What is the air quality trend in Saint-Quentin?

Over the past 15 days, Saint-Quentin had an average AQI of 42 based on station measurements. The worst day was 2026-07-11 with AQI 51.

How is Saint-Quentin air quality measured?

Air quality in Saint-Quentin 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-Quentin, France

Name: Saint-Quentin 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-Quentin, France.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

219h

PM2.5 Station

219h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	24	18–42	5.8 µg/m³	6h	1
2026-07-21	39	5–71	10.4 µg/m³	15h	2
2026-07-20	35	15–75	9.1 µg/m³	14h	1
2026-07-19	33	6–54	7.9 µg/m³	18h	1
2026-07-18	45	23–79	11.8 µg/m³	17h	2
2026-07-17	43	16–66	10.9 µg/m³	16h	1
2026-07-16	48	16–73	12.5 µg/m³	12h	1
2026-07-15	47	15–163	14.0 µg/m³	17h	1
2026-07-14	48	27–80	12.6 µg/m³	15h	1
2026-07-13	37	11–84	9.4 µg/m³	16h	1
2026-07-12	50	19–165	15.5 µg/m³	14h	1
2026-07-11	51	4–157	15.5 µg/m³	15h	1
2026-07-10	47	8–203	18.4 µg/m³	16h	1
2026-07-09	50	9–227	21.9 µg/m³	15h	1
2026-07-08	38	9–107	10.1 µg/m³	13h	1

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