What is the air quality trend in Aizu-Wakamatsu?

Over the past 8 days, Aizu-Wakamatsu had an average AQI of 38 based on station measurements. The worst day was 2026-10-17 with AQI 49.

How is Aizu-Wakamatsu air quality measured?

Air quality in Aizu-Wakamatsu 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 Aizu-Wakamatsu, Japan

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

Historical PM2.5 and AQI trend from monitoring stations near Aizu-Wakamatsu, Japan.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

152h

PM2.5 Station

152h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	43	12–58	11.0 µg/m³	4h	2
2026-10-20	36	13–63	8.9 µg/m³	21h	2
2026-10-19	37	5–58	9.1 µg/m³	22h	2
2026-10-18	34	11–63	8.5 µg/m³	22h	2
2026-10-17	49	25–110	12.9 µg/m³	23h	2
2026-10-16	44	19–84	11.1 µg/m³	22h	2
2026-10-15	31	11–55	7.6 µg/m³	22h	2
2026-10-14	34	15–57	8.2 µg/m³	16h	2

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