What is the air quality trend in Nanyō?

Over the past 8 days, Nanyō had an average AQI of 50 based on station measurements. The worst day was 2026-10-15 with AQI 75.

How is Nanyō air quality measured?

Air quality in Nanyō 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 Nanyō, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

148h

PM2.5 Station

148h · 5 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	31	15–42	7.4 µg/m³	12h	3
2026-10-20	45	9–85	11.8 µg/m³	23h	3
2026-10-19	54	25–107	14.9 µg/m³	23h	2
2026-10-18	35	16–137	9.1 µg/m³	23h	3
2026-10-17	49	21–126	13.6 µg/m³	16h	3
2026-10-16	67	30–175	23.3 µg/m³	22h	2
2026-10-15	75	22–147	23.9 µg/m³	21h	3
2026-10-14	50	29–113	13.9 µg/m³	8h	2

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