What is the air quality trend in Ōkawara?

Over the past 8 days, Ōkawara had an average AQI of 40 based on station measurements. The worst day was 2026-08-01 with AQI 47.

How is Ōkawara air quality measured?

Air quality in Ōkawara 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 Ōkawara, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

162h

PM2.5 Station

162h · 12 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-08-08	38	38–38	9.1 µg/m³	1h	12
2026-08-07	30	20–45	7.2 µg/m³	21h	14
2026-08-06	44	14–109	11.9 µg/m³	24h	7
2026-08-05	46	15–174	13.8 µg/m³	24h	6
2026-08-04	40	28–55	9.7 µg/m³	24h	10
2026-08-03	41	24–56	9.9 µg/m³	24h	13
2026-08-02	37	18–55	8.9 µg/m³	24h	10
2026-08-01	47	35–59	11.5 µg/m³	20h	11

Back to Ōkawara Air Quality