What is the air quality trend in Ratchathewi?

Over the past 7 days, Ratchathewi had an average AQI of 22 based on station measurements. The worst day was 2026-05-28 with AQI 31.

How is Ratchathewi air quality measured?

Air quality in Ratchathewi is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Ratchathewi, Thailand

Name: Ratchathewi Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Ratchathewi, Thailand.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

167h

PM2.5 Station

167h · 28 stations

Temperature GFS model

27pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-28	31	13–57	7.6 µg/m³	3.2	24h	25
2026-05-27	14	5–28	3.3 µg/m³	1.9	24h	18
2026-05-26	22	12–55	5.4 µg/m³	2.4	24h	23
2026-05-25	22	9–56	5.3 µg/m³	3.0	24h	21
2026-05-24	17	5–157	5.3 µg/m³	4.5	24h	14
2026-05-23	27	6–55	6.6 µg/m³	4.6	24h	16
2026-05-22	23	5–90	6.0 µg/m³	2.0	23h	20

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