What is the air quality trend in Tours?

Over the past 3 days, Tours had an average AQI of 20 based on station measurements. The worst day was with AQI .

How is Tours air quality measured?

Air quality in Tours 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 Tours, France

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

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

48 Hours 7 Days 14 Days 20 Days

PM2.5 Trend

41h · 1 station

Daily Summary

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-04-11	22	16–32	5.3 µg/m³	4h	1
2026-04-10	15	2–32	3.6 µg/m³	23h	1
2026-04-09	24	2–46	5.7 µg/m³	14h	1

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