What is the air quality trend in Morioka?

Over the past 8 days, Morioka had an average AQI of 83 based on station measurements. The worst day was 2026-10-15 with AQI 129.

How is Morioka air quality measured?

Air quality in Morioka 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 Morioka, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

132h

PM2.5 Station

132h · 6 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	63	19–232	33.3 µg/m³	7h	4
2026-10-20	57	5–154	17.4 µg/m³	17h	2
2026-10-19	84	17–158	29.5 µg/m³	20h	2
2026-10-18	35	9–77	8.8 µg/m³	15h	2
2026-10-17	113	21–310	55.5 µg/m³	22h	2
2026-10-16	93	27–198	36.7 µg/m³	20h	2
2026-10-15	129	35–346	71.0 µg/m³	22h	3
2026-10-14	95	55–170	37.0 µg/m³	9h	2

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