SmogRank / France / Occitanie / Montpellier

Montpellier, month by month

Montpellier has a measured daily mean on 790 days since 1 January 2023. Its worst month was February 2023, at 65 US AQI (16.7 µg/m³), 248th of 1,129 cities on that month's world ranking. Its cleanest was April 2023, at 29 US AQI (5.3 µg/m³).

Every month since 2023

2026too few days for a mean (a year needs 200)155 days measured
Jan9 daysFeb13 daysMar18 daysApr10 daysMay16 daysJun12 daysJul19 daysAug52#938Sep34#1,641Oct39#1,327
2025too few days for a mean (a year needs 256)104 days measured
Jan21 daysFeb63#838Mar9 daysApr7 daysMay7 daysJun3 daysJul10 daysAug7 daysSep4 daysOct5 daysNov4 daysDec7 days
2024too few days for a mean (a year needs 257)174 days measured
Jan62#475Feb56#476Mar10 daysApr2 daysMaynoneJun2 daysJul48#1,137Aug15 daysSepnoneOct12 daysNov56#580Dec58#621
202348 for the year357 days measured751st of 1,355 in the world
Jan47#637Feb65#248Mar53#253Apr29#1,315May34#1,262Jun43#1,134Jul33#1,095Aug39#1,289Sep43#1,202Oct44#764Nov43#1,200Dec57#413
Each square is a month's mean PM2.5 in US AQI from Montpellier'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 Montpellier 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

25 months
MonthWhy
Jul 202619 of 31 days measured; a month needs 22. The others: 12 with under 18 hours of readings or readings that failed our checks.
Jun 202612 of 30 days measured; a month needs 21. The others: 18 with under 18 hours of readings or readings that failed our checks.
May 202616 of 31 days measured; a month needs 22. The others: 15 with under 18 hours of readings or readings that failed our checks.
Apr 202610 of 30 days measured; a month needs 21. The others: 20 with under 18 hours of readings or readings that failed our checks.
Mar 202618 of 31 days measured; a month needs 22. The others: 13 with under 18 hours of readings or readings that failed our checks.
Feb 202613 of 28 days measured; a month needs 20. The others: 15 with under 18 hours of readings or readings that failed our checks.
Jan 20269 of 31 days measured; a month needs 22. The others: 22 with under 18 hours of readings or readings that failed our checks.
Dec 20257 of 31 days measured; a month needs 22. The others: 24 with under 18 hours of readings or readings that failed our checks.
Nov 20254 of 30 days measured; a month needs 21. The others: 26 with under 18 hours of readings or readings that failed our checks.
Oct 20255 of 31 days measured; a month needs 22. The others: 26 with under 18 hours of readings or readings that failed our checks.
Sep 20254 of 30 days measured; a month needs 21. The others: 26 with under 18 hours of readings or readings that failed our checks.
Aug 20257 of 31 days measured; a month needs 22. The others: 24 with under 18 hours of readings or readings that failed our checks.
Jul 202510 of 31 days measured; a month needs 22. The others: 21 with under 18 hours of readings or readings that failed our checks.
Jun 20253 of 30 days measured; a month needs 21. The others: 27 with under 18 hours of readings or readings that failed our checks.
May 20257 of 31 days measured; a month needs 22. The others: 24 with under 18 hours of readings or readings that failed our checks.
Apr 20257 of 30 days measured; a month needs 21. The others: 23 with under 18 hours of readings or readings that failed our checks.
Mar 20259 of 31 days measured; a month needs 22. The others: 22 with under 18 hours of readings or readings that failed our checks.
Jan 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 202412 of 31 days measured; a month needs 22. The others: 19 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 202415 of 31 days measured; a month needs 22. The others: 16 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 2024No day measured. The others: 31 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.

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

Montpellier's worst months

MonthUS AQIDays measuredWorld rankEpisode
February 2023 6516.7 µg/m³28 of 28248thof 1,129Europe, 6 to 25 February 2023
Spain, France and Portugal, February 2023
February 2025 6315.6 µg/m³20 of 28838thof 2,633Europe, 14 February to 1 March 2025
Europe, 1 to 14 February 2025
January 2024 6214.8 µg/m³29 of 31475thof 2,385Europe, 27 January to 2 February 2024
Europe, 8 to 27 January 2024and 2 more
December 2024 5812.6 µg/m³22 of 31621stof 2,616Europe, 24 December 2024 to 3 January 2025
December 2023 5712.3 µg/m³31 of 31413thof 2,247Spain, France and 2 more countries, December 2023 to January 2024
France, Spain and Germany, December 2023
February 2024 5612.0 µg/m³27 of 29476thof 2,486Southern Europe, February 2024
Europe, 27 January to 2 February 2024

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.

Montpellier's worst days

DayUS AQIEpisode
19 Jan 2025 11039.0 µg/m³Germany, France and 19 more countries, January 2025
12 Feb 2023 10938.9 µg/m³Europe, 6 to 25 February 2023
14 Jan 2024 10738.1 µg/m³Europe, 8 to 27 January 2024
Western Europe, January 2024
11 Feb 2023 9934.7 µg/m³Europe, 6 to 25 February 2023
30 Dec 2024 9934.6 µg/m³Europe, 24 December 2024 to 3 January 2025
31 Dec 2024 9834.1 µg/m³Europe, 24 December 2024 to 3 January 2025
13 Feb 2023 9633.4 µg/m³Europe, 6 to 25 February 2023
29 Dec 2024 9331.6 µg/m³Europe, 24 December 2024 to 3 January 2025
13 Jan 2024 9029.8 µg/m³Europe, 8 to 27 January 2024
18 Dec 2023 8929.3 µg/m³France, Spain and Germany, December 2023

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, Montpellier, 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/montpellier/history (accessed 12 Oct 2026).

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

Updated 2026-10-12 21:07 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).