SmogRank / Portugal / Setúbal / Amora

Amora, month by month

Amora has a measured daily mean on 420 days since 11 January 2023. Its worst month was February 2023, at 65 US AQI (16.8 µg/m³), 244th of 1,129 cities on that month's world ranking. Its cleanest was September 2023, at 24 US AQI (4.4 µg/m³).

Every month since 2023

2026too few days for a mean (a year needs 199)21 days measured
Jan5 daysFeb1 dayMarnoneAprnoneMaynoneJunnoneJulnoneAugnoneSep8 daysOct7 days
2025too few days for a mean (a year needs 256)2 days measured
JannoneFebnoneMarnoneAprnoneMaynoneJunnoneJulnoneAug2 daysSepnoneOctnoneNovnoneDecnone
2024too few days for a mean (a year needs 257)85 days measured
Jan63#441Feb55#523Mar8 daysApr4 daysMay4 daysJun8 daysJul2 daysAug2 daysSepnoneOctnoneNovnoneDecnone
202349 for the year312 days measured705th of 1,355 in the world
Jan7 daysFeb65#244Mar48#406Apr37#1,107May37#1,187Jun40#1,199Jul28#1,216Aug34#1,581Sep24#2,068Oct44#793Nov52#643Dec63#265
Each square is a month's mean PM2.5 in US AQI from Amora'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 Amora 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

33 months
MonthWhy
Oct 20267 of 11 days measured; a month needs 8. The others: 2 with readings for part of the day (a day needs 18 hours), 2 with readings left out by our checks.
Sep 20268 of 30 days measured; a month needs 21. The others: 4 with readings for part of the day (a day needs 18 hours), 18 with readings left out by 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 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 20252 of 31 days measured; a month needs 22. The others: 29 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 2025No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Mar 2025No day measured. The others: 31 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 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Dec 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Nov 2024No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Oct 2024No day measured. The others: 31 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 20242 of 31 days measured; a month needs 22. The others: 29 with under 18 hours of readings or readings that failed our checks.
Jul 20242 of 31 days measured; a month needs 22. The others: 29 with under 18 hours of readings or readings that failed our checks.
Jun 20248 of 30 days measured; a month needs 21. The others: 22 with under 18 hours of readings or readings that failed our checks.
May 20244 of 31 days measured; a month needs 22. The others: 27 with under 18 hours of readings or readings that failed our checks.
Apr 20244 of 30 days measured; a month needs 21. The others: 26 with under 18 hours of readings or readings that failed our checks.
Mar 20248 of 31 days measured; a month needs 22. The others: 23 with under 18 hours of readings or readings that failed our checks.
Jan 20237 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.

Amora's worst months

MonthUS AQIDays measuredWorld rankEpisode
February 2023 6516.8 µg/m³28 of 28244thof 1,129Northern Spain and Portugal, February 2023
December 2023 6315.6 µg/m³29 of 31265thof 2,247Spain, France and 2 more countries, December 2023 to January 2024
January 2024 6315.3 µg/m³31 of 31441stof 2,385Spain, France and 2 more countries, December 2023 to January 2024
February 2024 5511.4 µg/m³26 of 29523rdof 2,486Southern Europe, February 2024
Spain, Portugal and France, February 2024
November 2023 529.9 µg/m³29 of 30643rdof 2,243–
March 2023 488.6 µg/m³31 of 31406thof 911–

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.

Amora's worst days

DayUS AQIEpisode
2 Feb 2023 12545.1 µg/m³Northern Spain and Portugal, February 2023
24 Dec 2023 12244.0 µg/m³–
3 Feb 2023 11641.6 µg/m³Northern Spain and Portugal, February 2023
1 Feb 2023 11440.8 µg/m³–
25 Dec 2023 11139.6 µg/m³Spain, France and 2 more countries, December 2023 to January 2024
6 Nov 2023 10537.1 µg/m³–
7 Jan 2024 10436.7 µg/m³–
8 Jan 2024 10035.3 µg/m³–
23 Dec 2023 9934.6 µg/m³–
4 Feb 2023 9834.3 µg/m³Northern Spain and Portugal, February 2023

Daily means, the highest since 11 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, Amora, Portugal, 11 Jan 2023 – 11 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/pt/amora/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.

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

Updated 2026-10-12 18:07 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).