SmogRank / Germany / North Rhine-Westphalia / Lünen

Lünen, month by month

Lünen has a measured daily mean on 91 days since 18 June 2026. Its worst month was July 2026, at 34 US AQI (6.1 µg/m³), 2,396th of 2,784 cities on that month's world ranking. Its cleanest was August 2026, at 29 US AQI (5.3 µg/m³).

Every month since 2026

2026too few days for a mean (a year needs 199)91 days measured
JanFebMarAprMayJun10 daysJul34#2,396Aug29#2,690Sep17 daysOct36#1,546
Each square is a month's mean PM2.5 in US AQI from Lünen'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 Lünen 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

2 months
MonthWhy
Sep 202617 of 30 days measured; a month needs 21. The others: 13 with readings for part of the day (a day needs 18 hours).
Jun 202610 of 30 days measured; a month needs 21. The others: 3 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.

Lünen's worst months

MonthUS AQIDays measuredWorld rank
July 2026 346.1 µg/m³29 of 312,396thof 2,784
August 2026 295.3 µg/m³26 of 312,690thof 2,896

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.

Lünen's worst days

DayUS AQI
27 Jun 2026 6919.0 µg/m³
31 Jul 2026 6315.4 µg/m³
25 Jun 2026 6013.9 µg/m³
26 Jun 2026 5712.5 µg/m³
28 Jun 2026 5511.5 µg/m³
18 Jul 2026 5511.3 µg/m³
27 Aug 2026 5410.8 µg/m³
29 Sept 2026 5410.5 µg/m³
6 Oct 2026 5410.5 µg/m³
17 Jul 2026 5310.0 µg/m³

Daily means, the highest since 18 Jun 2026; 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, Lünen, Germany, 18 Jun 2026 – 10 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/de/luenen/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.

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

Updated 2026-10-12 19:07 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).