SmogRank / Thailand / Saraburi / Saraburi

Saraburi, month by month

Saraburi has a measured daily mean on 701 days since 1 January 2023. Its worst month was January 2026, at 107 US AQI (37.8 µg/m³), 103rd of 2,617 cities on that month's world ranking. Its cleanest was June 2026, at 53 US AQI (10.1 µg/m³).

Every month since 2023

202672 so far238 days measured351st of 2,791 in the world
Jan107#103Feb87#282Mar81#419Apr87#252May66#349Jun53#648Jul3 daysAug55#637Sep55#543Oct65#156
2025too few days for a mean (a year needs 256)185 days measured
Jan5 daysFeb99#156Mar89#301Apr69#405May16 daysJun53#1,216JulnoneAug6 daysSep54#611Oct2 daysNov2 daysDec82#359
2024too few days for a mean (a year needs 257)190 days measured
Jan106#76Feb99#82Mar19 daysApr89#79May71#157Jun59#264Jul19 daysAug16 daysSep5 daysOct2 daysNov3 daysDecnone
2023too few days for a mean (a year needs 256)88 days measured
Jan88#71Feb2 daysMar9 daysApr17 daysMay15 daysJun11 daysJul5 daysAug3 daysSep3 daysOctnoneNovnoneDecnone
Each square is a month's mean PM2.5 in US AQI from Saraburi'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 Saraburi 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

25 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 20252 of 30 days measured; a month needs 21. The others: 28 with under 18 hours of readings or readings that failed our checks.
Oct 20252 of 31 days measured; a month needs 22. The others: 29 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 202516 of 31 days measured; a month needs 22. The others: 15 with under 18 hours of readings or readings that failed our checks.
Jan 20255 of 31 days measured; a month needs 22. The others: 26 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 20242 of 31 days measured; a month needs 22. The others: 29 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 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 202419 of 31 days measured; a month needs 22. The others: 12 with under 18 hours of readings or readings that failed our checks.
Mar 202419 of 31 days measured; a month needs 22. The others: 12 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 20235 of 31 days measured; a month needs 22. The others: 1 missing from OpenAQ's archive, 25 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 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.

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

Saraburi's worst months

MonthUS AQIDays measuredWorld rankEpisode
January 2026 10737.8 µg/m³29 of 31103rdof 2,617–
January 2024 10637.6 µg/m³22 of 3176thof 2,385–
February 2025 9935.0 µg/m³28 of 28156thof 2,633–
February 2024 9934.8 µg/m³23 of 2982ndof 2,486Thailand, February 2024
April 2024 8929.6 µg/m³27 of 3079thof 2,520–
March 2025 8929.6 µg/m³27 of 31301stof 2,862Thailand and Laos, March 2025

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.

Saraburi's worst days

DayUS AQIEpisode
24 Jan 2025 16980.5 µg/m³Northern Thailand, January 2025
15 Feb 2024 16677.3 µg/m³Thailand, February 2024
16 Feb 2024 16068.5 µg/m³Thailand, February 2024
25 Jan 2025 16068.1 µg/m³Northern Thailand, January 2025
24 Mar 2025 15866.1 µg/m³Thailand and Laos, March 2025
14 Feb 2024 15864.9 µg/m³Thailand, February 2024
16 Jan 2026 15460.1 µg/m³–
23 Mar 2025 15256.3 µg/m³Thailand and Laos, March 2025
1 Feb 2023 15155.8 µg/m³–
15 Jan 2026 14453.1 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, Saraburi, Thailand, 1 Jan 2023 – 12 Oct 2026. Monitor data from Air4Thai via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/th/saraburi/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.

Saraburi 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).