SmogRank / France / Corsica / Corte

Corte, month by month

Corte has a measured daily mean on 333 days since 10 January 2023. Its worst month was July 2023, at 52 US AQI (9.5 µg/m³), 714th of 1,432 cities on that month's world ranking. Its cleanest was January 2024, at 19 US AQI (3.4 µg/m³).

Every month since 2023

2026too few days for a mean (a year needs 199)7 days measured
Jan1 dayFebnoneMarnoneAprnoneMay2 daysJunnoneJulnoneAugnoneSepnoneOct4 days
2025too few days for a mean (a year needs 256)0 days measured
JannoneFebnoneMarnoneAprnoneMaynoneJunnoneJulnoneAugnoneSepnoneOctnoneNovnoneDecnone
2024too few days for a mean (a year needs 257)63 days measured
Jan19#2,314Feb22#2,314Mar9 daysApr1 dayMaynoneJunnoneJulnoneAugnoneSepnoneOctnoneNovnoneDecnone
202334 for the year263 days measured1,167th of 1,355 in the world
Jan15 daysFeb3 daysMar9 daysApr27#1,369May25#1,478Jun33#1,322Jul52#714Aug41#1,221Sep48#869Oct37#1,264Nov23#2,114Dec28#2,019
Each square is a month's mean PM2.5 in US AQI from Corte'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 Corte 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

35 months
MonthWhy
Oct 20264 of 11 days measured; a month needs 8. The others: 1 with no readings from the monitor, 5 with readings for part of the day (a day needs 18 hours), 1 with under 18 hours of readings or readings that failed our checks.
Sep 2026No day measured. The others: 30 with readings for part of the day (a day needs 18 hours).
Aug 2026No day measured. The others: 4 with no readings from the monitor, 27 with readings for part of the day (a day needs 18 hours).
Jul 2026No day measured. The others: 31 with readings for part of the day (a day needs 18 hours).
Jun 2026No day measured. The others: 7 with no readings from the monitor, 23 with readings for part of the day (a day needs 18 hours).
May 20262 of 31 days measured; a month needs 22. The others: 1 with no readings from the monitor, 28 with readings for part of the day (a day needs 18 hours).
Apr 2026No day measured. The others: 30 with readings for part of the day (a day needs 18 hours).
Mar 2026No day measured. The others: 31 with readings for part of the day (a day needs 18 hours).
Feb 2026No day measured. The others: 28 with readings for part of the day (a day needs 18 hours).
Jan 20261 of 31 days measured; a month needs 22. The others: 1 with no readings from the monitor, 29 with readings for part of the day (a day needs 18 hours).
Dec 2025No day measured.
Nov 2025No day measured.
Oct 2025No day measured.
Sep 2025No day measured.
Aug 2025No day measured.
Jul 2025No day measured.
Jun 2025No day measured.
May 2025No day measured.
Apr 2025No day measured.
Mar 2025No day measured.
Feb 2025No day measured.
Jan 2025No day measured.
Dec 2024No day measured. The others: 31 with readings for part of the day (a day needs 18 hours).
Nov 2024No day measured. The others: 1 with no readings from the monitor, 29 with readings for part of the day (a day needs 18 hours).
Oct 2024No day measured. The others: 2 with no readings from the monitor, 29 with readings for part of the day (a day needs 18 hours).
Sep 2024No day measured. The others: 8 with no readings from the monitor, 22 with readings for part of the day (a day needs 18 hours).
Aug 2024No day measured. The others: 2 with no readings from the monitor, 29 with readings for part of the day (a day needs 18 hours).
Jul 2024No day measured. The others: 31 with readings for part of the day (a day needs 18 hours).
Jun 2024No day measured. The others: 2 with no readings from the monitor, 28 with readings for part of the day (a day needs 18 hours).
May 2024No day measured. The others: 31 with readings for part of the day (a day needs 18 hours).
Apr 20241 of 30 days measured; a month needs 21. The others: 29 with readings for part of the day (a day needs 18 hours).
Mar 20249 of 31 days measured; a month needs 22. The others: 10 with no readings from the monitor, 12 with readings for part of the day (a day needs 18 hours).
Mar 20239 of 31 days measured; a month needs 22. The others: 1 with no readings from the monitor, 1 with readings for part of the day (a day needs 18 hours), 20 missing from OpenAQ's archive.
Feb 20233 of 28 days measured; a month needs 20. The others: 25 missing from OpenAQ's archive.
Jan 202315 of 31 days measured; a month needs 22. The others: 7 missing from OpenAQ's archive.

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

Corte's worst months

MonthUS AQIDays measuredWorld rank
July 2023 529.5 µg/m³26 of 31714thof 1,432
September 2023 488.7 µg/m³29 of 30869thof 2,176
August 2023 417.3 µg/m³25 of 311,221stof 1,980
October 2023 376.6 µg/m³29 of 311,264thof 2,012
June 2023 336.0 µg/m³25 of 301,322ndof 1,603
December 2023 285.0 µg/m³24 of 312,019thof 2,247

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.

Corte's worst days

DayUS AQI
1 Dec 2023 7823.4 µg/m³
13 Jul 2023 6818.3 µg/m³
18 Sept 2023 6516.7 µg/m³
21 Jul 2023 6416.1 µg/m³
17 Sept 2023 6315.3 µg/m³
11 Jul 2023 6214.9 µg/m³
20 Jul 2023 6214.9 µg/m³
22 Jun 2023 6114.6 µg/m³
12 Jul 2023 6013.9 µg/m³
10 Jul 2023 5913.3 µg/m³

Daily means, the highest since 10 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, Corte, France, 10 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/corte/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.

Corte 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).