SmogRank / Spain / Castille-La Mancha / Manzanares

Manzanares, month by month

Manzanares has a measured daily mean on 357 days since 19 March 2025. Its worst month was August 2025, at 74 US AQI (21.2 µg/m³), 182nd of 2,901 cities on that month's world ranking. Its cleanest was April 2025, at 29 US AQI (5.3 µg/m³).

Every month since 2025

2026too few days for a mean (a year needs 200)123 days measured

Jan34#2,081Feb7 daysMarnoneAprnoneMay2 daysJun7 daysJul16 daysAug54#718 Sep48#847Oct7 days

2025too few days for a mean (a year needs 256)234 days measured

JanFebMar7 daysApr29#2,479 May37#1,734 Jun57#792 Jul52#1,310 Aug74#182 Sep46#1,154Oct18 daysNov33#2,192 Dec39#2,127

Each square is a month's mean PM2.5 in US AQI from Manzanares'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 Manzanares 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

9 months

Month	Why
Oct 2026	7 of 12 days measured; a month needs 9. The others: 2 with no readings from the monitor, 3 with readings for part of the day (a day needs 18 hours).
Jul 2026	16 of 31 days measured; a month needs 22. The others: 15 with under 18 hours of readings or readings that failed our checks.
Jun 2026	7 of 30 days measured; a month needs 21. The others: 23 with under 18 hours of readings or readings that failed our checks.
May 2026	2 of 31 days measured; a month needs 22. The others: 29 with under 18 hours of readings or readings that failed our checks.
Apr 2026	No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Mar 2026	No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Feb 2026	7 of 28 days measured; a month needs 20. The others: 21 with under 18 hours of readings or readings that failed our checks.
Oct 2025	18 of 31 days measured; a month needs 22. The others: 13 with under 18 hours of readings or readings that failed our checks.
Mar 2025	7 of 31 days measured; a month needs 22. The others: 6 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.

Manzanares's worst months

Month	US AQI	Days measured	World rank	Episode
August 2025	7421.2 µg/m³	31 of 31	182ndof 2,901	Northern Spain, August 2025 Spain, Portugal and Andorra, August 2025
June 2025	5712.1 µg/m³	21 of 30	792ndof 2,508	–
August 2026	5410.9 µg/m³	29 of 31	718thof 2,896	–
July 2025	529.8 µg/m³	31 of 31	1,310thof 2,889	–
September 2026	488.7 µg/m³	30 of 30	847thof 2,981	–
September 2025	468.2 µg/m³	27 of 30	1,154thof 3,104	–

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.

Manzanares's worst days

Day	US AQI	Episode
19 Aug 2025	16169.1 µg/m³	Spain, Portugal and Andorra, August 2025
20 Aug 2025	15764.5 µg/m³	Spain, Portugal and Andorra, August 2025
21 Aug 2025	11139.7 µg/m³	Spain, Portugal and Andorra, August 2025
27 Aug 2025	10838.3 µg/m³	Northern Spain, August 2025
26 Jul 2026	10336.2 µg/m³	–
26 Aug 2025	9733.7 µg/m³	Northern Spain, August 2025
22 Aug 2025	9331.6 µg/m³	Spain, Portugal and Andorra, August 2025
12 Aug 2026	9231.2 µg/m³	–
11 Aug 2026	9030.3 µg/m³	–
28 Jul 2026	8527.5 µg/m³	North-eastern Spain, July 2026

Daily means, the highest since 19 Mar 2025; 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, Manzanares, Spain, 19 Mar 2025 – 9 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/es/manzanares/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.

Manzanares 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).