SmogRank / France / Pays de la Loire / Le Mans

Le Mans, month by month

Le Mans has a measured daily mean on 303 days since 11 January 2023. Its worst month was February 2023, at 64 US AQI (16.1 µg/m³), 277th of 1,129 cities on that month's world ranking. Its cleanest was May 2024, at 31 US AQI (5.6 µg/m³).

Every month since 2023

2026too few days for a mean (a year needs 199)29 days measured
Jan4 daysFebnoneMarnoneAprnoneMay3 daysJun2 daysJul7 daysAug1 daySep6 daysOct6 days
2025too few days for a mean (a year needs 256)1 day measured
Jan1 dayFebnoneMarnoneAprnoneMaynoneJunnoneJulnoneAugnoneSepnoneOctnoneNovnoneDecnone
2024too few days for a mean (a year needs 257)54 days measured
JannoneFeb1 dayMarnoneApr34#1,621May31#2,133JunnoneJulnoneAugnoneSepnoneOctnoneNovnoneDecnone
2023too few days for a mean (a year needs 256)219 days measured
Jan8 daysFeb64#277Mar48#387Apr51#563May47#799Jun52#856Jul32#1,121Aug11 daysSep20 daysOct17 daysNovnoneDecnone
Each square is a month's mean PM2.5 in US AQI from Le Mans's measured days, with its place on that month's world ranking under it. A month has a mean once 70% of its days are measured, the rule the monthly rankings use; under that, the square gives the days measured. Each square opens that month's ranking with Le Mans marked; each year, the year's.
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

Months without a mean, and why

38 months
MonthWhy
Oct 20266 of 11 days measured; a month needs 8. The others: 5 with readings for part of the day (a day needs 18 hours).
Sep 20266 of 30 days measured; a month needs 21. The others: 24 with readings for part of the day (a day needs 18 hours).
Aug 20261 of 31 days measured; a month needs 22. The others: 30 with under 18 hours of readings or readings that failed our checks.
Jul 20267 of 31 days measured; a month needs 22. The others: 24 with under 18 hours of readings or readings that failed our checks.
Jun 20262 of 30 days measured; a month needs 21. The others: 28 with under 18 hours of readings or readings that failed our checks.
May 20263 of 31 days measured; a month needs 22. The others: 28 with under 18 hours of readings or readings that failed our checks.
Apr 2026No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Mar 2026No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Feb 2026No day measured. The others: 28 with under 18 hours of readings or readings that failed our checks.
Jan 20264 of 31 days measured; a month needs 22. The others: 27 with under 18 hours of readings or readings that failed our checks.
Dec 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Nov 2025No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Oct 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Sep 2025No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Aug 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Jul 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Jun 2025No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
May 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Apr 2025No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Mar 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Feb 2025No day measured. The others: 28 with under 18 hours of readings or readings that failed our checks.
Jan 20251 of 31 days measured; a month needs 22. The others: 30 with under 18 hours of readings or readings that failed our checks.
Dec 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Nov 2024No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Oct 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Sep 2024No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Aug 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Jul 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Jun 2024No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Mar 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Feb 20241 of 29 days measured; a month needs 21. The others: 28 with under 18 hours of readings or readings that failed our checks.
Jan 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Dec 2023No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Nov 2023No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Oct 202317 of 31 days measured; a month needs 22. The others: 14 with under 18 hours of readings or readings that failed our checks.
Sep 202320 of 30 days measured; a month needs 21. The others: 10 with under 18 hours of readings or readings that failed our checks.
Aug 202311 of 31 days measured; a month needs 22. The others: 20 with under 18 hours of readings or readings that failed our checks.
Jan 20238 of 31 days measured; a month needs 22. The others: 13 with under 18 hours of readings or readings that failed our checks.

A day counts once 18 hours of it are measured; a month needs 70% of its days.

Le Mans's worst months

MonthUS AQIDays measuredWorld rankEpisode
February 2023 6416.1 µg/m³28 of 28277thof 1,129Europe, 28 February to 4 March 2023
Europe, 6 to 25 February 2023
June 2023 529.6 µg/m³30 of 30856thof 1,603–
April 2023 519.2 µg/m³28 of 30563rdof 1,622France, Belgium and Germany, April 2023
March 2023 488.7 µg/m³30 of 31387thof 911Europe, 28 February to 4 March 2023
May 2023 478.5 µg/m³24 of 31799thof 1,600–
April 2024 346.2 µg/m³27 of 301,621stof 2,520–

Monthly means over the days measured; finished months only. World rank: its place on that month's world ranking of every city with enough days. Each month opens that ranking.

Le Mans's worst days

DayUS AQIEpisode
9 Feb 2023 11641.6 µg/m³Europe, 6 to 25 February 2023
10 Feb 2023 10336.2 µg/m³Europe, 6 to 25 February 2023
14 Feb 2023 10135.5 µg/m³Europe, 6 to 25 February 2023
3 Mar 2023 9834.3 µg/m³Europe, 28 February to 4 March 2023
15 Feb 2023 9733.8 µg/m³Europe, 6 to 25 February 2023
18 Apr 2023 9030.2 µg/m³France, Belgium and Germany, April 2023
2 Mar 2023 8829.0 µg/m³Europe, 28 February to 4 March 2023
11 Feb 2023 8426.8 µg/m³Europe, 6 to 25 February 2023
29 Jan 2023 7923.9 µg/m³–
8 May 2024 7622.5 µg/m³–

Daily means, the highest since 11 Jan 2023; the WHO's daily guideline is 15 µg/m³. Each date opens that day's world ranking, and each episode the bad-air spell it was part of.

Use this history

SmogRank, PM2.5 monthly and daily means, Le Mans, France, 11 Jan 2023 – 11 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/fr/le-mans/history (accessed 12 Oct 2026).

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You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.

Le Mans now: the last 24 hours, its ranks today and the last 12 months day by day.

Updated 2026-10-12 18:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some low-cost readings: Sensor.Community, ODbL (data and licence). Some readings: Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Vietnam's government monitors; Aurassure; Umhverfisstofnun (Environment Agency of Iceland); RMCAB (Secretaría Distrital de Ambiente, Bogotá); Love My Air (City and County of Denver), no reuse terms published (why we use them).