Fine particles
11.5µg/m³CAMS model • Open-Meteo
PortugalAir quality, PM2.5 and PM10
Compare air quality across cities in this country. Explore PM2.5, PM10 and other pollutant concentrations, check data timestamps, and view recent trends and historical charts.
Portugal - average concentrations across available points: PM2.5: 11.5 µg/m³, PM10: 17.3 µg/m³, O₃: 59.5 µg/m³, NO₂: 14.7 µg/m³, SO₂: 1.8 µg/m³, CO: 174.3 µg/m³. Date range: September 26, 2026. Each point contributes its latest available hourly value; this is not a daily or population-weighted average.
Lowest PM2.5: Setúbal (5.6 µg/m³). Highest PM2.5: Porto (21 µg/m³). This comparison covers 6 cities on September 26, 2026 using their latest available hourly values. Reading times may differ; this is not an annual-average ranking.
Air quality questions →
1 weather warning in effect for Portugal
All cities · Portugal
6 citiesPortugal↗
Lisbon
PM2.55.9
PM1011.6
µg/m³
PM2.5 · FairNO₂ 6.1O₃ 78
September 26, 202602:00
Portugal↗
Porto
PM2.521
PM1027.7
µg/m³
PM2.5 · ModerateNO₂ 37.3O₃ 33
September 26, 202602:00
Portugal↗
Braga
PM2.515.5
PM1019.1
µg/m³
PM2.5 · ModerateNO₂ 12.1O₃ 38
September 26, 202602:00
Portugal↗
Setúbal
PM2.55.6
PM1011.9
µg/m³
PM2.5 · FairNO₂ 7.1O₃ 74
September 26, 202602:00
Portugal↗
Coimbra
PM2.514.5
PM1021.2
µg/m³
PM2.5 · FairNO₂ 21.4O₃ 45
September 26, 202602:00
Portugal↗
Funchal Municipality
PM2.56.2
PM1012.4
µg/m³
PM2.5 · FairNO₂ 4.3O₃ 89
September 26, 202602:00
PM2.5 vs PM10 - what is the difference? → · Models and monitoring stations →
AVERAGE ACROSS AVAILABLE COUNTRY POINTS
Latest concentrations · Portugal
Particulate matter
17.3µg/m³Ozone
59.5µg/m³Nitrogen dioxide
14.7µg/m³Sulphur dioxide
1.8µg/m³Carbon monoxide
174.3µg/m³Average of the latest available hour at each model point. This is neither a population-weighted nor a daily average.
DAILY DATA · Portugal
Portugal - air pollution over recent days (2026-08-31 - 2026-09-25)
Averages across available points in the country. These are not population-weighted averages.
PM2.5Lowest 6.12 2026-08-31Highest 14.8 2026-09-042026-08-31 - 2026-09-25
PM10Lowest 10.42 2026-08-31Highest 27.31 2026-09-052026-08-31 - 2026-09-25
O₃Lowest 53.33 2026-09-07Highest 78.21 2026-09-032026-08-31 - 2026-09-25
NO₂Lowest 5.47 2026-08-31Highest 17.4 2026-09-042026-08-31 - 2026-09-25
SO₂Lowest 1.03 2026-08-31Highest 2.48 2026-09-042026-08-31 - 2026-09-25
COLowest 116.22 2026-09-07Highest 183.39 2026-09-232026-08-31 - 2026-09-25
Scroll the chart or table sideways to see the full period.
| Pollutant | 2026-09-25 | 2026-09-24 | 2026-09-23 | 2026-09-22 | 2026-09-21 | 2026-09-20 | 2026-09-19 | 2026-09-07 | 2026-09-06 | 2026-09-05 | 2026-09-04 | 2026-09-03 | 2026-09-02 | 2026-09-01 | 2026-08-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 | 11.53 | 12.52 | 12.41 | 10.14 | 8.85 | 8.11 | 7.64 | 6.98 | 13.02 | 14.65 | 14.8 | 11.77 | 9.76 | 7.98 | 6.12 |
| PM10 | 17.9 | 18.96 | 18.83 | 15.14 | 14.16 | 13.02 | 12.83 | 12.53 | 24.11 | 27.31 | 22.47 | 17.45 | 15.21 | 13.62 | 10.42 |
| O₃ | 75.89 | 70.77 | 74.95 | 74.74 | 75.74 | 76.33 | 69.73 | 53.33 | 61.03 | 69.87 | 72.63 | 78.21 | 67.53 | 65.05 | 62.07 |
| NO₂ | 9.93 | 14.85 | 14.03 | 12.15 | 9.94 | 7.83 | 8.8 | 6.4 | 8.99 | 10.9 | 17.4 | 13.44 | 9.51 | 7.31 | 5.47 |
| SO₂ | 1.43 | 2.15 | 2.32 | 2.08 | 1.71 | 1.29 | 1.48 | 1.14 | 1.45 | 1.92 | 2.48 | 1.96 | 1.68 | 1.28 | 1.03 |
| CO | 173.4 | 178.47 | 183.39 | 170.34 | 164.74 | 165.74 | 183.27 | 116.22 | 133.04 | 150.13 | 171.84 | 172.07 | 157.46 | 148.37 | 146.58 |
A dot on the chart and a dash in the table indicate missing data. The latest day may be incomplete.
AIR QUALITY ARCHIVE · Portugal
Portugal - air pollution history (2017-09 - 2020-05)
Compare monthly particle and gas concentrations in the available archive.
PM2.5Lowest 3.1 2019-11Highest 12.4 2017-102017-09 - 2020-05
PM10Lowest 5.98 2017-11Highest 24 2017-102017-09 - 2020-05
O₃Lowest 39.6 2018-12Highest 78.8 2017-112017-09 - 2020-05
NO₂Lowest 0.38 2017-11Highest 18.7 2017-102017-09 - 2020-05
Scroll the chart or table sideways to see the full period.
| Pollutant | 2020-05 | 2020-04 | 2020-03 | 2020-02 | 2020-01 | 2019-12 | 2019-11 | 2019-10 | 2019-09 | 2019-08 | 2019-07 | 2019-06 | 2019-05 | 2019-04 | 2019-03 | 2019-02 | 2019-01 | 2018-12 | 2018-11 | 2018-10 | 2018-09 | 2018-08 | 2018-07 | 2018-06 | 2018-05 | 2018-04 | 2018-03 | 2018-02 | 2018-01 | 2017-12 | 2017-11 | 2017-10 | 2017-09 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 | 3.41 | 3.7 | 6.46 | 7.71 | 7.36 | 4.46 | 3.1 | 3.56 | 3.97 | 3.62 | 4.22 | 3.41 | 3.42 | 3.67 | 4.4 | 5.8 | 4.86 | 5.43 | 3.41 | 5.04 | 6.33 | 5.28 | 4.76 | 3.28 | 4.99 | 4.5 | 4.7 | 7.09 | 7 | 4.35 | 7.31 | 12.4 | 6.1 |
| PM10 | 11.9 | 9.77 | 15.7 | 17 | 15.6 | 11.6 | 10.2 | 9.99 | 13.3 | 10.6 | 12.9 | 9.22 | 10.8 | 10 | 12.6 | 15.6 | 10.5 | 12.8 | 9.72 | 11.1 | 14.8 | 16.2 | 10.9 | 7.99 | 11.9 | 12.6 | 10.4 | 14.2 | 16.4 | 8.34 | 5.98 | 24 | 13.9 |
| O₃ | 65.9 | 68.5 | 65.7 | 48.5 | 48.2 | 47 | 49.5 | 49.3 | 62.5 | 57.9 | 59.6 | 67.6 | 69.1 | 67.7 | 66.4 | 56.1 | 50.3 | 39.6 | 48.9 | 58.9 | 68.3 | 64.7 | 61.7 | 65.1 | 78.4 | 73.6 | 73.3 | 59.8 | 44.6 | 58.2 | 78.8 | 49.8 | 57.6 |
| NO₂ | 5.18 | 4.85 | 8.04 | 12 | 13.7 | 13.6 | 11.2 | 11.3 | 11.3 | 8.34 | 8.49 | 8.69 | 8.26 | 12 | 14.5 | 16 | 14.9 | 15.6 | 11.1 | 11.2 | 11 | 9.37 | 6.48 | 5.95 | 8.04 | 8.97 | 10.9 | 15.4 | 16.9 | 1.78 | 0.38 | 18.7 | 13.1 |
A dot on the chart and a dash in the table indicate missing data. Historical values do not describe today’s air quality.
Environment and quality of life ratings · Portugal
Archived ratings of the local environment: green spaces, cleanliness, noise and water quality. Opinion indicators are separate from pollutant concentration measurements.
| Indicator | Portugal | Morocco | Andorra | Spain | France | Western Sahara |
|---|---|---|---|---|---|---|
| Green and Parks in the City | 73% | 41% | 69% | 70% | 61% | — |
| Pleasure of spending time in the city | 83% | 41% | 84% | 76% | 68% | — |
| Air Pollution | 23% | 63% | 29% | 30% | 36% | — |
| Garbage Disposal | 71% | 33% | 89% | 73% | 59% | — |
| Availability and quality of drinking water | 83% | 55% | 100% | 74% | 73% | — |
| Cleanliness and tidiness | 67% | 39% | 75% | 66% | 48% | — |
| Noise and Light pollution | 36% | 55% | 29% | 46% | 54% | — |
| Water Pollution | 28% | 54% | 19% | 29% | 39% | — |
WEATHER & SURROUNDINGS
Portugal · weather forecast
Daily maximum and minimum temperatures. Forecast point: 38.7223, -9.1393.
Scroll the forecast to see the following days.
Portugal · September 23, 2026: minimum temperature 20.2°C, maximum 31.6°C. Wind: 16.6 km/h. Humidity: 22%.
Full forecast: temperature, rainfall, wind and humidity
| Date | Day °C | Min °C | Max °C | Night °C | Rain mm | Wind m/s | Humidity % | Clouds % |
|---|---|---|---|---|---|---|---|---|
| 2026-09-23 | 29.7 | 20.2 | 31.6 | 23.7 | — | 4.6 | 22 | 5 |
| 2026-09-24 | 29.1 | 20.1 | 31.2 | 22.8 | — | 4.3 | 19 | 19 |
| 2026-09-25 | 25.6 | 17.1 | 28.2 | 20 | 1.9 | 5.2 | 34 | 77 |
| 2026-09-26 | 28.3 | 18.4 | 31.7 | 20.8 | — | 5.5 | 33 | 85 |
| 2026-09-27 | 25.3 | 18.6 | 27.4 | 18.8 | 0.6 | 4.9 | 41 | 99 |
| 2026-09-28 | 28.1 | 17.4 | 28.8 | 21.6 | 4 | 4 | 31 | 2 |
| 2026-09-29 | 25 | 19.3 | 25 | 20.1 | 0.9 | 5.7 | 59 | 58 |
| 2026-09-30 | 22.5 | 18.3 | 22.5 | 18.3 | 9.4 | 4 | 74 | 99 |
| 2026-10-01 | 22.7 | 16.3 | 23.9 | 18.2 | 0.9 | 5.2 | 42 | 100 |
| 2026-10-02 | 24.7 | 17.4 | 26.1 | 21.4 | 0.4 | 4.1 | 51 | 100 |
| 2026-10-03 | 26.8 | 20.5 | 27.3 | 24 | — | 3.2 | 48 | 3 |
| 2026-10-04 | 25.8 | 21.7 | 27.1 | 23 | 0.3 | 2.8 | 61 | 85 |
| 2026-10-05 | 23.3 | 20.3 | 23.3 | 20.5 | — | 3.3 | 65 | 100 |
| 2026-10-06 | 24 | 19 | 24.9 | 20.9 | 2.5 | 3 | 57 | 100 |
| 2026-10-07 | 25.2 | 19 | 26.4 | 21.6 | — | 3.1 | 50 | 11 |
| 2026-10-08 | 27.3 | 20.3 | 28.2 | 22.7 | — | 3.8 | 42 | 8 |
| 2026-10-09 | 28 | 21 | 28.5 | 22 | — | 3.9 | 38 | 82 |
| 2026-10-10 | 24.4 | 19.7 | 24.4 | 24.4 | — | 4.1 | 52 | 1 |
UV index by day · Portugal
Data for a country reference point. Local conditions may differ.
SPF 30-50, hat and sunglasses are a must. Better to stay in the shade 11:00-15:00.
0-2 low3-5 moderate6-7 high8-10 very high11+ extreme
Scroll the forecast to see the following days.
Portugal · September 25, 2026: UV index: 6.2 .
| Indicator | 2026-09-25 | 2026-09-26 | 2026-09-27 | 2026-09-28 | 2026-09-29 | 2026-09-30 | 2026-10-01 | 2026-10-02 | 2026-10-03 | 2026-10-04 | 2026-10-05 | 2026-10-06 | 2026-10-07 | 2026-10-08 | 2026-10-09 | 2026-10-10 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index | 6.2 | 5.5 | 4.2 | 5.8 | 4.1 | 4.7 | 4.8 | 3.7 | 6 | 5.2 | 3.4 | 5.3 | 1.6 | 4.7 | 4.7 | — |
Sea temperature and waves · Portugal
Data for a selected coastal point.
Scroll the forecast to see the following days.
Portugal · September 25, 2026: Sea temperature (°C): 18.9 . Wave height (m): 0.5 .
| Indicator | 2026-09-25 | 2026-09-26 | 2026-09-27 | 2026-09-28 | 2026-09-29 | 2026-09-30 | 2026-10-01 | 2026-10-02 | 2026-10-03 | 2026-10-04 | 2026-10-05 | 2026-10-06 | 2026-10-07 | 2026-10-08 | 2026-10-09 | 2026-10-10 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 18.9 | 18.8 | 18.7 | 18.7 | 18.5 | 18.7 | 18.8 | 18.7 | 18.7 | — | — | — | — | — | — | — |
| Wave height (m) | 0.5 | 0.9 | 0.7 | 0.6 | 0.9 | 1.3 | 1.6 | 1 | 0.7 | — | — | — | — | — | — | — |
Sea temperature throughout the year · Portugal
Monthly climate values for a selected coastal area (°C).
15.1°Jan
14.9°Feb
15.2°Mar
16.9°Apr
17.8°May
19.5°Jun
19.8°Jul
19.7°Aug
18.7°Sep
19°Oct
17.7°Nov
15.7°Dec
| °C | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea | 15.1 | 14.9 | 15.2 | 16.9 | 17.8 | 19.5 | 19.8 | 19.7 | 18.7 | 19 | 17.7 | 15.7 |
AIR QUALITY QUESTIONS
Portugal · air pollution - questions and answers
What do the latest air quality data show for Portugal?
Portugal - average concentrations across available points: PM2.5: 11.5 µg/m³, PM10: 17.3 µg/m³, O₃: 59.5 µg/m³, NO₂: 14.7 µg/m³, SO₂: 1.8 µg/m³, CO: 174.3 µg/m³. Date range: September 26, 2026. Each point contributes its latest available hourly value; this is not a daily or population-weighted average.
When was PM2.5 highest in Portugal over the past week?
The highest available daily mean PM2.5 was 12.5 µg/m³ (September 24, 2026). This comparison covers 7 days with data in the seven days before September 26, 2026. The day of the latest reading is excluded because it may be incomplete.
Which cities in Portugal have the cleanest and most polluted air by PM2.5?
Lowest PM2.5: Setúbal (5.6 µg/m³). Highest PM2.5: Porto (21 µg/m³). This comparison covers 6 cities on September 26, 2026 using their latest available hourly values. Reading times may differ; this is not an annual-average ranking.
What period does the pollution history for Portugal cover?
Available monthly means cover 2017-09 - 2020-05. The tables include PM2.5, PM10, O₃, NO₂. Missing values are marked with a dash, not treated as zero. Monthly archives and current model data may come from different sources.
Is the PM2.5 concentration for Portugal an AQI score?
No. PM2.5 and PM10 are concentrations in µg/m³. AQI is a separate index calculated using a defined scale. When comparing air quality, also check other pollutants, the date and the averaging period.
What UV index does the available forecast show for Portugal?
For September 25, 2026, the forecast UV index is 6.2. The UV section also shows the following available days.
What wind speed is forecast for Portugal?
For September 23, 2026, forecast wind speed is 16.6 km/h. The weather table includes wind, temperature and other available parameters for subsequent days.
PM2.5 · PM10 · NO₂ · O₃
Understanding air quality and pollution data
What do PM2.5 and PM10 mean?
PM2.5 and PM10 are fractions of airborne particulate matter. PM2.5 covers fine particles up to 2.5 micrometres in diameter, while PM10 covers particles up to 10 micrometres. Concentrations in µg/m³ tell you how many micrograms of particles are present in a cubic metre of air. Compare values over the same time period.
Where does the air pollution data come from?
The latest concentrations come from the CAMS atmospheric model via Open-Meteo for each city’s coordinates. Values describe a model area, so conditions on individual streets may differ. Historical monitoring station data is shown separately where available.
How does PM2.5 concentration differ from AQI?
PM2.5 is the concentration of one particle fraction, expressed in µg/m³. AQI is an index calculated using a particular scale and thresholds. The pollutant cards show concentrations. Our city ranking compares PM2.5; PM10, ozone, nitrogen dioxide and other available gases add to the picture of air quality.
Which dates do the values and charts cover?
Each current value has a data date and time. Current concentration cards show the latest available hour, daily charts summarise individual days, and monthly records let you compare longer periods. These values represent different time intervals.
How can I check pollution in my city?
Search for your city and open its air quality page. Start with PM2.5 and PM10, then check the other available pollutants and the data timestamp. Charts and tables help you compare concentrations over time. Weather and historical climate information complement the pollution data.