What is the air quality trend in Asahi?

Over the past 7 days, Asahi had an average AQI of 32 based on station measurements. The worst day was 2026-05-25 with AQI 41.

How is Asahi air quality measured?

Air quality in Asahi 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 Asahi, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

167h

PM2.5 Station

167h · 13 stations

Temperature GFS model

27pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-28	36	19–58	8.8 µg/m³	24h	18
2026-05-27	27	21–43	6.5 µg/m³	24h	24
2026-05-26	30	16–41	7.2 µg/m³	24h	21
2026-05-25	41	25–162	11.4 µg/m³	24h	20
2026-05-24	32	24–50	7.7 µg/m³	24h	21
2026-05-23	30	21–41	7.1 µg/m³	24h	24
2026-05-22	30	20–42	7.1 µg/m³	23h	20

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