What is the air quality trend in Asahikawa?

Over the past 15 days, Asahikawa had an average AQI of 37 based on station measurements. The worst day was 2026-05-18 with AQI 50.

How is Asahikawa air quality measured?

Air quality in Asahikawa 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 Asahikawa, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

233h

PM2.5 Station

233h · 2 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	33	5–70	8.5 µg/m³	11h	1
2026-05-28	38	13–83	9.7 µg/m³	17h	2
2026-05-27	28	5–87	7.1 µg/m³	19h	2
2026-05-26	30	15–54	7.3 µg/m³	13h	2
2026-05-25	29	7–54	7.1 µg/m³	13h	2
2026-05-24	36	9–154	10.7 µg/m³	20h	1
2026-05-23	35	21–77	8.9 µg/m³	13h	1
2026-05-22	31	5–73	7.9 µg/m³	19h	1
2026-05-21	34	5–166	10.6 µg/m³	20h	2
2026-05-20	35	11–94	9.1 µg/m³	18h	3
2026-05-19	40	13–70	10.1 µg/m³	18h	2
2026-05-18	50	21–70	12.8 µg/m³	17h	2
2026-05-17	48	30–61	11.9 µg/m³	15h	2
2026-05-16	46	15–68	11.7 µg/m³	15h	2
2026-05-15	46	25–55	11.3 µg/m³	5h	1

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