What is the air quality trend in Cergy-Pontoise?

Over the past 8 days, Cergy-Pontoise had an average AQI of 42 based on station measurements. The worst day was 2026-07-17 with AQI 56.

How is Cergy-Pontoise air quality measured?

Air quality in Cergy-Pontoise 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 Cergy-Pontoise, France

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

Historical PM2.5 and AQI trend from monitoring stations near Cergy-Pontoise, France.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 6 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-07-22	22	18–27	5.3 µg/m³	2.1	6h	12
2026-07-21	42	12–89	10.9 µg/m³	3.1	24h	20
2026-07-20	37	20–75	9.3 µg/m³	2.8	24h	18
2026-07-19	37	23–63	9.0 µg/m³	3.9	24h	17
2026-07-18	54	38–65	13.7 µg/m³	23.9	24h	17
2026-07-17	56	45–112	14.6 µg/m³	20.0	24h	16
2026-07-16	47	29–64	11.7 µg/m³	13.2	24h	15
2026-07-15	45	26–67	11.2 µg/m³	8.4	18h	14

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