SmogRank / Spain / Galicia / Viveiro

Viveiro, month by month

Viveiro has a measured daily mean on 484 days since 5 January 2023. Its worst month was February 2023, at 53 US AQI (10.0 µg/m³), 666th of 1,129 cities on that month's world ranking. Its cleanest was September 2023, at 16 US AQI (2.9 µg/m³).

Every month since 2023

2026too few days for a mean (a year needs 199)1 day measured
JannoneFebnoneMarnoneAprnoneMaynoneJunnoneJulnoneAugnoneSep1 dayOctnone
2025too few days for a mean (a year needs 256)6 days measured
Jan5 daysFebnoneMarnoneApr1 dayMaynoneJunnoneJulnoneAugnoneSepnoneOctnoneNovnoneDecnone
2024too few days for a mean (a year needs 257)163 days measured
Jan37#1,623Feb50#839Mar11 daysApr33#1,711May28#2,272Jun7 daysJul6 daysAug6 daysSepnoneOctnoneNov3 daysDec20 days
202333 for the year314 days measured1,184th of 1,355 in the world
Jan20 daysFeb53#666Mar38#632Apr33#1,221May43#975Jun32#1,339Jul16#1,400Aug21 daysSep16#2,157Oct21 daysNov32#1,778Dec35#1,743
Each square is a month's mean PM2.5 in US AQI from Viveiro'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 Viveiro marked; each year, the year's.
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

33 months
MonthWhy
Oct 2026No day measured. The others: 8 with no readings from the monitors, 3 with readings for part of the day (a day needs 18 hours).
Sep 20261 of 30 days measured; a month needs 21. The others: 1 with no readings from the monitors, 27 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.
Aug 2026No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Jul 2026No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Jun 2026No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
May 2026No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Apr 2026No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Mar 2026No day measured. The others: 31 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 2026No day measured. The others: 31 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 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Sep 2025No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Aug 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Jul 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Jun 2025No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
May 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Apr 20251 of 30 days measured; a month needs 21. The others: 29 with under 18 hours of readings or readings that failed our checks.
Mar 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Feb 2025No day measured. The others: 28 with under 18 hours of readings or readings that failed our checks.
Jan 20255 of 31 days measured; a month needs 22. The others: 26 with under 18 hours of readings or readings that failed our checks.
Dec 202420 of 31 days measured; a month needs 22. The others: 11 with under 18 hours of readings or readings that failed our checks.
Nov 20243 of 30 days measured; a month needs 21. The others: 27 with under 18 hours of readings or readings that failed our checks.
Oct 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Sep 2024No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Aug 20246 of 31 days measured; a month needs 22. The others: 25 with under 18 hours of readings or readings that failed our checks.
Jul 20246 of 31 days measured; a month needs 22. The others: 25 with under 18 hours of readings or readings that failed our checks.
Jun 20247 of 30 days measured; a month needs 21. The others: 23 with under 18 hours of readings or readings that failed our checks.
Mar 202411 of 31 days measured; a month needs 22. The others: 20 with under 18 hours of readings or readings that failed our checks.
Oct 202321 of 31 days measured; a month needs 22. The others: 10 with under 18 hours of readings or readings that failed our checks.
Aug 202321 of 31 days measured; a month needs 22. The others: 10 with under 18 hours of readings or readings that failed our checks.
Jan 202320 of 31 days measured; a month needs 22. The others: 7 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.

Viveiro's worst months

MonthUS AQIDays measuredWorld rankEpisode
February 2023 5310.0 µg/m³28 of 28666thof 1,129Spain, France and Portugal, February 2023
February 2024 509.0 µg/m³29 of 29839thof 2,486–
May 2023 437.8 µg/m³31 of 31975thof 1,600–
March 2023 386.9 µg/m³31 of 31632ndof 911–
January 2024 376.7 µg/m³31 of 311,623rdof 2,385–
December 2023 356.3 µg/m³31 of 311,743rdof 2,247–

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.

Viveiro's worst days

DayUS AQIEpisode
20 Feb 2023 8728.6 µg/m³Spain, France and Portugal, February 2023
21 Feb 2023 7521.8 µg/m³Spain, France and Portugal, February 2023
18 Feb 2023 7320.8 µg/m³Spain, France and Portugal, February 2023
5 Mar 2023 6717.8 µg/m³–
7 Feb 2024 6717.6 µg/m³–
8 Jun 2023 6617.3 µg/m³–
6 Mar 2023 6416.3 µg/m³–
11 Dec 2023 6315.5 µg/m³–
26 Jan 2024 6214.9 µg/m³–
5 Feb 2024 6214.8 µg/m³–

Daily means, the highest since 5 Jan 2023; 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, Viveiro, Spain, 5 Jan 2023 – 24 Sep 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/es/viveiro/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.

Viveiro 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).