SmogRank / Spain / Madrid / Valdemoro

Valdemoro, month by month

Valdemoro has a measured daily mean on 889 days since 1 January 2023. Its worst month was December 2023, at 74 US AQI (21.6 µg/m³), 136th of 2,247 cities on that month's world ranking. Its cleanest was March 2025, at 31 US AQI (5.6 µg/m³). 2025 averaged 53 US AQI (10.2 µg/m³), against 57 US AQI (12.4 µg/m³) in 2023.

Every month since 2023

2026too few days for a mean (a year needs 200)74 days measured
Jan20 daysFeb8 daysMarnoneAprnoneMaynoneJunnoneJul4 daysAug14 daysSep55#543Oct7 days
202553 for the year296 days measured910th of 2,681 in the world
Jan52#1,064Feb18 daysMar31#2,366Apr32#2,337May43#1,433Jun58#647Jul55#961Aug72#199Sep52#753Oct21 daysNov19 daysDec51#1,517
2024too few days for a mean (a year needs 257)188 days measured
Jan63#441Feb52#710Mar14 daysApr11 daysMay1 dayJun47#1,125Jul14 daysAugnoneSepnoneOct14 daysNov55#698Dec58#589
202357 for the year331 days measured194th of 1,355 in the world
Jan61#262Feb65#260Mar52#306Apr44#823May44#936Jun53#736Jul20 daysAug59#249Sep55#376Oct55#233Nov58#231Dec74#136
Each square is a month's mean PM2.5 in US AQI from Valdemoro'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 Valdemoro 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

20 months
MonthWhy
Oct 20267 of 12 days measured; a month needs 9. The others: 1 with no readings from the monitors, 3 with readings for part of the day (a day needs 18 hours), 1 with under 18 hours of readings or readings that failed our checks.
Aug 202614 of 31 days measured; a month needs 22. The others: 17 with under 18 hours of readings or readings that failed our checks.
Jul 20264 of 31 days measured; a month needs 22. The others: 27 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 20268 of 28 days measured; a month needs 20. The others: 20 with under 18 hours of readings or readings that failed our checks.
Jan 202620 of 31 days measured; a month needs 22. The others: 11 with under 18 hours of readings or readings that failed our checks.
Nov 202519 of 30 days measured; a month needs 21. The others: 11 with under 18 hours of readings or readings that failed our checks.
Oct 202521 of 31 days measured; a month needs 22. The others: 10 with under 18 hours of readings or readings that failed our checks.
Feb 202518 of 28 days measured; a month needs 20. The others: 10 with under 18 hours of readings or readings that failed our checks.
Oct 202414 of 31 days measured; a month needs 22. The others: 17 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 2024No day measured. The others: 31 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.
May 20241 of 31 days measured; a month needs 22. The others: 30 with under 18 hours of readings or readings that failed our checks.
Apr 202411 of 30 days measured; a month needs 21. The others: 19 with under 18 hours of readings or readings that failed our checks.
Mar 202414 of 31 days measured; a month needs 22. The others: 17 with under 18 hours of readings or readings that failed our checks.
Jul 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.

Valdemoro's worst months

MonthUS AQIDays measuredWorld rankEpisode
December 2023 7421.6 µg/m³30 of 31136thof 2,247Spain, France and 2 more countries, December 2023 to January 2024
August 2025 7220.2 µg/m³31 of 31199thof 2,901Spain, Portugal and Andorra, August 2025
February 2023 6516.5 µg/m³27 of 28260thof 1,129Spain, France and Portugal, February 2023
Northern Spain and Portugal, February 2023
January 2024 6315.3 µg/m³31 of 31441stof 2,385Spain, France and 2 more countries, December 2023 to January 2024
January 2023 6114.4 µg/m³24 of 31262ndof 1,261–
August 2023 5913.5 µg/m³23 of 31249thof 1,980Madrid, Castille and León and Castille-La Mancha, Spain, August 2023

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.

Valdemoro's worst days

DayUS AQIEpisode
19 Aug 2025 15967.5 µg/m³Spain, Portugal and Andorra, August 2025
25 Dec 2023 12645.5 µg/m³Spain, France and 2 more countries, December 2023 to January 2024
1 Jan 2023 12444.9 µg/m³–
29 Dec 2023 12344.3 µg/m³Spain, France and 2 more countries, December 2023 to January 2024
28 Dec 2023 12244.1 µg/m³Spain, France and 2 more countries, December 2023 to January 2024
19 Dec 2023 11742.1 µg/m³–
26 Dec 2023 11440.7 µg/m³Spain, France and 2 more countries, December 2023 to January 2024
20 Aug 2025 11340.4 µg/m³Spain, Portugal and Andorra, August 2025
30 Dec 2023 10738.0 µg/m³Spain, France and 2 more countries, December 2023 to January 2024
23 Jan 2024 9935.1 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, Valdemoro, 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/valdemoro/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.

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

Updated 2026-10-12 21:07 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).