SmogRank / Ireland / Munster / Cluain Meala
Cluain Meala, month by month
Cluain Meala has a measured daily mean on 358 days since 26 May 2025. Its worst month was December 2025, at 54 US AQI (10.8 µg/m³), 1,172nd of 3,006 cities on that month's world ranking. Its cleanest was September 2026, at 27 US AQI (4.8 µg/m³).
Every month since 2025
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
6 months
| Month | Why |
|---|---|
| Jun 2026 | 15 of 30 days measured; a month needs 21. The others: 15 with under 18 hours of readings or readings that failed our checks. |
| Oct 2025 | 11 of 31 days measured; a month needs 22. The others: 20 with under 18 hours of readings or readings that failed our checks. |
| Sep 2025 | 15 of 30 days measured; a month needs 21. The others: 15 with under 18 hours of readings or readings that failed our checks. |
| Jul 2025 | 13 of 31 days measured; a month needs 22. The others: 18 with under 18 hours of readings or readings that failed our checks. |
| Jun 2025 | 8 of 30 days measured; a month needs 21. The others: 22 with under 18 hours of readings or readings that failed our checks. |
| May 2025 | 5 of 31 days measured; a month needs 22. The others: 1 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.
Cluain Meala's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| December 2025 | 5410.8 µg/m³ | 1,172ndof 3,006 | – |
| March 2026 | 498.9 µg/m³ | 1,903rdof 2,971 | Europe, 18 to 25 March 2026 |
| January 2026 | 448.0 µg/m³ | 1,495thof 2,617 | – |
| February 2026 | 397.1 µg/m³ | 2,212thof 2,866 | – |
| April 2026 | 366.4 µg/m³ | 2,078thof 2,941 | – |
| August 2025 | 336.0 µg/m³ | 2,510thof 2,901 | – |
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.
Cluain Meala's worst days
| Day | US AQI | Episode |
|---|---|---|
| 21 Mar 2026 | 8828.7 µg/m³ | Europe, 18 to 25 March 2026 |
| 20 Mar 2026 | 8024.4 µg/m³ | Europe, 18 to 25 March 2026 |
| 23 Dec 2025 | 7119.9 µg/m³ | – |
| 4 Mar 2026 | 7019.3 µg/m³ | – |
| 22 Mar 2026 | 7019.1 µg/m³ | Europe, 18 to 25 March 2026 |
| 29 Dec 2025 | 6918.7 µg/m³ | – |
| 1 Feb 2026 | 6818.0 µg/m³ | – |
| 31 Dec 2025 | 6617.3 µg/m³ | – |
| 22 Jan 2026 | 6617.2 µg/m³ | – |
| 31 Jan 2026 | 6617.2 µg/m³ | – |
Daily means, the highest since 26 May 2025; 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, Cluain Meala, Ireland, 26 May 2025 – 11 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/ie/cluain-meala/history (accessed 12 Oct 2026).
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.
Cluain Meala now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 22:07 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).