What is the air quality trend in Osaka?

Over the past 8 days, Osaka had an average AQI of 36 based on station measurements. The worst day was 2026-05-25 with AQI 43.

How is Osaka air quality measured?

Air quality in Osaka 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 Osaka, Japan

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

Historical PM2.5 and AQI trend from monitoring stations near Osaka, Japan.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

169h

PM2.5 Station

169h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	40	29–54	9.7 µg/m³	15h	62
2026-05-28	36	24–56	8.6 µg/m³	24h	69
2026-05-27	30	19–46	7.1 µg/m³	24h	76
2026-05-26	32	24–42	7.7 µg/m³	24h	72
2026-05-25	43	28–153	11.5 µg/m³	24h	67
2026-05-24	37	27–63	9.1 µg/m³	24h	70
2026-05-23	35	28–49	8.4 µg/m³	24h	73
2026-05-22	42	24–123	11.6 µg/m³	10h	61

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