What is the air quality trend in Tachikawa?

Over the past 5 days, Tachikawa had an average AQI of 83 based on station measurements. The worst day was 2026-07-16 with AQI 104.

How is Tachikawa air quality measured?

Air quality in Tachikawa 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 Tachikawa, Japan

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

33h

PM2.5 Station

33h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-07-21	83	79–87	27.3 µg/m³	28.9	4h	1
2026-07-20	71	71–71	21.6 µg/m³	23.9	1h	1
2026-07-17	85	59–97	28.2 µg/m³	30.3	7h	1
2026-07-16	104	53–136	36.4 µg/m³	44.1	17h	1
2026-07-15	72	35–98	23.0 µg/m³	31.1	4h	1

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