SmogRank / Thailand / Kamphaeng Phet / Kamphaeng Phet

Kamphaeng Phet, month by month

Kamphaeng Phet has a measured daily mean on 706 days since 1 January 2023. Its worst month was April 2026, at 153 US AQI (58.0 µg/m³), 50th of 2,941 cities on that month's world ranking. Its cleanest was September 2025, at 31 US AQI (5.5 µg/m³).

Every month since 2023

202680 so far255 days measured272nd of 2,791 in the world
Jan92#165Feb93#233Mar113#146Apr153#50May58#523Jun41#1,293Jul3 daysAug51#1,098Sep55#543Oct58#330
2025too few days for a mean (a year needs 256)217 days measured
Jan3 daysFeb98#168Mar117#131Apr77#267May20 daysJun44#1,854JulnoneAug6 daysSep31#2,344Oct10 daysNov12 daysDec75#438
2024too few days for a mean (a year needs 257)166 days measured
Jan21 daysFeb13 daysMar12 daysApr150#24May81#89Jun49#1,002Jul17 daysAug19 daysSep5 daysOct1 dayNov3 daysDecnone
2023too few days for a mean (a year needs 256)68 days measured
Jan18 daysFeb2 daysMar9 daysApr16 daysMay14 daysJun6 daysJul1 dayAug1 daySep1 dayOctnoneNovnoneDecnone
Each square is a month's mean PM2.5 in US AQI from Kamphaeng Phet'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 Kamphaeng Phet marked; each year, the year's. A dashed square is the running month, so far.
Good0–50
Moderate51–100
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

28 months
MonthWhy
Jul 20263 of 31 days measured; a month needs 22. The others: 28 with under 18 hours of readings or readings that failed our checks.
Nov 202512 of 30 days measured; a month needs 21. The others: 18 with under 18 hours of readings or readings that failed our checks.
Oct 202510 of 31 days measured; a month needs 22. The others: 21 with under 18 hours of readings or readings that failed our checks.
Aug 20256 of 31 days measured; a month needs 22. The others: 25 with under 18 hours of readings or readings that failed our checks.
Jul 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
May 202520 of 31 days measured; a month needs 22. The others: 11 with under 18 hours of readings or readings that failed our checks.
Jan 20253 of 31 days measured; a month needs 22. The others: 28 with under 18 hours of readings or readings that failed our checks.
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 20241 of 31 days measured; a month needs 22. The others: 30 with under 18 hours of readings or readings that failed our checks.
Sep 20245 of 30 days measured; a month needs 21. The others: 25 with under 18 hours of readings or readings that failed our checks.
Aug 202419 of 31 days measured; a month needs 22. The others: 12 with under 18 hours of readings or readings that failed our checks.
Jul 202417 of 31 days measured; a month needs 22. The others: 14 with under 18 hours of readings or readings that failed our checks.
Mar 202412 of 31 days measured; a month needs 22. The others: 19 with under 18 hours of readings or readings that failed our checks.
Feb 202413 of 29 days measured; a month needs 21. The others: 1 missing from OpenAQ's archive, 15 with under 18 hours of readings or readings that failed our checks.
Jan 202421 of 31 days measured; a month needs 22. The others: 10 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 20231 of 30 days measured; a month needs 21. The others: 29 with under 18 hours of readings or readings that failed our checks.
Aug 20231 of 31 days measured; a month needs 22. The others: 30 with under 18 hours of readings or readings that failed our checks.
Jul 20231 of 31 days measured; a month needs 22. The others: 1 missing from OpenAQ's archive, 29 with under 18 hours of readings or readings that failed our checks.
Jun 20236 of 30 days measured; a month needs 21. The others: 24 with under 18 hours of readings or readings that failed our checks.
May 202314 of 31 days measured; a month needs 22. The others: 17 with under 18 hours of readings or readings that failed our checks.
Apr 202316 of 30 days measured; a month needs 21. The others: 2 missing from OpenAQ's archive, 12 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 20232 of 28 days measured; a month needs 20. The others: 25 missing from OpenAQ's archive, 1 with under 18 hours of readings or readings that failed our checks.
Jan 202318 of 31 days measured; a month needs 22. The others: 7 missing from OpenAQ's archive, 6 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.

Kamphaeng Phet's worst months

MonthUS AQIDays measuredWorld rankEpisode
April 2026 15358.0 µg/m³30 of 3050thof 2,941–
April 2024 15055.2 µg/m³28 of 3024thof 2,520Thailand and Laos, April and May 2024
March 2025 11742.1 µg/m³27 of 31131stof 2,862–
March 2026 11340.3 µg/m³30 of 31146thof 2,971–
February 2025 9834.1 µg/m³26 of 28168thof 2,633–
February 2026 9331.8 µg/m³28 of 28233rdof 2,866–

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.

Kamphaeng Phet's worst days

DayUS AQIEpisode
15 Feb 2023 17691.2 µg/m³North-western Thailand and Laos, February 2023
27 Mar 2023 17589.3 µg/m³–
2 Apr 2026 17184.7 µg/m³–
12 Apr 2023 17082.7 µg/m³–
13 Apr 2026 17082.6 µg/m³–
17 Apr 2023 16981.8 µg/m³–
16 Apr 2023 16980.8 µg/m³–
25 Mar 2025 16980.8 µg/m³–
26 Mar 2023 16778.9 µg/m³–
8 Apr 2023 16778.8 µg/m³–

Daily means, the highest since 1 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, Kamphaeng Phet, Thailand, 1 Jan 2023 – 12 Oct 2026. Monitor data from Air4Thai via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/th/kamphaeng-phet/history (accessed 12 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.

Kamphaeng Phet now: the last 24 hours, its ranks today and the last 12 months day by day.

Updated 2026-10-12 20:07 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).