What is the air quality trend in Sant Celoni?

Over the past 5 days, Sant Celoni had an average AQI of 21 based on station measurements. The worst day was 2026-05-19 with AQI 41.

How is Sant Celoni air quality measured?

Air quality in Sant Celoni 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 Sant Celoni, Spain

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

Historical PM2.5 and AQI trend from monitoring stations near Sant Celoni, Spain.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

50h

PM2.5 Station

50h · 4 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-22	38	38–38	9.1 µg/m³	—	2h	4
2026-05-19	41	7–82	10.9 µg/m³	11.2	16h	1
2026-05-18	16	2–39	3.9 µg/m³	4.3	22h	1
2026-05-17	6	1–17	1.2 µg/m³	1.6	7h	1
2026-05-16	5	4–6	1.2 µg/m³	1.4	3h	1

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