What is the air quality trend in Shiogama?

Over the past 3 days, Shiogama had an average AQI of 50 based on station measurements. The worst day was 2026-07-20 with AQI 51.

How is Shiogama air quality measured?

Air quality in Shiogama 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 Shiogama, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

45h

PM2.5 Station

45h · 1 station

Temperature GFS model

8pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	49	15–61	12.8 µg/m³	7h	7
2026-07-21	50	20–68	12.8 µg/m³	22h	5
2026-07-20	51	30–64	12.9 µg/m³	16h	5

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