What is the air quality trend in Blois?

Over the past 8 days, Blois had an average AQI of 39 based on station measurements. The worst day was 2026-05-25 with AQI 59.

How is Blois air quality measured?

Air quality in Blois 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 Blois, France

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

Historical PM2.5 and AQI trend from monitoring stations near Blois, France.

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

160h

PM2.5 Station

160h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-29	42	25–62	10.3 µg/m³	23.6	19h	3
2026-05-28	44	23–78	10.9 µg/m³	27.3	24h	3
2026-05-27	36	25–61	8.7 µg/m³	16.2	22h	3
2026-05-26	53	35–72	13.7 µg/m³	53.1	21h	3
2026-05-25	59	30–243	20.6 µg/m³	36.8	24h	4
2026-05-24	31	17–54	7.5 µg/m³	13.7	24h	4
2026-05-23	27	15–54	6.4 µg/m³	9.9	23h	3
2026-05-22	26	25–27	6.2 µg/m³	10.7	3h	2

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