What is the air quality trend in Noboribetsu?

Over the past 8 days, Noboribetsu had an average AQI of 51 based on station measurements. The worst day was 2026-10-19 with AQI 71.

How is Noboribetsu air quality measured?

Air quality in Noboribetsu 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 Noboribetsu, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

156h

PM2.5 Station

156h · 4 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	21–44	8.2 µg/m³	8h	3
2026-10-20	41	17–82	10.8 µg/m³	23h	3
2026-10-19	71	17–475	35.1 µg/m³	23h	2
2026-10-18	33	16–66	8.0 µg/m³	24h	3
2026-10-17	49	15–153	13.5 µg/m³	23h	2
2026-10-16	70	14–179	24.6 µg/m³	23h	2
2026-10-15	68	17–159	22.2 µg/m³	21h	2
2026-10-14	42	21–87	11.6 µg/m³	11h	2

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