SmogRank / Spain / Valencia / l'Alcora

l'Alcora, month by month

l'Alcora has a measured daily mean on 546 days since 1 January 2023. Its worst month was October 2023, at 43 US AQI (7.7 µg/m³), 862nd of 2,012 cities on that month's world ranking. Its cleanest was January 2025, at 23 US AQI (4.1 µg/m³).

Every month since 2023

2026too few days for a mean (a year needs 200)12 days measured
Jan5 daysFebnoneMarnoneAprnoneMaynoneJunnoneJulnoneAugnoneSepnoneOct7 days
2025too few days for a mean (a year needs 256)115 days measured
Jan23#2,359Feb5 daysMar3 daysApr14 daysMay18 daysJun5 daysJulnoneAug1 daySep14 daysOct19 daysNov10 daysDecnone
2024too few days for a mean (a year needs 257)192 days measured
Jan38#1,588Feb37#1,575Mar10 daysApr3 daysMay32#2,105Jun29#2,216Jul6 daysAug5 daysSepnoneOct11 daysNov20 daysDec32#2,139
2023too few days for a mean (a year needs 256)227 days measured
Jan14 daysFeb2 daysMar6 daysApr41#957May28#1,430Jun34#1,298Jul17 daysAug6 daysSep18 daysOct43#862Nov26#2,030Dec24#2,108
Each square is a month's mean PM2.5 in US AQI from l'Alcora'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 l'Alcora 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

34 months
MonthWhy
Oct 20267 of 12 days measured; a month needs 9. The others: 1 with no readings from the monitor, 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.
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 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 202510 of 30 days measured; a month needs 21. The others: 20 with under 18 hours of readings or readings that failed our checks.
Oct 202519 of 31 days measured; a month needs 22. The others: 12 with under 18 hours of readings or readings that failed our checks.
Sep 202514 of 30 days measured; a month needs 21. The others: 16 with under 18 hours of readings or readings that failed our checks.
Aug 20251 of 31 days measured; a month needs 22. The others: 30 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 20255 of 30 days measured; a month needs 21. The others: 25 with under 18 hours of readings or readings that failed our checks.
May 202518 of 31 days measured; a month needs 22. The others: 13 with under 18 hours of readings or readings that failed our checks.
Apr 202514 of 30 days measured; a month needs 21. The others: 16 with under 18 hours of readings or readings that failed our checks.
Mar 20253 of 31 days measured; a month needs 22. The others: 28 with under 18 hours of readings or readings that failed our checks.
Feb 20255 of 28 days measured; a month needs 20. The others: 23 with under 18 hours of readings or readings that failed our checks.
Nov 202420 of 30 days measured; a month needs 21. The others: 10 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 20245 of 31 days measured; a month needs 22. The others: 26 with under 18 hours of readings or readings that failed our checks.
Jul 20246 of 31 days measured; a month needs 22. The others: 25 with under 18 hours of readings or readings that failed our checks.
Apr 20243 of 30 days measured; a month needs 21. The others: 27 with under 18 hours of readings or readings that failed our checks.
Mar 202410 of 31 days measured; a month needs 22. The others: 21 with under 18 hours of readings or readings that failed our checks.
Sep 202318 of 30 days measured; a month needs 21. The others: 12 with under 18 hours of readings or readings that failed our checks.
Aug 20236 of 31 days measured; a month needs 22. The others: 25 with under 18 hours of readings or readings that failed our checks.
Jul 202317 of 31 days measured; a month needs 22. The others: 1 missing from OpenAQ's archive, 13 with under 18 hours of readings or readings that failed our checks.
Mar 20236 of 31 days measured; a month needs 22. The others: 20 missing from OpenAQ's archive, 5 with under 18 hours of readings or readings that failed our checks.
Feb 20232 of 28 days measured; a month needs 20. The others: 25 missing from OpenAQ's archive, 1 with under 18 hours of readings or readings that failed our checks.
Jan 202314 of 31 days measured; a month needs 22. The others: 7 missing from OpenAQ's archive, 10 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.

l'Alcora's worst months

MonthUS AQIDays measuredWorld rank
October 2023 437.7 µg/m³23 of 31862ndof 2,012
April 2023 417.4 µg/m³27 of 30957thof 1,622
January 2024 386.8 µg/m³30 of 311,588thof 2,385
February 2024 376.7 µg/m³27 of 291,575thof 2,486
June 2023 346.2 µg/m³28 of 301,298thof 1,603
May 2024 325.7 µg/m³30 of 312,105thof 2,684

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.

l'Alcora's worst days

DayUS AQI
16 Apr 2024 7723.0 µg/m³
11 Jul 2023 7220.2 µg/m³
12 Jul 2023 7120.1 µg/m³
24 Mar 2023 7019.3 µg/m³
30 Oct 2024 6617.4 µg/m³
18 Jul 2023 6315.8 µg/m³
6 Feb 2024 6315.6 µg/m³
5 Sept 2023 6215.2 µg/m³
25 Jan 2024 6215.1 µg/m³
20 Aug 2023 6214.8 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, l'Alcora, 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/l-alcora/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.

l'Alcora 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).