What is the air quality trend in Yokosuka?

Over the past 8 days, Yokosuka had an average AQI of 42 based on station measurements. The worst day was with AQI .

How is Yokosuka air quality measured?

Air quality in Yokosuka 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 Yokosuka, Japan

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

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

Current AQI
Good

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Trend

150h

PM2.5 Trend

150h · 1 station

Daily Summary

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-04-25	37	32–47	8.8 µg/m³	11.6	4h	64
2026-04-24	37	30–47	8.9 µg/m³	12.8	24h	81
2026-04-23	35	24–58	8.5 µg/m³	12.6	24h	74
2026-04-22	48	35–59	11.9 µg/m³	18.9	24h	79
2026-04-21	41	38–46	9.8 µg/m³	12.3	24h	80
2026-04-20	40	8–80	10.0 µg/m³	13.2	18h	63
2026-04-19	48	40–56	11.7 µg/m³	19.4	16h	74
2026-04-18	50	20–106	13.3 µg/m³	14.4	16h	81

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