What is the air quality trend in Yorii?

Over the past 14 days, Yorii had an average AQI of 39 based on station measurements. The worst day was with AQI .

How is Yorii air quality measured?

Air quality in Yorii 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 Yorii, Japan

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

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

Current AQI
Moderate

48 Hours 7 Days 14 Days 20 Days

PM2.5 Trend

255h · 1 station

Daily Summary

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-04-11	60	45–81	16.4 µg/m³	21.5	10h	5
2026-04-10	44	11–117	12.3 µg/m³	17.9	23h	5
2026-04-09	26	13–33	6.3 µg/m³	10.6	17h	5
2026-04-08	35	27–45	8.4 µg/m³	10.3	9h	5
2026-04-07	28	6–63	7.1 µg/m³	11.1	24h	5
2026-04-06	54	42–73	13.8 µg/m³	19.8	18h	5
2026-04-04	37	12–58	9.3 µg/m³	13.6	15h	6
2026-04-03	34	24–72	8.4 µg/m³	12.0	24h	5
2026-04-02	16	1–35	3.8 µg/m³	5.6	23h	4
2026-04-01	15	4–31	3.6 µg/m³	5.8	21h	4
2026-03-31	20	5–39	4.9 µg/m³	8.0	22h	5
2026-03-30	40	12–113	11.8 µg/m³	17.8	11h	4
2026-03-29	72	59–121	22.0 µg/m³	29.5	23h	5
2026-03-28	68	47–119	20.1 µg/m³	26.1	15h	5

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