What is the air quality trend in Saikū?

Over the past 14 days, Saikū had an average AQI of 35 based on station measurements. The worst day was 2026-05-16 with AQI 56.

How is Saikū air quality measured?

Air quality in Saikū 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 Saikū, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

332h

PM2.5 Station

332h · 14 stations

Temperature GFS model

55pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-29	36	28–54	8.8 µg/m³	9.3	23h	11
2026-05-28	31	19–62	7.5 µg/m³	7.6	24h	10
2026-05-27	26	13–42	6.2 µg/m³	8.1	24h	12
2026-05-26	28	15–45	6.7 µg/m³	9.1	24h	11
2026-05-25	32	23–44	7.8 µg/m³	11.2	24h	10
2026-05-24	33	24–49	8.0 µg/m³	12.5	24h	11
2026-05-23	30	20–42	7.1 µg/m³	7.9	24h	12
2026-05-22	28	20–35	6.6 µg/m³	8.5	24h	11
2026-05-21	26	18–43	6.3 µg/m³	10.2	24h	9
2026-05-20	33	18–54	7.9 µg/m³	9.2	24h	12
2026-05-19	42	29–63	10.4 µg/m³	12.3	24h	12
2026-05-18	54	48–59	13.7 µg/m³	20.9	24h	12
2026-05-17	48	39–56	11.7 µg/m³	17.1	23h	12
2026-05-16	56	50–64	14.7 µg/m³	17.7	22h	10

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