SmogRank / Spain / Canary Islands / Telde

Telde, month by month

Telde has a measured daily mean on 833 days since 1 January 2023. Its worst month was December 2024, at 61 US AQI (14.5 µg/m³), 498th of 2,616 cities on that month's world ranking. Its cleanest was September 2023, at 17 US AQI (3.1 µg/m³). 2025 averaged 28 US AQI (5.0 µg/m³), against 38 US AQI (6.8 µg/m³) in 2023.

Every month since 2023

2026too few days for a mean (a year needs 199)3 days measured
Jan3 daysFebnoneMarnoneAprnoneMaynoneJunnoneJulnoneAugnoneSepnoneOctnone
202528 for the year274 days measured2,528th of 2,681 in the world
Jan20 daysFeb29#2,308Mar24#2,586Apr22#2,801May24#2,515Jun20 daysJul15 daysAug9 daysSep38#1,725Oct19#2,525Nov34#2,121Dec23#2,831
2024too few days for a mean (a year needs 257)233 days measured
Jan54#825Feb57#471Mar13 daysApr47#1,233May23#2,425Jun21#2,407Jul13 daysAug6 daysSepnoneOct8 daysNov19 daysDec61#498
202338 for the year323 days measured1,078th of 1,355 in the world
Jan17 daysFeb61#388Mar28#791Apr38#1,075May33#1,310Jun32#1,339Jul22#1,330Aug21 daysSep17#2,148Oct45#738Nov29#1,931Dec55#506
Each square is a month's mean PM2.5 in US AQI from Telde'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 Telde 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

22 months
MonthWhy
Oct 2026No day measured. The others: 11 with no readings from the monitors.
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 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 202419 of 30 days measured; a month needs 21. The others: 11 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 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 202413 of 31 days measured; a month needs 22. The others: 18 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 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 202317 of 31 days measured; a month needs 22. The others: 14 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.

Telde's worst months

MonthUS AQIDays measuredWorld rankEpisode
December 2024 6114.5 µg/m³24 of 31498thof 2,616Canary Islands, Spain, December 2024
February 2023 6114.4 µg/m³28 of 28388thof 1,129Canary Islands, Spain, 20 to 22 February 2023
Canary Islands, Spain, 12 to 15 February 2023
February 2024 5712.1 µg/m³29 of 29471stof 2,486Canary Islands, Spain, 18 to 19 February 2024
Canary Islands, Spain, 14 February 2024and 2 more
December 2023 5511.2 µg/m³31 of 31506thof 2,247Canary Islands, Spain, 16 to 17 December 2023
Canary Islands, Spain, 11 to 13 December 2023
January 2024 5410.6 µg/m³31 of 31825thof 2,385Canary Islands, Spain, 25 to 30 January 2024
Canary Islands, Spain, 23 January 2024
April 2024 478.5 µg/m³29 of 301,233rdof 2,520Canary Islands, Spain, 11 to 12 April 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.

Telde's worst days

DayUS AQIEpisode
17 Dec 2024 16880.0 µg/m³Canary Islands, Spain, December 2024
13 Feb 2023 16372.2 µg/m³Canary Islands, Spain, 12 to 15 February 2023
14 Feb 2023 16372.1 µg/m³Canary Islands, Spain, 12 to 15 February 2023
12 Dec 2023 16271.3 µg/m³Canary Islands, Spain, 11 to 13 December 2023
5 Dec 2024 15967.0 µg/m³–
24 Nov 2025 15460.4 µg/m³Canary Islands, Spain, November 2025
13 Dec 2023 13649.6 µg/m³Canary Islands, Spain, 11 to 13 December 2023
12 Feb 2023 11741.8 µg/m³Canary Islands, Spain, 12 to 15 February 2023
14 Feb 2024 9331.9 µg/m³Canary Islands, Spain, 14 February 2024
28 Nov 2024 9331.4 µg/m³–

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, Telde, 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/telde/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.

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

Updated 2026-10-12 17:07 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).