SmogRank / Ireland / Munster / Killarney

Killarney, month by month

Killarney has a measured daily mean on 378 days since 21 May 2025. Its worst month was January 2026, at 55 US AQI (11.1 µg/m³), 985th of 2,617 cities on that month's world ranking. Its cleanest was August 2026, at 22 US AQI (4.0 µg/m³).

Every month since 2025

202633 so far249 days measured2,487th of 2,791 in the world
Jan55#985Feb42#2,078Mar45#2,114Apr32#2,271May29#2,220Jun20 daysJul27#2,617Aug22#2,838Sep23#2,676Oct18#2,632
2025too few days for a mean (a year needs 256)129 days measured
JanFebMarAprMay8 daysJun12 daysJul19 daysAug53#1,233Sep9 daysOct11 daysNov37#1,959Dec21 days
Each square is a month's mean PM2.5 in US AQI from Killarney'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 Killarney 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

7 months
MonthWhy
Jun 202620 of 30 days measured; a month needs 21. The others: 10 with readings for part of the day (a day needs 18 hours).
Dec 202521 of 31 days measured; a month needs 22. The others: 10 with readings for part of the day (a day needs 18 hours).
Oct 202511 of 31 days measured; a month needs 22. The others: 5 with no readings from the monitor, 15 with readings for part of the day (a day needs 18 hours).
Sep 20259 of 30 days measured; a month needs 21. The others: 21 with readings for part of the day (a day needs 18 hours).
Jul 202519 of 31 days measured; a month needs 22. The others: 12 with readings for part of the day (a day needs 18 hours).
Jun 202512 of 30 days measured; a month needs 21. The others: 18 with readings for part of the day (a day needs 18 hours).
May 20258 of 31 days measured; a month needs 22. The others: 3 with readings for part of the day (a day needs 18 hours).

A day counts once 18 hours of it are measured; a month needs 70% of its days.

Killarney's worst months

MonthUS AQIDays measuredWorld rank
January 2026 5511.1 µg/m³26 of 31985thof 2,617
August 2025 5310.0 µg/m³26 of 311,233rdof 2,901
March 2026 458.1 µg/m³28 of 312,114thof 2,971
February 2026 427.6 µg/m³25 of 282,078thof 2,866
November 2025 376.7 µg/m³23 of 301,959thof 2,715
April 2026 325.8 µg/m³29 of 302,271stof 2,941

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.

Killarney's worst days

DayUS AQI
15 Aug 2025 10135.6 µg/m³
22 Dec 2025 8225.8 µg/m³
5 Jan 2026 8225.8 µg/m³
21 Mar 2026 8024.8 µg/m³
14 Aug 2025 7823.8 µg/m³
25 Feb 2026 7823.4 µg/m³
23 Dec 2025 7723.3 µg/m³
3 Jan 2026 7522.2 µg/m³
4 Jan 2026 7421.3 µg/m³
20 Mar 2026 7320.8 µg/m³

Daily means, the highest since 21 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, Killarney, Ireland, 21 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/killarney/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.

Killarney 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).