SmogRank / Ireland / Leinster / Navan

Navan, month by month

Navan has a measured daily mean on 226 days since 26 May 2025. Its worst month was April 2026, at 39 US AQI (7.0 µg/m³), 1,893rd of 2,941 cities on that month's world ranking. Its cleanest was September 2026, at 28 US AQI (5.0 µg/m³).

Every month since 2025

2026too few days for a mean (a year needs 199)175 days measured
Jan4 daysFebnoneMar3 daysApr39#1,893May29#2,220Jun20 daysJul34#2,374Aug38#2,142Sep28#2,339Oct27#2,192
2025too few days for a mean (a year needs 256)51 days measured
JanFebMarAprMay3 daysJun7 daysJul12 daysAug20 daysSep5 daysOct4 daysNovnoneDecnone
Each square is a month's mean PM2.5 in US AQI from Navan'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 Navan 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

12 months
MonthWhy
Jun 202620 of 30 days measured; a month needs 21. The others: 10 with under 18 hours of readings or readings that failed our checks.
Mar 20263 of 31 days measured; a month needs 22. The others: 28 with under 18 hours of readings or readings that failed our checks.
Feb 2026No day measured. The others: 28 with under 18 hours of readings or readings that failed our checks.
Jan 20264 of 31 days measured; a month needs 22. The others: 27 with under 18 hours of readings or readings that failed our checks.
Dec 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Nov 2025No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Oct 20254 of 31 days measured; a month needs 22. The others: 27 with under 18 hours of readings or readings that failed our checks.
Sep 20255 of 30 days measured; a month needs 21. The others: 25 with under 18 hours of readings or readings that failed our checks.
Aug 202520 of 31 days measured; a month needs 22. The others: 11 with under 18 hours of readings or readings that failed our checks.
Jul 202512 of 31 days measured; a month needs 22. The others: 19 with under 18 hours of readings or readings that failed our checks.
Jun 20257 of 30 days measured; a month needs 21. The others: 23 with under 18 hours of readings or readings that failed our checks.
May 20253 of 31 days measured; a month needs 22. The others: 3 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.

Navan's worst months

MonthUS AQIDays measuredWorld rank
April 2026 397.0 µg/m³29 of 301,893rdof 2,941
August 2026 386.9 µg/m³27 of 312,142ndof 2,896
July 2026 346.2 µg/m³29 of 312,374thof 2,784
May 2026 295.3 µg/m³28 of 312,220thof 2,874
September 2026 285.0 µg/m³26 of 302,339thof 2,981

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.

Navan's worst days

DayUS AQI
1 Aug 2026 7421.6 µg/m³
24 Jul 2025 7421.3 µg/m³
13 Aug 2025 7220.3 µg/m³
27 Aug 2026 7120.0 µg/m³
15 Jul 2026 6717.8 µg/m³
16 Jul 2026 6617.1 µg/m³
23 Apr 2026 6315.5 µg/m³
30 Mar 2026 6114.5 µg/m³
31 Jul 2026 6014.1 µg/m³
26 Aug 2026 5913.6 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, Navan, 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/navan/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.

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

Updated 2026-10-12 19:07 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).