SmogRank / Thailand / Chon Buri / Ban Talat Bueng

Ban Talat Bueng, month by month

Ban Talat Bueng has a measured daily mean on 643 days since 17 January 2023. Its worst month was February 2025, at 119 US AQI (42.7 µg/m³), 81st of 2,907 cities on that month's world ranking. Its cleanest was June 2024, at 52 US AQI (9.8 µg/m³).

Every month since 2023

202675 so far243 days measured321st of 3,207 in the world
Jan104#137Feb93#238Mar81#449Apr75#366May79#229Jun61#365Jul3 daysAug55#719Sep62#366Oct66#315
2025too few days for a mean (a year needs 256)155 days measured
Jan3 daysFeb119#81Mar97#228Apr72#338May18 daysJun19 daysJulnoneAugnoneSepnoneOct1 dayNov10 daysDec87#344
2024too few days for a mean (a year needs 257)168 days measured
Jan17 daysFeb73#192Mar14 daysApr66#320May63#243Jun52#700Jul10 daysAug16 daysSep3 daysOctnoneNov3 daysDecnone
2023too few days for a mean (a year needs 256)77 days measured
Jan12 daysFeb1 dayMar9 daysApr17 daysMay15 daysJun11 daysJul6 daysAug3 daysSep3 daysOctnoneNovnoneDecnone
Each square is a month's mean PM2.5 in US AQI from Ban Talat Bueng's measured days, with its place on that month's world ranking under it. A month has a mean once 70% of its days are measured, the rule the monthly rankings use; under that, the square gives the days measured. Each square opens that month's ranking with Ban Talat Bueng marked; each year, the year's. A dashed square is the running month, so far.
Good0–50
Moderate51–100
Unhealthy for sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

Months without a mean, and why

29 months
MonthWhy
Jul 20263 of 31 days measured; a month needs 22. The others: 27 with no readings from the monitor, 1 with readings for part of the day (a day needs 18 hours).
Nov 202510 of 30 days measured; a month needs 21. The others: 18 with no readings from the monitor, 2 with readings for part of the day (a day needs 18 hours).
Oct 20251 of 31 days measured; a month needs 22. The others: 28 with no readings from the monitor, 2 with readings for part of the day (a day needs 18 hours).
Sep 2025No day measured. The others: 30 with no readings from the monitor.
Aug 2025No day measured. The others: 31 with no readings from the monitor.
Jul 2025No day measured. The others: 30 with no readings from the monitor, 1 with readings for part of the day (a day needs 18 hours).
Jun 202519 of 30 days measured; a month needs 21. The others: 10 with no readings from the monitor, 1 with readings for part of the day (a day needs 18 hours).
May 202518 of 31 days measured; a month needs 22. The others: 8 with no readings from the monitor, 5 with readings for part of the day (a day needs 18 hours).
Jan 20253 of 31 days measured; a month needs 22. The others: 28 with readings for part of the day (a day needs 18 hours).
Dec 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Nov 20243 of 30 days measured; a month needs 21. The others: 27 with under 18 hours of readings or readings that failed our checks.
Oct 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Sep 20243 of 30 days measured; a month needs 21. The others: 27 with under 18 hours of readings or readings that failed our checks.
Aug 202416 of 31 days measured; a month needs 22. The others: 15 with under 18 hours of readings or readings that failed our checks.
Jul 202410 of 31 days measured; a month needs 22. The others: 21 with under 18 hours of readings or readings that failed our checks.
Mar 202414 of 31 days measured; a month needs 22. The others: 17 with under 18 hours of readings or readings that failed our checks.
Jan 202417 of 31 days measured; a month needs 22. The others: 14 with under 18 hours of readings or readings that failed our checks.
Dec 2023No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Nov 2023No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Oct 2023No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Sep 20233 of 30 days measured; a month needs 21. The others: 27 with under 18 hours of readings or readings that failed our checks.
Aug 20233 of 31 days measured; a month needs 22. The others: 28 with under 18 hours of readings or readings that failed our checks.
Jul 20236 of 31 days measured; a month needs 22. The others: 1 missing from OpenAQ's archive, 24 with under 18 hours of readings or readings that failed our checks.
Jun 202311 of 30 days measured; a month needs 21. The others: 19 with under 18 hours of readings or readings that failed our checks.
May 202315 of 31 days measured; a month needs 22. The others: 16 with under 18 hours of readings or readings that failed our checks.
Apr 202317 of 30 days measured; a month needs 21. The others: 2 missing from OpenAQ's archive, 11 with under 18 hours of readings or readings that failed our checks.
Mar 20239 of 31 days measured; a month needs 22. The others: 19 missing from OpenAQ's archive, 3 with under 18 hours of readings or readings that failed our checks.
Feb 20231 of 28 days measured; a month needs 20. The others: 25 missing from OpenAQ's archive, 2 with under 18 hours of readings or readings that failed our checks.
Jan 202312 of 31 days measured; a month needs 22. The others: 1 missing from OpenAQ's archive, 2 with under 18 hours of readings or readings that failed our checks.

A day counts once 18 hours of it are measured; a month needs 70% of its days.

Ban Talat Bueng's worst months

MonthUS AQIDays measuredWorld rankEpisode
February 2025 11942.7 µg/m³28 of 2881stof 2,907Thailand, 12 to 13 February 2025
Thailand, 1 to 3 February 2025
January 2026 10436.7 µg/m³31 of 31137thof 2,985–
March 2025 9733.8 µg/m³28 of 31228thof 3,149Thailand and Laos, March 2025
February 2026 9331.9 µg/m³23 of 28238thof 3,189–
December 2025 8728.5 µg/m³25 of 31344thof 3,286–
March 2026 8125.0 µg/m³29 of 31449thof 3,292–

Monthly means over the days measured; finished months only. World rank: its place on that month's world ranking of every city with enough days. Each month opens that ranking.

Ban Talat Bueng's worst days

DayUS AQIEpisode
14 May 2026 218143.0 µg/m³–
8 Sept 2026 193116.0 µg/m³–
12 Aug 2026 183101.0 µg/m³–
15 May 2026 17590.0 µg/m³–
13 Feb 2025 17081.9 µg/m³Thailand, 12 to 13 February 2025
24 Jan 2025 16676.2 µg/m³Northern Thailand, January 2025
15 Jan 2026 16068.7 µg/m³–
25 Jan 2025 16068.4 µg/m³Northern Thailand, January 2025
1 Feb 2025 15966.4 µg/m³Thailand, 1 to 3 February 2025
24 Mar 2025 15764.4 µg/m³Thailand and Laos, March 2025

Daily means, the highest since 17 Jan 2023; the WHO's daily guideline is 15 µg/m³. Each date opens that day's world ranking, and each episode the bad-air spell it was part of.

Use this history

SmogRank, PM2.5 monthly and daily means, Ban Talat Bueng, Thailand, 17 Jan 2023 – 13 Oct 2026. Monitor data from Air4Thai via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/th/ban-talat-bueng/history (accessed 14 Oct 2026).

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You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.

Ban Talat Bueng now: the last 24 hours, its ranks today and the last 12 months day by day.

Updated 2026-10-14 06:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some low-cost readings: Sensor.Community, ODbL (data and licence). Some readings: Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Vietnam's government monitors; Aurassure; Umhverfisstofnun (Environment Agency of Iceland); RMCAB (Secretaría Distrital de Ambiente, Bogotá); Love My Air (City and County of Denver), no reuse terms published (why we use them).