What is the air quality trend in Ichihara?

Over the past 7 days, Ichihara had an average AQI of 39 based on station measurements. The worst day was with AQI .

How is Ichihara air quality measured?

Air quality in Ichihara 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 Ichihara, Japan

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

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

Current AQI
Good

48 Hours 7 Days 14 Days 20 Days

PM2.5 Trend

108h · 10 stations

Daily Summary

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-04-10	37	21–61	9.0 µg/m³	18.7	20h	11
2026-04-09	30	13–42	7.2 µg/m³	13.9	18h	11
2026-04-08	34	27–43	8.2 µg/m³	10.2	9h	10
2026-04-07	29	9–63	7.2 µg/m³	11.1	24h	10
2026-04-06	52	41–60	12.9 µg/m³	20.6	18h	12
2026-04-04	40	24–60	10.0 µg/m³	17.1	15h	11
2026-04-03	55	48–72	14.3 µg/m³	18.9	4h	10

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