SmogRank / Ireland / Munster / Waterford
Waterford, month by month
Waterford has a measured daily mean on 565 days since 29 January 2024. Its worst month was February 2025, at 63 US AQI (15.8 µg/m³), 828th of 2,633 cities on that month's world ranking. Its cleanest was July 2024, at 21 US AQI (3.8 µg/m³).
Every month since 2024
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
20 months
| Month | Why |
|---|---|
| Jun 2026 | 20 of 30 days measured; a month needs 21. The others: 10 with under 18 hours of readings or readings that failed our checks. |
| Mar 2026 | 4 of 31 days measured; a month needs 22. The others: 27 with under 18 hours of readings or readings that failed our checks. |
| Feb 2026 | 2 of 28 days measured; a month needs 20. The others: 26 with under 18 hours of readings or readings that failed our checks. |
| Jan 2026 | 5 of 31 days measured; a month needs 22. The others: 26 with under 18 hours of readings or readings that failed our checks. |
| Dec 2025 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Nov 2025 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| Oct 2025 | 9 of 31 days measured; a month needs 22. The others: 22 with under 18 hours of readings or readings that failed our checks. |
| Sep 2025 | 13 of 30 days measured; a month needs 21. The others: 17 with under 18 hours of readings or readings that failed our checks. |
| Jul 2025 | 17 of 31 days measured; a month needs 22. The others: 14 with under 18 hours of readings or readings that failed our checks. |
| Jun 2025 | 10 of 30 days measured; a month needs 21. The others: 20 with under 18 hours of readings or readings that failed our checks. |
| May 2025 | 15 of 31 days measured; a month needs 22. The others: 16 with under 18 hours of readings or readings that failed our checks. |
| Apr 2025 | 14 of 30 days measured; a month needs 21. The others: 16 with under 18 hours of readings or readings that failed our checks. |
| Mar 2025 | 19 of 31 days measured; a month needs 22. The others: 12 with under 18 hours of readings or readings that failed our checks. |
| Dec 2024 | 16 of 31 days measured; a month needs 22. The others: 15 with under 18 hours of readings or readings that failed our checks. |
| Oct 2024 | 10 of 31 days measured; a month needs 22. The others: 21 with under 18 hours of readings or readings that failed our checks. |
| Sep 2024 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| Aug 2024 | 11 of 31 days measured; a month needs 22. The others: 20 with under 18 hours of readings or readings that failed our checks. |
| Mar 2024 | 15 of 31 days measured; a month needs 22. The others: 16 with under 18 hours of readings or readings that failed our checks. |
| Feb 2024 | 17 of 29 days measured; a month needs 21. The others: 1 missing from OpenAQ's archive, 11 with under 18 hours of readings or readings that failed our checks. |
| Jan 2024 | 3 of 31 days measured; a month needs 22. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Waterford's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| February 2025 | 6315.8 µg/m³ | 828thof 2,633 | – |
| January 2025 | 5712.4 µg/m³ | 684thof 2,474 | Western Europe, January 2025 |
| November 2024 | 529.4 µg/m³ | 974thof 2,624 | – |
| April 2026 | 478.4 µg/m³ | 1,438thof 2,941 | – |
| July 2026 | 478.4 µg/m³ | 1,768thof 2,784 | – |
| May 2024 | 437.7 µg/m³ | 1,433rdof 2,684 | – |
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.
Waterford's worst days
| Day | US AQI | Episode |
|---|---|---|
| 10 Mar 2025 | 11943.0 µg/m³ | Germany, Poland and 25 more countries, March 2025 |
| 9 Mar 2024 | 10035.4 µg/m³ | – |
| 24 Jul 2026 | 9231.0 µg/m³ | – |
| 8 Mar 2024 | 9029.8 µg/m³ | – |
| 12 Jan 2025 | 8828.9 µg/m³ | Western Europe, January 2025 |
| 9 Jan 2025 | 8527.4 µg/m³ | Western Europe, January 2025 |
| 12 May 2024 | 8125.4 µg/m³ | – |
| 17 Feb 2025 | 8024.6 µg/m³ | – |
| 18 Feb 2025 | 8024.6 µg/m³ | – |
| 9 Feb 2025 | 7924.2 µg/m³ | – |
Daily means, the highest since 29 Jan 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, Waterford, Ireland, 29 Jan 2024 – 11 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/ie/waterford/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.
Waterford 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).