What is the air quality trend in Shimotsuke?

Over the past 21 days, Shimotsuke had an average AQI of 32 based on station measurements. The worst day was 2026-05-31 with AQI 45.

How is Shimotsuke air quality measured?

Air quality in Shimotsuke 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 Shimotsuke, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

479h

PM2.5 Station

479h · 20 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-06-09	24	20–29	5.9 µg/m³	4h	22
2026-06-08	29	21–37	6.9 µg/m³	24h	18
2026-06-07	29	16–37	7.0 µg/m³	24h	18
2026-06-06	29	22–38	7.0 µg/m³	24h	18
2026-06-05	29	22–35	7.0 µg/m³	24h	18
2026-06-04	29	20–39	7.0 µg/m³	24h	18
2026-06-03	31	23–46	7.4 µg/m³	24h	18
2026-06-02	30	18–40	7.1 µg/m³	24h	18
2026-06-01	40	24–55	9.7 µg/m³	24h	19
2026-05-31	45	33–81	11.1 µg/m³	24h	19
2026-05-30	38	27–49	9.1 µg/m³	24h	18
2026-05-29	37	26–53	8.8 µg/m³	24h	18
2026-05-28	29	19–44	7.0 µg/m³	24h	18
2026-05-27	35	25–54	8.4 µg/m³	24h	18
2026-05-26	34	24–44	8.3 µg/m³	24h	18
2026-05-25	33	23–52	7.9 µg/m³	24h	19
2026-05-24	36	25–48	8.7 µg/m³	24h	19
2026-05-23	34	25–45	8.3 µg/m³	24h	18
2026-05-22	33	24–45	7.9 µg/m³	24h	18
2026-05-21	34	21–62	8.3 µg/m³	24h	20
2026-05-20	34	25–47	8.2 µg/m³	19h	17

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