SmogRank / Belgium / Wallonia / Jumet

Jumet, month by month

Jumet has a measured daily mean on 462 days since 1 February 2024. Its worst month was March 2026, at 52 US AQI (9.8 µg/m³), 1,713th of 2,971 cities on that month's world ranking. Its cleanest was September 2025, at 8 US AQI (1.5 µg/m³).

Every month since 2024

202626 so far256 days measured2,677th of 2,791 in the world
Jan35#2,028Feb17#2,817Mar52#1,713Apr30#2,400May27#2,415Jun19 daysJul18#2,743Aug13#2,889Sep16#2,926Oct31#1,941
2025too few days for a mean (a year needs 256)205 days measured
JannoneFebnoneMarnoneAprnoneMay11 daysJun17#2,475Jul16#2,857Aug16#2,890Sep8#3,103Oct19#2,510Nov22#2,582Dec31#2,587
2024too few days for a mean (a year needs 257)1 day measured
JanFeb1 dayMarnoneAprnoneMaynoneJunnoneJulnoneAugnoneSepnoneOctnoneNovnoneDecnone
Each square is a month's mean PM2.5 in US AQI from Jumet'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 Jumet 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

17 months
MonthWhy
Jun 202619 of 30 days measured; a month needs 21. The others: 11 with under 18 hours of readings or readings that failed our checks.
May 202511 of 31 days measured; a month needs 22. The others: 20 with under 18 hours of readings or readings that failed our checks.
Apr 2025No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Mar 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Feb 2025No day measured. The others: 28 with under 18 hours of readings or readings that failed our checks.
Jan 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Dec 2024No day measured. The others: 31 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 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Feb 20241 of 29 days measured; a month needs 21. The others: 28 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.

Jumet's worst months

MonthUS AQIDays measuredWorld rankEpisode
March 2026 529.8 µg/m³28 of 311,713thof 2,971Europe, 18 to 25 March 2026
Europe, 1 to 12 March 2026
January 2026 356.3 µg/m³27 of 312,028thof 2,617Europe, January and February 2026
December 2025 315.5 µg/m³31 of 312,587thof 3,006–
April 2026 305.4 µg/m³29 of 302,400thof 2,941–
May 2026 274.8 µg/m³30 of 312,415thof 2,874–
November 2025 223.9 µg/m³27 of 302,582ndof 2,715–

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.

Jumet's worst days

DayUS AQIEpisode
20 Mar 2026 8929.4 µg/m³Europe, 18 to 25 March 2026
23 Mar 2026 8627.9 µg/m³Europe, 18 to 25 March 2026
7 Mar 2026 8527.4 µg/m³Europe, 1 to 12 March 2026
26 Jan 2026 8427.0 µg/m³Europe, January and February 2026
8 Mar 2026 8326.3 µg/m³Europe, 1 to 12 March 2026
24 Mar 2026 8326.2 µg/m³Europe, 18 to 25 March 2026
22 Mar 2026 7320.9 µg/m³Europe, 18 to 25 March 2026
9 Mar 2026 7120.0 µg/m³Europe, 1 to 12 March 2026
19 Mar 2026 6717.8 µg/m³Europe, 18 to 25 March 2026
22 Nov 2025 6516.8 µg/m³–

Daily means, the highest since 1 Feb 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, Jumet, Belgium, 1 Feb 2024 – 10 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/be/jumet/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.

Jumet 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).