SmogRank / France / Hauts-de-France / Béthune

Béthune, month by month

Béthune has a measured daily mean on 778 days since 1 January 2023. Its worst month was March 2026, at 67 US AQI (17.8 µg/m³), 678th of 2,971 cities on that month's world ranking. Its cleanest was February 2024, at 28 US AQI (5.1 µg/m³).

Every month since 2023

202652 so far226 days measured1,177th of 2,791 in the world
Jan58#896Feb48#1,795Mar67#678Apr13 daysMay17 daysJun16 daysJul44#1,912Aug36#2,290Sep33#1,823Oct45#965
2025too few days for a mean (a year needs 256)242 days measured
Jan11 daysFeb19 daysMar20 daysApr60#599May17 daysJun11 daysJul32#2,378Aug18 daysSep29#2,453Oct15 daysNov18 daysDec61#774
2024too few days for a mean (a year needs 257)55 days measured
Jan21 daysFeb28#2,109Mar10 daysAprnoneMaynoneJunnoneJulnoneAugnoneSepnoneOctnoneNovnoneDec3 days
2023too few days for a mean (a year needs 256)255 days measured
Jan15 daysFeb19 daysMar19 daysApr57#240May61#151Jun60#444Jul51#751Aug13 daysSep2 daysOct20 daysNov32#1,805Dec40#1,497
Each square is a month's mean PM2.5 in US AQI from Béthune'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 Béthune 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

28 months
MonthWhy
Jun 202616 of 30 days measured; a month needs 21. The others: 14 with under 18 hours of readings or readings that failed our checks.
May 202617 of 31 days measured; a month needs 22. The others: 14 with under 18 hours of readings or readings that failed our checks.
Apr 202613 of 30 days measured; a month needs 21. The others: 17 with under 18 hours of readings or readings that failed our checks.
Nov 202518 of 30 days measured; a month needs 21. The others: 12 with under 18 hours of readings or readings that failed our checks.
Oct 202515 of 31 days measured; a month needs 22. The others: 16 with under 18 hours of readings or readings that failed our checks.
Aug 202518 of 31 days measured; a month needs 22. The others: 13 with under 18 hours of readings or readings that failed our checks.
Jun 202511 of 30 days measured; a month needs 21. The others: 19 with under 18 hours of readings or readings that failed our checks.
May 202517 of 31 days measured; a month needs 22. The others: 14 with under 18 hours of readings or readings that failed our checks.
Mar 202520 of 31 days measured; a month needs 22. The others: 11 with under 18 hours of readings or readings that failed our checks.
Feb 202519 of 28 days measured; a month needs 20. The others: 9 with under 18 hours of readings or readings that failed our checks.
Jan 202511 of 31 days measured; a month needs 22. The others: 20 with under 18 hours of readings or readings that failed our checks.
Dec 20243 of 31 days measured; a month needs 22. The others: 28 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.
May 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Apr 2024No day measured. The others: 30 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.
Jan 202421 of 31 days measured; a month needs 22. The others: 10 with under 18 hours of readings or readings that failed our checks.
Oct 202320 of 31 days measured; a month needs 22. The others: 11 with under 18 hours of readings or readings that failed our checks.
Sep 20232 of 30 days measured; a month needs 21. The others: 28 with under 18 hours of readings or readings that failed our checks.
Aug 202313 of 31 days measured; a month needs 22. The others: 18 with under 18 hours of readings or readings that failed our checks.
Mar 202319 of 31 days measured; a month needs 22. The others: 12 missing from OpenAQ's archive.
Feb 202319 of 28 days measured; a month needs 20. The others: 9 missing from OpenAQ's archive.
Jan 202315 of 31 days measured; a month needs 22. The others: 7 missing from OpenAQ's archive, 9 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.

Béthune's worst months

MonthUS AQIDays measuredWorld rankEpisode
March 2026 6717.8 µg/m³29 of 31678thof 2,971Europe, 18 to 25 March 2026
Europe, 1 to 12 March 2026
May 2023 6114.6 µg/m³31 of 31151stof 1,600–
December 2025 6114.3 µg/m³28 of 31774thof 3,006Europe, December 2025 to January 2026
June 2023 6013.8 µg/m³26 of 30444thof 1,603–
April 2025 6013.8 µg/m³26 of 30599thof 2,951–
January 2026 5812.7 µg/m³22 of 31896thof 2,617Europe, January and February 2026
Europe, December 2025 to January 2026

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.

Béthune's worst days

DayUS AQIEpisode
25 Mar 2025 13950.9 µg/m³Europe, March 2025
10 Feb 2025 13850.7 µg/m³Europe, 1 to 14 February 2025
3 Feb 2025 13147.7 µg/m³Europe, 1 to 14 February 2025
15 Feb 2023 13047.4 µg/m³Europe, 6 to 25 February 2023
2 Feb 2025 12946.7 µg/m³Europe, 1 to 14 February 2025
5 Mar 2025 12746.1 µg/m³Germany, Poland and 25 more countries, March 2025
23 Mar 2026 12745.9 µg/m³Europe, 18 to 25 March 2026
14 Feb 2023 12545.2 µg/m³Europe, 6 to 25 February 2023
26 Jan 2026 12445.0 µg/m³Europe, January and February 2026
8 Mar 2026 12444.7 µg/m³Europe, 1 to 12 March 2026

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, Béthune, 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/bethune/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.

Béthune 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).