Lisbon air quality now

Portugal · The summary is refreshed every 15 minutes.

Now

No current value: fewer than four sensors at different places are reporting now.

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Lisbon, November 10, 2026: daily mean PM2.5 5 µg/m³ (4 sensors), level “Low” — as in the Atmy Data Hub. Open methodology and data in JSON: Methodology and data sources · JSON

There are not enough fresh measurements for Lisbon right now. From 09:00 to 19:00 local time the city mean PM2.5 stayed roughly level: from 2.0 to 1.5 µg/m³. The highest hour was 14:00 with 5.0 µg/m³.

The weather data do not point to a clear reason for this level.

Weather now: partly cloudy, 18°C, wind 4 m/s, humidity 90%. No major change in the wind is expected in the coming hours.

Written automatically at 21:07 local time (21:07 UTC) from sensor measurements and the weather forecast. Values are approximate; hypotheses are marked.

4 m/s

Wind, WNW

64.8 mm

Precipitation today

Lisbon: air quality for the completed day

Metric: PM2.5, µg/m³ · Color scale: EPA AQI · November 10, 2026 · 00:00–24:00 UTC

5 µg/m³ Low

Daily mean PM2.5 on November 10, 2026 (00:00–24:00 UTC): 5 µg/m³ from 4 sensors that passed the quality check — the same value as in the Atmy Data Hub.

No. 1 of 1 cities in Portugal and No. 622 of 676 worldwide, from the most polluted.

LowModerateElevatedHighVery highExtremely high

Pollution accumulation index now

18/100Low · An estimate of weather conditions · not a PM2.5 forecast

Now1821
22.0006.0013.0021.00

Pollution accumulation forecast

Today — November 11

20°/17°

Index by time of day

32/100Low

  1. 32/100Night
  2. 28/100Morning
  3. 9/100Day
  4. 20/100Evening

Thursday — November 12

20°/17°

Index by time of day

42/100Moderate

  1. 42/100Night
  2. 32/100Morning
  3. 7/100Day
  4. 22/100Evening

Friday — November 13

20°/16°

Index by time of day

48/100Moderate

  1. 48/100Night
  2. 37/100Morning
  3. 6/100Day
  4. 24/100Evening

Saturday — November 14

20°/16°

Index by time of day

43/100Moderate

  1. 43/100Night
  2. 35/100Morning
  3. 8/100Day
  4. 26/100Evening

Sunday — November 15

20°/15°

Index by time of day

54/100Moderate

  1. 54/100Night
  2. 39/100Morning
  3. 6/100Day
  4. 16/100Evening

Monday — November 16

20°/18°

Index by time of day

41/100Moderate

  1. 41/100Night
  2. 32/100Morning
  3. 7/100Day
  4. 15/100Evening

Forecast of conditions that trap pollution near the surface

Weather

18°

Partly cloudy. Feels like 17°C

  1. MorningRain18°C96%
  2. DayCloudy20°C97%
  3. EveningPartly cloudy18°C91%

Wind

4m/sWind from the WNW

11m/sWind gusts

Wind force: 3

Gusts up to 12 m/s are expected.

10-day weather forecast for Lisbon

Portugal

  1. TodayNov 11Rain20°C17°C
  2. ThuNov 12Cloudy20°C17°C
  3. FriNov 13Rain20°C16°C
  4. SatNov 14Thunderstorm20°C16°C
  5. SunNov 15Cloudy20°C15°C
  6. MonNov 16Cloudy20°C18°C
  7. TueNov 17Cloudy21°C18°C
  8. WedNov 18Cloudy19°C16°C
  9. ThuNov 19Partly cloudy18°C14°C
  10. FriNov 20Rain15°C14°C

Portugal: sensors in total

7

  1. Rio MaiorPortugal

    2

  2. LisbonPortugal

    2

  3. AmoraPortugal

    1

Cities with the most sensors

All sensors on the map, by city as the map assigns them; the city’s values count only the sensors that pass the Data Hub’s quality check.

Air quality calendar: Lisbon

Daily mean PM2.5 of the city sensors, µg/m³

Click a day to see its date and value.

LowModerateElevatedHighVery highExtremely high

Portugal · City ranking · All pilot cities

Questions

What was the air quality in Lisbon over the last completed day?

Daily mean PM2.5 on November 10, 2026 (00:00–24:00 UTC): 5 µg/m³ from 4 sensors that passed the quality check — the same value as in the Atmy Data Hub. No. 1 of 1 cities in Portugal and No. 622 of 676 worldwide, from the most polluted.

What is the air quality in Lisbon right now?

Fresh data for Lisbon are insufficient (last update: 07:45 local time, 07:45 UTC). Open the map for the latest readings of individual sensors.

Where do these data come from?

From Atmy sensors and connected public networks (citizen, experimental and government monitors), aggregated by Atmy. Values are approximate; see the methodology.

How often is this page updated?

The summary is rebuilt every 15 minutes from the latest reading of each sensor, each no older than one hour.

Data

Where do these data come from?

The daily value is the Data Hub’s: the mean of the city’s sensors that passed the nightly quality check, each with at least 12 valid hours, and only with sensors at four places 500 m apart; days are UTC.

“Now” uses the same sensors and rule: the mean of their latest readings, each at most 60 minutes old, shown only with sensors at four places 500 m apart reporting.

Source: public Atmy monitoring data. Methodology and data sources · Data terms