SmogRank / Spain / Canary Islands / Arucas

Arucas, month by month

Arucas has a measured daily mean on 805 days since 1 January 2023. Its worst month was February 2023, at 68 US AQI (18.2 µg/m³), 180th of 1,129 cities on that month's world ranking. Its cleanest was March 2025, at 35 US AQI (6.3 µg/m³). 2025 averaged 45 US AQI (8.1 µg/m³), against 54 US AQI (10.6 µg/m³) in 2023.

Every month since 2023

2026too few days for a mean (a year needs 199)3 days measured
Jan3 daysFebnoneMarnoneAprnoneMaynoneJunnoneJulnoneAugnoneSepnoneOctnone
202545 for the year262 days measured1,722nd of 2,681 in the world
Jan20 daysFeb45#1,556Mar35#2,227Apr41#1,916May42#1,478Jun20 daysJul14 daysAug5 daysSep53#690Oct39#1,173Nov54#897Dec52#1,458
2024too few days for a mean (a year needs 257)227 days measured
Jan55#767Feb58#419Mar13 daysApr53#965May47#1,130Jun37#1,836Jul12 daysAug7 daysSepnoneOct8 daysNov17 daysDec53#874
202354 for the year313 days measured393rd of 1,355 in the world
Jan57#335Feb68#180Mar47#421Apr53#396May52#502Jun42#1,166Jul51#736Aug20 daysSep20 daysOct21 daysNov46#1,055Dec59#338
Each square is a month's mean PM2.5 in US AQI from Arucas'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 Arucas 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

23 months
MonthWhy
Oct 2026No day measured. The others: 11 with no readings from the monitor.
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 20255 of 31 days measured; a month needs 22. The others: 26 with under 18 hours of readings or readings that failed our checks.
Jul 202514 of 31 days measured; a month needs 22. The others: 17 with under 18 hours of readings or readings that failed our checks.
Jun 202520 of 30 days measured; a month needs 21. The others: 10 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 202417 of 30 days measured; a month needs 21. The others: 13 with under 18 hours of readings or readings that failed our checks.
Oct 20248 of 31 days measured; a month needs 22. The others: 23 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 20247 of 31 days measured; a month needs 22. The others: 24 with under 18 hours of readings or readings that failed our checks.
Jul 202412 of 31 days measured; a month needs 22. The others: 19 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.
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.
Sep 202320 of 30 days measured; a month needs 21. The others: 10 with under 18 hours of readings or readings that failed our checks.
Aug 202320 of 31 days measured; a month needs 22. The others: 11 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.

Arucas's worst months

MonthUS AQIDays measuredWorld rankEpisode
February 2023 6818.2 µg/m³28 of 28180thof 1,129Canary Islands, Spain, 20 to 22 February 2023
Canary Islands, Spain, 12 to 15 February 2023
December 2023 5913.6 µg/m³30 of 31338thof 2,247Canary Islands, Spain, 16 to 17 December 2023
Canary Islands, Spain, 11 to 13 December 2023
February 2024 5812.8 µg/m³29 of 29419thof 2,486Canary Islands, Spain, 18 to 19 February 2024
Canary Islands, Spain, 14 February 2024and 1 more
January 2023 5712.1 µg/m³24 of 31335thof 1,261–
January 2024 5511.3 µg/m³31 of 31767thof 2,385Canary Islands, Spain, 25 to 30 January 2024
Canary Islands, Spain, 23 January 2024
November 2025 5410.9 µg/m³23 of 30897thof 2,715Canary Islands, Spain, November 2025

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.

Arucas's worst days

DayUS AQIEpisode
14 Feb 2023 17286.1 µg/m³Canary Islands, Spain, 12 to 15 February 2023
13 Feb 2023 16575.1 µg/m³Canary Islands, Spain, 12 to 15 February 2023
13 Dec 2023 14252.0 µg/m³Canary Islands, Spain, 11 to 13 December 2023
17 Dec 2024 13047.2 µg/m³Canary Islands, Spain, December 2024
12 Dec 2023 10838.5 µg/m³Canary Islands, Spain, 11 to 13 December 2023
12 Feb 2023 10336.2 µg/m³Canary Islands, Spain, 12 to 15 February 2023
16 Dec 2023 9934.8 µg/m³Canary Islands, Spain, 16 to 17 December 2023
17 Sept 2025 9733.6 µg/m³Canary Islands, Spain, September 2025
24 Nov 2025 9633.5 µg/m³Canary Islands, Spain, November 2025
17 Dec 2023 9331.6 µg/m³Canary Islands, Spain, 16 to 17 December 2023

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, Arucas, 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/arucas/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.

Arucas 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).