What is the air quality trend in Osny?

Over the past 15 days, Osny had an average AQI of 45 based on station measurements. The worst day was 2026-05-17 with AQI 56.

How is Osny air quality measured?

Air quality in Osny 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 Osny, France

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

Historical PM2.5 and AQI trend from monitoring stations near Osny, 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	46	28–81	11.7 µg/m³	11.9	20h	13
2026-05-28	52	33–83	13.5 µg/m³	14.7	24h	12
2026-05-27	51	23–147	13.4 µg/m³	11.0	24h	13
2026-05-26	43	17–89	11.0 µg/m³	6.9	24h	14
2026-05-25	49	33–171	14.2 µg/m³	12.8	24h	16
2026-05-24	53	28–165	16.5 µg/m³	10.6	24h	13
2026-05-23	42	25–63	10.3 µg/m³	9.3	24h	13
2026-05-22	38	23–64	9.4 µg/m³	7.7	24h	13
2026-05-21	38	25–64	9.4 µg/m³	9.0	24h	14
2026-05-20	52	19–173	16.8 µg/m³	5.8	24h	13
2026-05-19	42	20–92	11.0 µg/m³	3.7	24h	11
2026-05-18	48	17–231	17.9 µg/m³	4.0	24h	13
2026-05-17	56	20–162	16.6 µg/m³	5.2	24h	15
2026-05-16	37	16–69	9.3 µg/m³	4.9	24h	15
2026-05-15	36	21–52	8.6 µg/m³	7.7	4h	21

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