What is the air quality trend in Saint-Omer?

Over the past 21 days, Saint-Omer had an average AQI of 44 based on station measurements. The worst day was 2026-05-27 with AQI 57.

How is Saint-Omer air quality measured?

Air quality in Saint-Omer 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 Saint-Omer, France

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

Historical PM2.5 and AQI trend from monitoring stations near Saint-Omer, France.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

478h

PM2.5 Station

478h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	44	24–80	11.5 µg/m³	18h	10
2026-05-28	42	29–76	10.4 µg/m³	24h	9
2026-05-27	57	28–140	16.0 µg/m³	24h	10
2026-05-26	46	26–105	12.1 µg/m³	24h	9
2026-05-25	46	30–76	11.9 µg/m³	24h	10
2026-05-24	43	26–72	10.9 µg/m³	24h	9
2026-05-23	39	17–74	9.6 µg/m³	24h	9
2026-05-22	51	15–174	16.2 µg/m³	24h	10
2026-05-21	49	24–160	14.1 µg/m³	24h	10
2026-05-20	39	23–112	10.1 µg/m³	24h	10
2026-05-19	48	18–84	13.1 µg/m³	24h	10
2026-05-18	49	21–189	15.9 µg/m³	24h	11
2026-05-17	45	17–106	12.1 µg/m³	23h	11
2026-05-16	41	23–71	10.4 µg/m³	23h	11
2026-05-15	44	22–138	11.7 µg/m³	24h	12
2026-05-14	42	23–84	11.1 µg/m³	24h	14
2026-05-13	38	22–162	10.6 µg/m³	24h	11
2026-05-12	38	23–171	11.2 µg/m³	24h	13
2026-05-11	44	26–190	14.3 µg/m³	24h	12
2026-05-10	40	23–56	9.7 µg/m³	24h	12
2026-05-09	42	30–53	10.0 µg/m³	6h	16

Back to Saint-Omer Air Quality