SmogRank / France / Auvergne-Rhône-Alpes / Aurillac

Aurillac, month by month

Aurillac has a measured daily mean on 1,074 days since 1 January 2023. Its worst month was February 2023, at 52 US AQI (9.5 µg/m³), 697th of 1,129 cities on that month's world ranking. Its cleanest was September 2025, at 17 US AQI (3.0 µg/m³). 2025 averaged 28 US AQI (5.1 µg/m³), against 32 US AQI (5.8 µg/m³) in 2023.

Every month since 2023

202630 so far260 days measured2,589th of 2,791 in the world
Jan34#2,081Feb22#2,729Mar32#2,563Apr22#2,713May22#2,666Jun18 daysJul51#1,542Aug33#2,462Sep18#2,880Oct23#2,424
202528 for the year304 days measured2,515th of 2,681 in the world
Jan27#2,263Feb37#1,947Mar29#2,447Apr19#2,874May21 daysJun20 daysJul27#2,632Aug39#2,132Sep17#3,057Oct20 daysNov23#2,558Dec36#2,309
2024too few days for a mean (a year needs 257)177 days measured
Jan38#1,554Feb32#1,898Mar10 daysApr2 daysMay1 dayJun2 daysJul28#2,263Aug14 daysSepnoneOct13 daysNov34#1,975Dec42#1,541
202332 for the year333 days measured1,192nd of 1,355 in the world
Jan41#813Feb52#697Mar45#480Apr21#1,500May29#1,398Jun38#1,239Jul28#1,216Aug11 daysSep26#2,025Oct23#1,900Nov24#2,087Dec29#1,973
Each square is a month's mean PM2.5 in US AQI from Aurillac'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 Aurillac marked; each year, the year's. A dashed square is the running month, so far.
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

12 months
MonthWhy
Jun 202618 of 30 days measured; a month needs 21. The others: 12 with under 18 hours of readings or readings that failed our checks.
Oct 202520 of 31 days measured; a month needs 22. The others: 11 with under 18 hours of readings or readings that failed our checks.
Jun 202520 of 30 days measured; a month needs 21. The others: 10 with under 18 hours of readings or readings that failed our checks.
May 202521 of 31 days measured; a month needs 22. The others: 10 with under 18 hours of readings or readings that failed our checks.
Oct 202413 of 31 days measured; a month needs 22. The others: 18 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 202414 of 31 days measured; a month needs 22. The others: 17 with under 18 hours of readings or readings that failed our checks.
Jun 20242 of 30 days measured; a month needs 21. The others: 28 with under 18 hours of readings or readings that failed our checks.
May 20241 of 31 days measured; a month needs 22. The others: 30 with under 18 hours of readings or readings that failed our checks.
Apr 20242 of 30 days measured; a month needs 21. The others: 28 with under 18 hours of readings or readings that failed our checks.
Mar 202410 of 31 days measured; a month needs 22. The others: 21 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.

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

Aurillac's worst months

MonthUS AQIDays measuredWorld rankEpisode
February 2023 529.5 µg/m³28 of 28697thof 1,129Europe, 28 February to 4 March 2023
July 2026 519.3 µg/m³31 of 311,542ndof 2,784France, July 2026
March 2023 458.1 µg/m³31 of 31480thof 911Europe, 4 to 7 March 2023
Europe, 28 February to 4 March 2023
December 2024 427.5 µg/m³22 of 311,541stof 2,616–
January 2023 417.3 µg/m³28 of 31813thof 1,261–
August 2025 397.1 µg/m³27 of 312,132ndof 2,901–

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.

Aurillac's worst days

DayUS AQIEpisode
25 Jul 2026 15357.7 µg/m³France, July 2026
26 Jul 2026 9432.2 µg/m³France, July 2026
10 Jun 2025 8828.9 µg/m³Europe, June 2025
4 Mar 2023 8326.5 µg/m³Europe, 4 to 7 March 2023
Europe, 28 February to 4 March 2023
2 Mar 2023 8326.3 µg/m³Europe, 28 February to 4 March 2023
3 Mar 2023 8226.0 µg/m³Europe, 28 February to 4 March 2023
5 Mar 2023 7320.7 µg/m³Europe, 4 to 7 March 2023
16 Aug 2025 7220.3 µg/m³–
6 Jan 2026 7220.2 µg/m³–
27 Jul 2026 7120.0 µg/m³–

Daily means, the highest since 1 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, Aurillac, France, 1 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/aurillac/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.

Aurillac 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).