SmogRank / The Netherlands / Limburg / Hoensbroek

Hoensbroek, month by month

Hoensbroek has a measured daily mean on 58 days since 13 August 2026. Its worst month was September 2026, at 27 US AQI (4.9 µg/m³), 2,403rd of 2,997 cities on that month's world ranking.

Every month since 2026

2026too few days for a mean (a year needs 200)58 days measured

JanFebMarAprMayJunJulAug17 daysSep27#2,403 Oct31#1,901

Each square is a month's mean PM2.5 in US AQI from Hoensbroek'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 Hoensbroek marked; each year, the year's. A dashed square is the running month, so far.

Good0–50

Moderate51–100

Unhealthy for 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

1 month

Month	Why
Aug 2026	17 of 31 days measured; a month needs 22. The others: 2 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.

Hoensbroek's worst months

Month	US AQI	Days measured	World rank
September 2026	274.9 µg/m³	29 of 30	2,403rdof 2,997

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.

Hoensbroek's worst days

Day	US AQI
15 Aug 2026	5611.6 µg/m³
27 Sept 2026	5410.6 µg/m³
5 Oct 2026	529.9 µg/m³
29 Sept 2026	529.6 µg/m³
4 Oct 2026	519.1 µg/m³
26 Sept 2026	498.8 µg/m³
28 Sept 2026	478.5 µg/m³
7 Oct 2026	437.8 µg/m³
16 Aug 2026	437.7 µg/m³
18 Aug 2026	427.6 µg/m³

Daily means, the highest since 13 Aug 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, Hoensbroek, The Netherlands, 13 Aug 2026 – 12 Oct 2026. Monitor data from RIVM Luchtmeetnet via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/nl/hoensbroek/history (accessed 13 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.

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

Updated 2026-10-13 03:07 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).