What is the air quality trend in Pontoise?

Over the past 15 days, Pontoise had an average AQI of 43 based on station measurements. The worst day was 2026-05-27 with AQI 55.

How is Pontoise air quality measured?

Air quality in 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 Pontoise, France

Name: 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 Pontoise, France.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

336h

PM2.5 Station

336h · 2 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-29	42	25–60	10.2 µg/m³	11.2	19h	18
2026-05-28	48	34–66	12.1 µg/m³	14.0	24h	16
2026-05-27	55	30–165	16.0 µg/m³	10.5	24h	17
2026-05-26	43	28–78	10.9 µg/m³	6.5	24h	18
2026-05-25	48	31–152	12.6 µg/m³	12.5	24h	21
2026-05-24	39	25–59	9.5 µg/m³	10.2	24h	19
2026-05-23	40	24–67	9.6 µg/m³	8.4	24h	18
2026-05-22	43	21–150	11.3 µg/m³	7.5	24h	19
2026-05-21	34	25–63	8.4 µg/m³	8.3	24h	16
2026-05-20	52	23–153	14.9 µg/m³	6.0	24h	18
2026-05-19	40	17–76	10.3 µg/m³	3.6	24h	16
2026-05-18	44	18–170	13.3 µg/m³	3.8	24h	17
2026-05-17	54	16–157	15.5 µg/m³	5.1	24h	18
2026-05-16	36	20–58	8.8 µg/m³	4.7	24h	19
2026-05-15	34	22–48	8.1 µg/m³	6.7	5h	26

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