What is the air quality trend in Asso?

Over the past 15 days, Asso had an average AQI of 42 based on station measurements. The worst day was 2026-07-21 with AQI 55.

How is Asso air quality measured?

Air quality in Asso 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 Asso, Japan

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

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

Current AQI
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

275h

PM2.5 Station

275h · 3 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	43	13–87	12.4 µg/m³	4h	2
2026-07-21	55	27–82	15.2 µg/m³	13h	2
2026-07-20	49	27–71	12.8 µg/m³	20h	2
2026-07-19	50	16–157	14.3 µg/m³	19h	2
2026-07-18	50	10–101	14.3 µg/m³	21h	2
2026-07-17	45	17–66	11.3 µg/m³	20h	2
2026-07-16	53	28–79	14.4 µg/m³	20h	2
2026-07-15	53	14–78	14.2 µg/m³	20h	2
2026-07-14	45	17–63	11.5 µg/m³	21h	2
2026-07-13	44	6–79	11.5 µg/m³	21h	2
2026-07-12	33	5–55	8.0 µg/m³	19h	2
2026-07-11	28	9–53	6.7 µg/m³	22h	2
2026-07-10	27	9–61	6.5 µg/m³	19h	2
2026-07-09	28	9–42	6.7 µg/m³	19h	2
2026-07-08	28	13–48	6.7 µg/m³	17h	2

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