What is the air quality trend in Yōkaichiba?

Over the past 15 days, Yōkaichiba had an average AQI of 52 based on station measurements. The worst day was 2026-10-14 with AQI 73.

How is Yōkaichiba air quality measured?

Air quality in Yōkaichiba 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 Yōkaichiba, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

333h

PM2.5 Station

333h · 19 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	34	25–70	8.5 µg/m³	15h	22
2026-10-20	43	25–88	10.8 µg/m³	24h	21
2026-10-19	57	32–156	16.2 µg/m³	24h	20
2026-10-18	33	24–57	8.0 µg/m³	24h	23
2026-10-17	48	34–79	12.1 µg/m³	24h	18
2026-10-16	61	29–118	17.7 µg/m³	24h	16
2026-10-15	58	29–171	18.2 µg/m³	24h	18
2026-10-14	73	28–161	23.6 µg/m³	24h	16
2026-10-13	67	30–165	20.9 µg/m³	24h	16
2026-10-12	57	36–123	15.4 µg/m³	24h	17
2026-10-11	69	44–163	21.2 µg/m³	24h	16
2026-10-10	50	25–82	13.0 µg/m³	24h	18
2026-10-09	58	26–104	16.5 µg/m³	24h	18
2026-10-08	36	25–48	8.7 µg/m³	24h	29
2026-10-07	46	35–63	11.4 µg/m³	6h	26

Back to Yōkaichiba Air Quality