SmogRank / Spain / Canary Islands / Lomo de Arico

Lomo de Arico, month by month

Lomo de Arico has a measured daily mean on 717 days since 1 January 2023. Its worst month was December 2023, at 65 US AQI (16.7 µg/m³), 239th of 2,247 cities on that month's world ranking. Its cleanest was December 2025, at 17 US AQI (3.1 µg/m³).

Every month since 2023

2026too few days for a mean (a year needs 200)3 days measured
Jan3 daysFebnoneMarnoneAprnoneMaynoneJunnoneJulnoneAugnoneSepnoneOctnone
202526 for the year268 days measured2,574th of 2,681 in the world
Jan20 daysFeb29#2,330Mar24#2,586Apr22#2,783May23#2,545Jun19 daysJul15 daysAug9 daysSep44#1,244Oct18#2,554Nov27#2,433Dec17#2,944
2024too few days for a mean (a year needs 257)200 days measured
Jan55#786Feb61#371Mar13 daysApr53#965May21#2,478Jun20#2,429Jul14 daysAug4 daysSepnoneOct1 dayNovnoneDec52#908
2023too few days for a mean (a year needs 256)246 days measured
Jan7 daysFeb3 daysMar9 daysApr56#263May51#604Jun42#1,156Jul44#855Aug19 daysSep44#1,165Oct58#146Nov58#251Dec65#239
Each square is a month's mean PM2.5 in US AQI from Lomo de Arico'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 Lomo de Arico 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

24 months
MonthWhy
Oct 2026No day measured. The others: 11 with no readings from the monitors, 1 with under 18 hours of readings or readings that failed our checks.
Sep 2026No day measured. The others: 30 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 20263 of 31 days measured; a month needs 22. The others: 28 with under 18 hours of readings or readings that failed our checks.
Aug 20259 of 31 days measured; a month needs 22. The others: 22 with under 18 hours of readings or readings that failed our checks.
Jul 202515 of 31 days measured; a month needs 22. The others: 16 with under 18 hours of readings or readings that failed our checks.
Jun 202519 of 30 days measured; a month needs 21. The others: 11 with under 18 hours of readings or readings that failed our checks.
Jan 202520 of 31 days measured; a month needs 22. The others: 11 with under 18 hours of readings or readings that failed our checks.
Nov 2024No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Oct 20241 of 31 days measured; a month needs 22. The others: 30 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 20244 of 31 days measured; a month needs 22. The others: 27 with under 18 hours of readings or readings that failed our checks.
Jul 202414 of 31 days measured; a month needs 22. The others: 17 with under 18 hours of readings or readings that failed our checks.
Mar 202413 of 31 days measured; a month needs 22. The others: 18 with under 18 hours of readings or readings that failed our checks.
Aug 202319 of 31 days measured; a month needs 22. The others: 12 with under 18 hours of readings or readings that failed our checks.
Mar 20239 of 31 days measured; a month needs 22. The others: 20 missing from OpenAQ's archive, 2 with under 18 hours of readings or readings that failed our checks.
Feb 20233 of 28 days measured; a month needs 20. The others: 25 missing from OpenAQ's archive.
Jan 20237 of 31 days measured; a month needs 22. The others: 7 missing from OpenAQ's archive, 17 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.

Lomo de Arico's worst months

MonthUS AQIDays measuredWorld rankEpisode
December 2023 6516.7 µg/m³29 of 31239thof 2,247Canary Islands, Spain, 16 to 17 December 2023
Canary Islands, Spain, 11 to 13 December 2023
February 2024 6114.2 µg/m³28 of 29371stof 2,486Canary Islands, Spain, 18 to 19 February 2024
Canary Islands, Spain, 14 February 2024and 1 more
October 2023 5813.1 µg/m³24 of 31146thof 2,012Canary Islands, Spain, October 2023
November 2023 5812.6 µg/m³30 of 30251stof 2,243–
April 2023 5612.0 µg/m³24 of 30263rdof 1,622Canary Islands, Spain, April 2023
January 2024 5511.0 µg/m³29 of 31786thof 2,385Canary Islands, Spain, 25 to 30 January 2024

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.

Lomo de Arico's worst days

DayUS AQIEpisode
13 Dec 2023 16575.0 µg/m³Canary Islands, Spain, 11 to 13 December 2023
14 Feb 2023 16270.9 µg/m³Canary Islands, Spain, 12 to 15 February 2023
17 Dec 2024 15865.6 µg/m³Canary Islands, Spain, December 2024
11 Apr 2024 15561.8 µg/m³Canary Islands, Spain, 11 to 12 April 2024
14 Feb 2024 13951.0 µg/m³Canary Islands, Spain, 14 February 2024
29 Jan 2024 13047.4 µg/m³Canary Islands, Spain, 25 to 30 January 2024
17 Sept 2025 12846.3 µg/m³Canary Islands, Spain, September 2025
12 Dec 2023 12244.1 µg/m³Canary Islands, Spain, 11 to 13 December 2023
8 Feb 2024 12244.0 µg/m³Canary Islands, Spain, 8 to 9 February 2024
24 Nov 2025 11240.0 µg/m³Canary Islands, Spain, November 2025

Daily means, the highest since 1 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, Lomo de Arico, Spain, 1 Jan 2023 – 3 Jan 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/es/lomo-de-arico/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.

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

Updated 2026-10-13 03:07 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).