What is the air quality trend in Omigawa?

Over the past 15 days, Omigawa had an average AQI of 47 based on station measurements. The worst day was 2026-08-31 with AQI 59.

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

333h

PM2.5 Station

333h · 12 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-09-05	31	23–36	7.5 µg/m³	13h	18
2026-09-04	42	18–96	11.8 µg/m³	24h	18
2026-09-03	48	15–152	13.7 µg/m³	24h	16
2026-09-02	52	22–119	15.3 µg/m³	24h	18
2026-09-01	57	28–157	16.8 µg/m³	24h	17
2026-08-31	59	30–125	16.6 µg/m³	24h	17
2026-08-30	49	22–133	13.5 µg/m³	24h	17
2026-08-29	54	25–106	15.5 µg/m³	24h	18
2026-08-28	50	27–89	13.7 µg/m³	24h	17
2026-08-27	35	17–72	8.9 µg/m³	24h	18
2026-08-26	42	22–102	11.1 µg/m³	24h	18
2026-08-25	43	23–110	11.3 µg/m³	24h	17
2026-08-24	50	30–117	13.0 µg/m³	24h	18
2026-08-23	47	38–71	11.9 µg/m³	24h	17
2026-08-22	46	26–75	12.3 µg/m³	8h	16

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