What is the air quality trend in Keelung?

Over the past 8 days, Keelung had an average AQI of 57 based on station measurements. The worst day was 2026-07-21 with AQI 63.

How is Keelung air quality measured?

Air quality in Keelung 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 Keelung, Taiwan

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

Historical PM2.5 and AQI trend from monitoring stations near Keelung, Taiwan.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

167h

PM2.5 Station

167h · 11 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	60	53–63	16.2 µg/m³	6h	14
2026-07-21	63	41–87	17.8 µg/m³	24h	8
2026-07-20	61	36–77	17.1 µg/m³	23h	9
2026-07-19	59	38–73	16.0 µg/m³	24h	9
2026-07-18	62	32–83	17.6 µg/m³	24h	10
2026-07-17	59	37–149	16.1 µg/m³	24h	11
2026-07-16	48	27–65	12.0 µg/m³	24h	12
2026-07-15	50	37–57	12.2 µg/m³	18h	11

Back to Keelung Air Quality