What is the air quality trend in Jōyō?

Over the past 8 days, Jōyō had an average AQI of 62 based on station measurements. The worst day was 2026-10-15 with AQI 85.

How is Jōyō air quality measured?

Air quality in Jōyō 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 Jōyō, Japan

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

166h

PM2.5 Station

166h · 64 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	41	33–67	10.4 µg/m³	7h	68
2026-10-20	50	33–72	12.9 µg/m³	24h	65
2026-10-19	60	40–81	16.5 µg/m³	24h	60
2026-10-18	42	28–75	10.5 µg/m³	24h	67
2026-10-17	62	38–100	17.9 µg/m³	24h	63
2026-10-16	76	45–154	23.8 µg/m³	24h	51
2026-10-15	85	48–154	28.0 µg/m³	24h	65
2026-10-14	84	31–154	28.1 µg/m³	15h	52

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