What is the air quality trend in Ōyanomachi-noboritate?

Over the past 8 days, Ōyanomachi-noboritate had an average AQI of 44 based on station measurements. The worst day was 2026-10-14 with AQI 59.

How is Ōyanomachi-noboritate air quality measured?

Air quality in Ōyanomachi-noboritate 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 Ōyanomachi-noboritate, Japan

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

Historical PM2.5 and AQI trend from monitoring stations near Ōyanomachi-noboritate, Japan.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

166h

PM2.5 Station

166h · 31 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	36	27–59	8.8 µg/m³	8h	27
2026-10-20	39	25–71	9.7 µg/m³	24h	22
2026-10-19	42	30–52	10.0 µg/m³	24h	23
2026-10-18	35	22–53	8.4 µg/m³	24h	25
2026-10-17	43	34–56	10.3 µg/m³	24h	22
2026-10-16	57	29–110	15.8 µg/m³	24h	19
2026-10-15	46	29–72	11.6 µg/m³	24h	20
2026-10-14	59	28–213	23.5 µg/m³	14h	18

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