What is the air quality trend in Rittō?

Over the past 8 days, Rittō had an average AQI of 63 based on station measurements. The worst day was 2026-10-15 with AQI 88.

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

166h

PM2.5 Station

166h · 37 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	45	35–81	11.8 µg/m³	7h	46
2026-10-20	51	30–70	13.3 µg/m³	24h	44
2026-10-19	58	33–87	16.1 µg/m³	24h	39
2026-10-18	41	24–59	10.0 µg/m³	24h	46
2026-10-17	63	37–107	18.1 µg/m³	24h	42
2026-10-16	78	50–128	24.6 µg/m³	24h	33
2026-10-15	88	45–158	29.6 µg/m³	24h	42
2026-10-14	83	36–155	27.7 µg/m³	15h	33

Back to Rittō Air Quality