What is the air quality trend in Omigawa?

Over the past 8 days, Omigawa had an average AQI of 43 based on station measurements. The worst day was 2026-08-29 with AQI 58.

How is Omigawa air quality measured?

Air quality in Omigawa 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 Omigawa, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

165h

PM2.5 Station

165h · 19 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-09-05	29	19–42	6.9 µg/m³	11h	23
2026-09-04	31	17–98	7.9 µg/m³	24h	21
2026-09-03	27	12–67	6.7 µg/m³	24h	18
2026-09-02	53	24–163	16.9 µg/m³	24h	18
2026-09-01	48	26–140	13.2 µg/m³	24h	18
2026-08-31	54	31–106	14.8 µg/m³	24h	15
2026-08-30	47	22–115	12.5 µg/m³	24h	17
2026-08-29	58	30–93	17.0 µg/m³	10h	16

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