What is the air quality trend in Photharam?

Over the past 7 days, Photharam had an average AQI of 63 based on station measurements. The worst day was 2026-07-18 with AQI 77.

How is Photharam air quality measured?

Air quality in Photharam 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 Photharam, Thailand

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

63h

PM2.5 Station

63h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	67	53–107	19.6 µg/m³	6h	2
2026-07-20	71	71–71	21.5 µg/m³	1h	2
2026-07-19	67	52–83	19.8 µg/m³	5h	1
2026-07-18	77	66–100	24.7 µg/m³	6h	2
2026-07-17	69	59–81	20.6 µg/m³	9h	1
2026-07-16	48	23–61	12.3 µg/m³	14h	2
2026-07-15	47	25–67	12.2 µg/m³	22h	1

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