SmogRank / France / Auvergne-Rhône-Alpes / Roussillon

Roussillon, month by month

Roussillon has a measured daily mean on 50 days since 29 January 2024. Its worst month was February 2024, at 52 US AQI (9.6 µg/m³), 730th of 2,486 cities on that month's world ranking.

Every month since 2024

2026too few days for a mean (a year needs 199)10 days measured
Jan2 daysFebnoneMarnoneAprnoneMay2 daysJunnoneJulnoneAugnoneSep1 dayOct5 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)40 days measured
Jan3 daysFeb52#730Mar9 daysApr2 daysMaynoneJunnoneJulnoneAugnoneSepnoneOctnoneNovnoneDecnone
Each square is a month's mean PM2.5 in US AQI from Roussillon'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 Roussillon 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

33 months
MonthWhy
Oct 20265 of 11 days measured; a month needs 8. The others: 3 with no readings from the monitor, 2 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 20261 of 30 days measured; a month needs 21. The others: 29 with readings for part of the day (a day needs 18 hours).
Aug 2026No day measured. The others: 31 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: 2 with no readings from the monitor, 28 with readings for part of the day (a day needs 18 hours).
Mar 2026No day measured. The others: 1 with no readings from the monitor, 30 with readings for part of the day (a day needs 18 hours).
Feb 2026No day measured. The others: 1 with no readings from the monitor, 27 with readings for part of the day (a day needs 18 hours).
Jan 20262 of 31 days measured; a month needs 22. The others: 3 with no readings from the monitor, 25 with readings for part of the day (a day needs 18 hours), 1 with readings left out by our checks.
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: 3 with no readings from the monitor, 28 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: 31 with readings for part of the day (a day needs 18 hours).
Sep 2024No day measured. The others: 10 with no readings from the monitor, 20 with readings for part of the day (a day needs 18 hours).
Aug 2024No day measured. The others: 3 with no readings from the monitor, 28 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: 1 with no readings from the monitor, 29 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 20242 of 30 days measured; a month needs 21. The others: 28 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).
Jan 20243 of 31 days measured; a month needs 22.

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

Roussillon's worst months

MonthUS AQIDays measuredWorld rank
February 2024 529.6 µg/m³26 of 29730thof 2,486

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.

Roussillon's worst days

DayUS AQI
31 Jan 2024 7421.2 µg/m³
5 Feb 2024 6918.8 µg/m³
29 Feb 2024 6918.7 µg/m³
12 Feb 2024 6315.8 µg/m³
6 Feb 2024 6315.7 µg/m³
14 Feb 2024 6315.3 µg/m³
3 Feb 2024 6114.2 µg/m³
7 Feb 2024 6013.7 µg/m³
30 Jan 2024 5712.5 µg/m³
1 Mar 2024 5712.2 µg/m³

Daily means, the highest since 29 Jan 2024; 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, Roussillon, France, 29 Jan 2024 – 11 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/fr/roussillon/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.

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

Updated 2026-10-12 20:07 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).