What is the air quality trend in Shikokuchūō?

Over the past 8 days, Shikokuchūō had an average AQI of 47 based on station measurements. The worst day was 2026-10-14 with AQI 67.

How is Shikokuchūō air quality measured?

Air quality in Shikokuchūō 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 Shikokuchūō, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

166h

PM2.5 Station

166h · 7 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	28	17–36	6.8 µg/m³	11h	11
2026-10-20	49	28–155	13.5 µg/m³	24h	11
2026-10-19	43	26–67	10.8 µg/m³	24h	11
2026-10-18	36	21–54	8.5 µg/m³	24h	11
2026-10-17	43	27–73	10.7 µg/m³	24h	10
2026-10-16	60	33–144	17.2 µg/m³	24h	8
2026-10-15	54	24–157	15.4 µg/m³	24h	10
2026-10-14	67	23–152	20.9 µg/m³	11h	10

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