What is the air quality trend in Nihammatsu?

Over the past 6 days, Nihammatsu had an average AQI of 38 based on station measurements. The worst day was with AQI .

How is Nihammatsu air quality measured?

Air quality in Nihammatsu 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 Nihammatsu, Japan

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

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

Current AQI
Good

48 Hours 7 Days 14 Days 20 Days

PM2.5 Trend

112h · 15 stations

Daily Summary

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-04-11	49	29–60	12.3 µg/m³	18.6	19h	20
2026-04-10	35	15–55	8.6 µg/m³	17.3	24h	19
2026-04-09	29	13–40	7.1 µg/m³	13.5	18h	18
2026-04-08	35	27–42	8.3 µg/m³	10.0	9h	17
2026-04-07	30	9–63	7.4 µg/m³	11.4	24h	17
2026-04-06	52	43–60	13.0 µg/m³	20.1	18h	20

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