SmogRank / Ireland / Connacht / Ballinasloe

Ballinasloe, month by month

Ballinasloe has a measured daily mean on 101 days since 24 May 2025.

Every month since 2025

2026too few days for a mean (a year needs 200)61 days measured
JannoneFebnoneMar21 daysApr3 daysMay10 daysJun9 daysJul5 daysAug1 daySep6 daysOct6 days
2025too few days for a mean (a year needs 256)40 days measured
JanFebMarAprMay7 daysJun2 daysJul8 daysAug20 daysSep3 daysOctnoneNovnoneDecnone
Each square is a month's mean PM2.5 in US AQI from Ballinasloe'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 Ballinasloe marked; each year, the year's.
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

18 months
MonthWhy
Oct 20266 of 12 days measured; a month needs 9. The others: 2 with no readings from the monitor, 3 with readings for part of the day (a day needs 18 hours), 1 with under 18 hours of readings or readings that failed our checks.
Sep 20266 of 30 days measured; a month needs 21. The others: 24 with readings for part of the day (a day needs 18 hours).
Aug 20261 of 31 days measured; a month needs 22. The others: 30 with readings for part of the day (a day needs 18 hours).
Jul 20265 of 31 days measured; a month needs 22. The others: 3 with no readings from the monitor, 23 with readings for part of the day (a day needs 18 hours).
Jun 20269 of 30 days measured; a month needs 21. The others: 21 with readings for part of the day (a day needs 18 hours).
May 202610 of 31 days measured; a month needs 22. The others: 21 with readings for part of the day (a day needs 18 hours).
Apr 20263 of 30 days measured; a month needs 21. The others: 27 with readings for part of the day (a day needs 18 hours).
Mar 202621 of 31 days measured; a month needs 22. The others: 10 with readings for part of the day (a day needs 18 hours).
Feb 2026No day measured. The others: 26 with no readings from the monitor, 2 with readings for part of the day (a day needs 18 hours).
Jan 2026No day measured. The others: 31 with no readings from the monitor.
Dec 2025No day measured. The others: 31 with no readings from the monitor.
Nov 2025No day measured. The others: 30 with no readings from the monitor.
Oct 2025No day measured. The others: 17 with no readings from the monitor, 14 with readings for part of the day (a day needs 18 hours).
Sep 20253 of 30 days measured; a month needs 21. The others: 1 with no readings from the monitor, 26 with readings for part of the day (a day needs 18 hours).
Aug 202520 of 31 days measured; a month needs 22. The others: 11 with readings for part of the day (a day needs 18 hours).
Jul 20258 of 31 days measured; a month needs 22. The others: 10 with no readings from the monitor, 13 with readings for part of the day (a day needs 18 hours).
Jun 20252 of 30 days measured; a month needs 21. The others: 13 with no readings from the monitor, 15 with readings for part of the day (a day needs 18 hours).
May 20257 of 31 days measured; a month needs 22. The others: 1 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.

Ballinasloe's worst days

DayUS AQI
21 Mar 2026 8728.4 µg/m³
20 Mar 2026 8125.3 µg/m³
24 Jul 2025 6918.7 µg/m³
4 Mar 2026 6818.1 µg/m³
12 Aug 2025 6415.9 µg/m³
30 Mar 2026 6014.1 µg/m³
30 Apr 2026 5813.0 µg/m³
1 May 2026 5712.2 µg/m³
24 Jun 2026 5511.2 µg/m³
16 Aug 2025 5511.1 µg/m³

Daily means, the highest since 24 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, Ballinasloe, Ireland, 24 May 2025 – 12 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/ie/ballinasloe/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.

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

Updated 2026-10-13 05:07 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).