What is the air quality trend in Nishiarai?

Over the past 8 days, Nishiarai had an average AQI of 40 based on station measurements. The worst day was with AQI .

How is Nishiarai air quality measured?

Air quality in Nishiarai 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 Nishiarai, Japan

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

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

Current AQI
Good

48 Hours 7 Days 14 Days 20 Days

Air Quality Index Trend

145h

PM2.5 Trend

145h · 1 station

Daily Summary

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-04-13	50	39–56	12.2 µg/m³	16.2	4h	11
2026-04-12	45	35–52	10.9 µg/m³	16.4	24h	17
2026-04-11	46	27–59	11.6 µg/m³	17.0	24h	18
2026-04-10	38	18–58	9.3 µg/m³	16.9	24h	16
2026-04-09	31	13–42	7.3 µg/m³	13.5	18h	16
2026-04-08	35	27–42	8.3 µg/m³	10.0	9h	15
2026-04-07	29	8–63	7.1 µg/m³	11.0	24h	15
2026-04-06	53	42–62	13.3 µg/m³	20.0	18h	17

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