What is the air quality trend in Soo?

Over the past 8 days, Soo had an average AQI of 48 based on station measurements. The worst day was 2026-10-19 with AQI 60.

How is Soo air quality measured?

Air quality in Soo 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 Soo, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

166h

PM2.5 Station

166h · 12 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	28	20–42	6.8 µg/m³	9h	12
2026-10-20	43	26–68	10.6 µg/m³	24h	10
2026-10-19	60	28–179	19.5 µg/m³	24h	9
2026-10-18	34	24–48	8.1 µg/m³	24h	11
2026-10-17	51	26–81	13.9 µg/m³	24h	10
2026-10-16	59	9–156	17.3 µg/m³	24h	9
2026-10-15	57	25–140	16.1 µg/m³	24h	10
2026-10-14	56	21–127	16.5 µg/m³	13h	8

Back to Soo Air Quality