What is the air quality trend in Kasuga?

Over the past 14 days, Kasuga had an average AQI of 37 based on station measurements. The worst day was 2026-05-16 with AQI 54.

How is Kasuga air quality measured?

Air quality in Kasuga 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 Kasuga, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

330h

PM2.5 Station

330h · 31 stations

Temperature GFS model

55pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-28	30	16–40	7.3 µg/m³	23h	27
2026-05-27	24	17–29	5.7 µg/m³	24h	29
2026-05-26	28	18–41	6.8 µg/m³	24h	29
2026-05-25	31	21–41	7.6 µg/m³	24h	29
2026-05-24	30	23–37	7.2 µg/m³	24h	27
2026-05-23	33	23–44	7.9 µg/m³	24h	32
2026-05-22	26	18–38	6.2 µg/m³	24h	28
2026-05-21	32	23–42	7.6 µg/m³	24h	24
2026-05-20	35	24–46	8.4 µg/m³	24h	31
2026-05-19	42	30–56	10.1 µg/m³	24h	28
2026-05-18	54	50–59	13.5 µg/m³	24h	31
2026-05-17	46	10–53	11.1 µg/m³	23h	28
2026-05-16	54	40–59	14.0 µg/m³	21h	27
2026-05-15	53	41–71	13.4 µg/m³	23h	26

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