SmogRank / Spain / Castille-La Mancha / Toledo

Toledo, month by month

Toledo, Castille-La Mancha has a measured daily mean on 588 days since 1 January 2023. Its worst month was December 2023, at 55 US AQI (11.3 µg/m³), 494th of 2,247 cities on that month's world ranking. Its cleanest was March 2023, at 42 US AQI (7.5 µg/m³).

Every month since 2023

2026too few days for a mean (a year needs 200)12 days measured
Jan5 daysFeb1 dayMarnoneAprnoneMay2 daysJunnoneJulnoneAugnoneSep1 dayOct3 days
2025too few days for a mean (a year needs 256)14 days measured
Jan7 daysFebnoneMar2 daysApr5 daysMaynoneJunnoneJulnoneAugnoneSepnoneOctnoneNovnoneDecnone
2024too few days for a mean (a year needs 257)229 days measured
Jan51#990Feb51#774Mar15 daysApr46#1,281May42#1,482Jun14 daysJul12 daysAug7 daysSepnoneOct11 daysNov48#1,153Dec55#744
202348 for the year333 days measured731st of 1,355 in the world
Jan42#768Feb52#697Mar42#557Apr43#861May44#936Jun51#922Jul55#520Aug49#796Sep43#1,202Oct43#862Nov44#1,143Dec55#494
Each square is a month's mean PM2.5 in US AQI from Toledo'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 Toledo 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

28 months
MonthWhy
Oct 20263 of 12 days measured; a month needs 9. The others: 2 with no readings from the monitor, 7 with readings for part of the day (a day needs 18 hours).
Sep 20261 of 30 days measured; a month needs 21. The others: 29 with readings for part of the day (a day needs 18 hours).
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 20262 of 31 days measured; a month needs 22. The others: 29 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 20261 of 28 days measured; a month needs 20. The others: 27 with under 18 hours of readings or readings that failed our checks.
Jan 20265 of 31 days measured; a month needs 22. The others: 26 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 20255 of 30 days measured; a month needs 21. The others: 25 with under 18 hours of readings or readings that failed our checks.
Mar 20252 of 31 days measured; a month needs 22. The others: 29 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 20257 of 31 days measured; a month needs 22. The others: 24 with under 18 hours of readings or readings that failed our checks.
Oct 202411 of 31 days measured; a month needs 22. The others: 20 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.
Jun 202414 of 30 days measured; a month needs 21. The others: 16 with under 18 hours of readings or readings that failed our checks.
Mar 202415 of 31 days measured; a month needs 22. The others: 16 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.

Toledo's worst months

MonthUS AQIDays measuredWorld rankEpisode
December 2023 5511.3 µg/m³31 of 31494thof 2,247Spain, France and 2 more countries, December 2023 to January 2024
December 2024 5511.2 µg/m³24 of 31744thof 2,616–
July 2023 5511.1 µg/m³28 of 31520thof 1,432–
February 2023 529.5 µg/m³27 of 28697thof 1,129Spain, France and Portugal, February 2023
February 2024 519.3 µg/m³29 of 29774thof 2,486–
June 2023 519.2 µg/m³27 of 30922ndof 1,603–

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.

Toledo's worst days

DayUS AQIEpisode
10 Apr 2023 10235.8 µg/m³Madrid, Andalusia and Castille-La Mancha, Spain, April 2023
29 Dec 2023 8527.3 µg/m³Spain, France and 2 more countries, December 2023 to January 2024
22 Feb 2023 8326.3 µg/m³Spain, France and Portugal, February 2023
28 Jun 2023 8326.3 µg/m³–
31 Oct 2024 7924.2 µg/m³–
30 Dec 2023 7723.0 µg/m³Spain, France and 2 more countries, December 2023 to January 2024
9 Aug 2023 7522.2 µg/m³–
28 Dec 2023 7522.0 µg/m³Spain, France and 2 more countries, December 2023 to January 2024
19 Jul 2023 7521.8 µg/m³–
21 Dec 2024 7119.8 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, Toledo, Castille-La Mancha, Spain, 1 Jan 2023 – 9 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/es/toledo/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.

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

Updated 2026-10-12 23:07 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).