-01-18: 61.8 µg/m³2026-01-19: 63.0 µg/m³2026-01-20: 56.1 µg/m³2026-01-21: 41.0 µg/m³2026-01-22: 28.4 µg/m³2026-01-23: 22.4 µg/m³2026-01-24: 22.1 µg/m³2026-01-25: 30.5 µg/m³2026-01-26: 42.1 µg/m³2026-01-27: 31.9 µg/m³2026-01-28: 27.9 µg/m³2026-01-29: 31.9 µg/m³2026-01-30: 44.7 µg/m³2026-01-31: 45.1 µg/m³2026-02-01: 31.0 µg/m³2026-02-02: 26.1 µg/m³2026-02-03: 23.0 µg/m³2026-02-04: 30.1 µg/m³2026-02-05: 41.8 µg/m³2026-02-06: 48.5 µg/m³2026-02-07: 46.0 µg/m³2026-02-08: 34.5 µg/m³2026-02-09: 24.1 µg/m³2026-02-10: 27.4 µg/m³2026-02-11: 33.0 µg/m³2026-02-12: 30.5 µg/m³2026-02-13: 40.8 µg/m³2026-02-14: 42.5 µg/m³2026-02-15: 44.5 µg/m³2026-02-16: 48.1 µg/m³2026-02-17: 35.2 µg/m³2026-02-18: 23.7 µg/m³2026-02-19: 21.7 µg/m³2026-02-20: 22.5 µg/m³2026-02-21: 21.6 µg/m³2026-02-22: no data2026-02-23: no data2026-02-24: 28.5 µg/m³2026-02-25: 25.7 µg/m³2026-02-26: 27.0 µg/m³2026-02-27: 28.3 µg/m³2026-02-28: 26.7 µg/m³2026-03-01: 26.0 µg/m³2026-03-02: 28.0 µg/m³2026-03-03: 41.1 µg/m³2026-03-04: 41.7 µg/m³2026-03-05: 19.9 µg/m³2026-03-06: 14.0 µg/m³2026-03-07: 13.6 µg/m³2026-03-08: 21.4 µg/m³2026-03-09: 26.4 µg/m³2026-03-10: 17.2 µg/m³2026-03-11: 19.5 µg/m³2026-03-12: 18.2 µg/m³2026-03-13: 21.6 µg/m³2026-03-14: 20.1 µg/m³2026-03-15: 19.7 µg/m³2026-03-16: 23.1 µg/m³2026-03-17: 28.2 µg/m³2026-03-18: 37.6 µg/m³2026-03-19: 37.6 µg/m³2026-03-20: 36.9 µg/m³2026-03-21: 34.3 µg/m³2026-03-22: 44.7 µg/m³2026-03-23: 39.8 µg/m³2026-03-24: 43.8 µg/m³2026-03-25: 38.7 µg/m³2026-03-26: 47.0 µg/m³2026-03-27: 49.7 µg/m³2026-03-28: 47.9 µg/m³2026-03-29: 46.5 µg/m³2026-03-30: 43.4 µg/m³2026-03-31: 35.4 µg/m³2026-04-01: 42.1 µg/m³2026-04-02: 51.8 µg/m³2026-04-03: 47.7 µg/m³2026-04-04: 50.4 µg/m³2026-04-05: 60.3 µg/m³2026-04-06: 50.6 µg/m³2026-04-07: 47.8 µg/m³2026-04-08: 54.0 µg/m³2026-04-09: 48.7 µg/m³2026-04-10: 51.6 µg/m³2026-04-11: 58.8 µg/m³2026-04-12: 60.3 µg/m³2026-04-13: 51.1 µg/m³2026-04-14: 45.2 µg/m³2026-04-15: 46.8 µg/m³2026-04-16: 45.2 µg/m³2026-04-17: 46.6 µg/m³2026-04-18: 38.8 µg/m³2026-04-19: 42.0 µg/m³2026-04-20: 31.4 µg/m³2026-04-21: 34.5 µg/m³2026-04-22: 41.0 µg/m³2026-04-23: 45.3 µg/m³2026-04-24: 37.1 µg/m³2026-04-25: 17.0 µg/m³2026-04-26: 25.0 µg/m³2026-04-27: 31.0 µg/m³2026-04-28: 28.1 µg/m³2026-04-29: 23.0 µg/m³2026-04-30: 26.0 µg/m³2026-05-01: 17.6 µg/m³2026-05-02: 19.5 µg/m³2026-05-03: 37.0 µg/m³2026-05-04: 22.9 µg/m³2026-05-05: 20.9 µg/m³2026-05-06: 28.4 µg/m³2026-05-07: 53.6 µg/m³2026-05-08: 31.4 µg/m³2026-05-09: 14.3 µg/m³2026-05-10: 23.2 µg/m³2026-05-11: 24.3 µg/m³2026-05-12: 39.6 µg/m³2026-05-13: 22.0 µg/m³2026-05-14: 19.8 µg/m³2026-05-15: 16.4 µg/m³2026-05-16: 12.3 µg/m³2026-05-17: 12.5 µg/m³2026-05-18: 14.9 µg/m³2026-05-19: 11.3 µg/m³2026-05-20: 8.8 µg/m³2026-05-21: 12.6 µg/m³2026-05-22: 20.4 µg/m³2026-05-23: 21.0 µg/m³2026-05-24: no data2026-05-25: no data2026-05-26: 14.9 µg/m³2026-05-27: 13.1 µg/m³2026-05-28: 17.9 µg/m³2026-05-29: 12.8 µg/m³2026-05-30: 12.1 µg/m³2026-05-31: 18.2 µg/m³2026-06-01: 19.4 µg/m³2026-06-02: 19.0 µg/m³2026-06-03: 18.2 µg/m³2026-06-04: 13.5 µg/m³2026-06-05: 10.8 µg/m³2026-06-06: 9.2 µg/m³2026-06-07: 10.1 µg/m³2026-06-08: 10.1 µg/m³2026-06-09: 11.3 µg/m³2026-06-10: 12.6 µg/m³2026-06-11: 8.6 µg/m³2026-06-12: 7.2 µg/m³2026-06-13: no data2026-06-14: 11.6 µg/m³2026-06-15: 9.8 µg/m³2026-06-16: 12.5 µg/m³2026-06-17: 12.8 µg/m³2026-06-18: 12.4 µg/m³2026-06-19: 11.4 µg/m³2026-06-20: 14.8 µg/m³2026-06-21: 13.3 µg/m³2026-06-22: 15.8 µg/m³2026-06-23: 17.9 µg/m³2026-06-24: 22.1 µg/m³2026-06-25: 14.5 µg/m³2026-06-26: 11.7 µg/m³2026-06-27: 12.0 µg/m³2026-06-28: 12.3 µg/m³2026-06-29: 12.5 µg/m³2026-06-30: 13.4 µg/m³2026-07-01: 10.4 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: 12.6 µg/m³2026-07-31: 10.4 µg/m³2026-08-01: 9.2 µg/m³2026-08-02: 10.5 µg/m³2026-08-03: 13.9 µg/m³2026-08-04: 12.1 µg/m³2026-08-05: 15.2 µg/m³2026-08-06: 12.3 µg/m³2026-08-07: 9.0 µg/m³2026-08-08: 10.4 µg/m³2026-08-09: 10.6 µg/m³2026-08-10: 11.4 µg/m³2026-08-11: 12.1 µg/m³2026-08-12: 10.2 µg/m³2026-08-13: 12.6 µg/m³2026-08-14: 11.6 µg/m³2026-08-15: 12.6 µg/m³2026-08-16: 12.7 µg/m³2026-08-17: 13.6 µg/m³2026-08-18: 12.2 µg/m³2026-08-19: 11.6 µg/m³2026-08-20: 8.3 µg/m³2026-08-21: 6.3 µg/m³2026-08-22: 9.2 µg/m³2026-08-23: 7.8 µg/m³2026-08-24: 10.1 µg/m³2026-08-25: 12.5 µg/m³2026-08-26: 12.5 µg/m³2026-08-27: 11.3 µg/m³2026-08-28: 12.6 µg/m³2026-08-29: 11.5 µg/m³2026-08-30: 10.9 µg/m³2026-08-31: 11.1 µg/m³2026-09-01: 8.2 µg/m³2026-09-02: 12.1 µg/m³2026-09-03: 10.3 µg/m³2026-09-04: 13.0 µg/m³2026-09-05: 10.1 µg/m³2026-09-06: 9.4 µg/m³2026-09-07: 10.8 µg/m³2026-09-08: 9.2 µg/m³2026-09-09: 9.4 µg/m³2026-09-10: 8.4 µg/m³2026-09-11: 10.4 µg/m³2026-09-12: 14.9 µg/m³2026-09-13: 19.7 µg/m³2026-09-14: 13.8 µg/m³2026-09-15: 9.4 µg/m³2026-09-16: 9.3 µg/m³2026-09-17: 9.2 µg/m³2026-09-18: 8.0 µg/m³2026-09-19: 8.5 µg/m³2026-09-20: 8.6 µg/m³2026-09-21: 7.3 µg/m³2026-09-22: 12.4 µg/m³2026-09-23: 16.1 µg/m³2026-09-24: 9.9 µg/m³2026-09-25: 5.0 µg/m³2026-09-26: 6.2 µg/m³2026-09-27: 5.9 µg/m³2026-09-28: 6.1 µg/m³2026-09-29: 8.3 µg/m³2026-09-30: 15.1 µg/m³2026-10-01: 20.8 µg/m³
197 of 293 measured days were over the WHO 24-hour guideline (15 µg/m³). One row per month, one square per local day.
Good0–50
Satisfactory51–100
Moderate101–200
Poor201–300
Very poor301–400
Severe401+

India's National Air Quality Index (CPCB), PM2.5 sub-index. 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: 20.3 µg/m³2026-10-02 01:00 UTC: 20.2 µg/m³2026-10-02 02:00 UTC: 20.4 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#278
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: 39.6 µg/m³JanFeb 2025: 35.4 µg/m³Feb 2026: 32.0 µg/m³FebMar 2025: 45.9 µg/m³Mar 2026: 31.7 µg/m³MarApr 2025: 40.7 µg/m³Apr 2026: 42.6 µg/m³AprMay 2025: 21.1 µg/m³May 2026: 20.5 µg/m³MayJun 2025: 15.9 µg/m³Jun 2026: 13.1 µg/m³JunJulAug 2026: 11.2 µg/m³AugSep 2025: 14.3 µg/m³Sep 2026: 10.2 µg/m³SepOct 2025: 18.0 µg/m³OctNov 2025: 33.1 µg/m³NovDec 2025: 29.9 µg/m³Dec
Faded bars: 2025. A month shows once it has 10 measured days.

This week against past years

This weekThis week: 9.6 µg/m³9.620252025: 13.6 µg/m³13.6
Mean PM2.5 for 25 Sept to 1 Oct in each year. Dashed line: WHO 24-hour guideline.

Monitors

StationOperatorType
KAENG DON KLANG 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, Kalasin, Thailand, 2 Oct 2025 – 1 Oct 2026, smogrank.com/th/kalasin (accessed 2 Oct 2026).

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Other cities in Thailand

30-day averages, India AQI. 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 India AQI PM2.5 sub-index.