What is the air quality trend in Tsubame?

Over the past 14 days, Tsubame had an average AQI of 43 based on station measurements. The worst day was 2026-07-16 with AQI 57.

How is Tsubame air quality measured?

Air quality in Tsubame 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 Tsubame, Japan

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

315h

PM2.5 Station

315h · 4 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	53	33–80	14.0 µg/m³	18h	3
2026-07-20	51	30–78	13.3 µg/m³	24h	3
2026-07-19	44	12–93	11.9 µg/m³	24h	3
2026-07-18	40	15–66	10.1 µg/m³	22h	3
2026-07-17	49	30–71	12.5 µg/m³	23h	2
2026-07-16	57	25–91	15.9 µg/m³	23h	3
2026-07-15	50	26–69	13.0 µg/m³	24h	3
2026-07-14	46	15–57	11.3 µg/m³	20h	3
2026-07-13	42	12–66	10.7 µg/m³	24h	3
2026-07-12	39	6–61	9.6 µg/m³	23h	3
2026-07-11	34	17–55	8.2 µg/m³	24h	3
2026-07-10	34	13–61	8.4 µg/m³	22h	3
2026-07-09	36	17–64	8.8 µg/m³	23h	3
2026-07-08	34	17–58	8.1 µg/m³	21h	4

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