What is the air quality trend in Rittō?

Over the past 14 days, Rittō had an average AQI of 40 based on station measurements. The worst day was 2026-05-15 with AQI 56.

How is Rittō air quality measured?

Air quality in Rittō 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 Rittō, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

330h

PM2.5 Station

330h · 32 stations

Temperature GFS model

55pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-28	35	20–56	8.5 µg/m³	23h	35
2026-05-27	27	17–38	6.5 µg/m³	24h	39
2026-05-26	31	23–44	7.5 µg/m³	24h	36
2026-05-25	37	26–55	8.8 µg/m³	24h	33
2026-05-24	37	26–54	9.0 µg/m³	24h	36
2026-05-23	35	24–57	8.6 µg/m³	24h	36
2026-05-22	31	19–53	7.5 µg/m³	24h	38
2026-05-21	38	23–66	9.2 µg/m³	24h	36
2026-05-20	36	26–52	8.7 µg/m³	24h	39
2026-05-19	42	32–58	10.3 µg/m³	24h	39
2026-05-18	54	47–81	13.7 µg/m³	24h	36
2026-05-17	52	42–59	12.7 µg/m³	22h	41
2026-05-16	56	52–65	14.3 µg/m³	21h	36
2026-05-15	56	42–137	14.8 µg/m³	24h	30

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