What is the air quality trend in Nishiwaki?

Over the past 8 days, Nishiwaki had an average AQI of 53 based on station measurements. The worst day was 2026-10-15 with AQI 66.

How is Nishiwaki air quality measured?

Air quality in Nishiwaki 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 Nishiwaki, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

166h

PM2.5 Station

166h · 50 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	34	27–42	8.2 µg/m³	10h	49
2026-10-20	49	28–95	13.0 µg/m³	24h	44
2026-10-19	54	33–86	14.7 µg/m³	24h	41
2026-10-18	38	25–53	9.0 µg/m³	24h	47
2026-10-17	54	35–87	14.5 µg/m³	24h	42
2026-10-16	66	43–135	19.4 µg/m³	24h	37
2026-10-15	66	38–113	19.6 µg/m³	24h	40
2026-10-14	64	29–92	19.2 µg/m³	12h	36

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