Fine particles
6.5µg/m³CAMS model • Open-Meteo
GreeceAir 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.
Greece - average concentrations across available points: PM2.5: 6.5 µg/m³, PM10: 9.2 µg/m³, O₃: 56.4 µg/m³, NO₂: 10.4 µg/m³, SO₂: 1.3 µg/m³, CO: 183 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: Pátrai (4.2 µg/m³). Highest PM2.5: Athens (9.3 µg/m³). This comparison covers 5 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 →
3 weather warnings in effect for Greece
All cities · Greece
5 citiesGreece↗
Athens
PM2.59.3
PM1014.6
µg/m³
PM2.5 · FairNO₂ 16.3O₃ 61
September 26, 202604:00
Greece↗
Thessaloníki
PM2.56
PM108.3
µg/m³
PM2.5 · FairNO₂ 12O₃ 50
September 26, 202604:00
Greece↗
Pátrai
PM2.54.2
PM105.8
µg/m³
PM2.5 · GoodNO₂ 7.1O₃ 60
September 26, 202604:00
Greece↗
Irákleion
PM2.57.3
PM1011.2
µg/m³
PM2.5 · FairNO₂ 7.8O₃ 65
September 26, 202604:00
Greece↗
Larissa
PM2.55.7
PM106.1
µg/m³
PM2.5 · FairNO₂ 8.9O₃ 46
September 26, 202604:00
PM2.5 vs PM10 - what is the difference? → · Models and monitoring stations →
AVERAGE ACROSS AVAILABLE COUNTRY POINTS
Latest concentrations · Greece
Particulate matter
9.2µg/m³Ozone
56.4µg/m³Nitrogen dioxide
10.4µg/m³Sulphur dioxide
1.3µg/m³Carbon monoxide
183µg/m³Average of the latest available hour at each model point. This is neither a population-weighted nor a daily average.
DAILY DATA · Greece
Greece - 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 6.65 2026-09-23Highest 12.57 2026-09-022026-08-31 - 2026-09-25
PM10Lowest 9.73 2026-09-23Highest 23.14 2026-09-012026-08-31 - 2026-09-25
O₃Lowest 64.6 2026-09-24Highest 85.32 2026-09-062026-08-31 - 2026-09-25
NO₂Lowest 7.55 2026-09-07Highest 13.79 2026-09-212026-08-31 - 2026-09-25
SO₂Lowest 1.57 2026-08-31Highest 2.76 2026-09-062026-08-31 - 2026-09-25
COLowest 149.18 2026-09-07Highest 200.68 2026-09-242026-08-31 - 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 | 7.91 | 7.09 | 6.65 | 8.53 | 11.36 | 8.73 | 8.69 | 7.73 | 10.23 | 8.75 | 10.22 | 11.93 | 12.57 | 12.4 | 12.01 |
| PM10 | 11.3 | 10.71 | 9.73 | 11.77 | 16.21 | 13.69 | 13.3 | 12.2 | 14.33 | 13.59 | 14.79 | 18.18 | 21.79 | 23.14 | 22.73 |
| O₃ | 68.54 | 64.6 | 68.43 | 74.77 | 75.73 | 72.94 | 72.69 | 82.52 | 85.32 | 83.58 | 81.05 | 81.93 | 76.3 | 78.26 | 82.18 |
| NO₂ | 12.86 | 12.42 | 9.53 | 10.9 | 13.79 | 11.98 | 13.03 | 7.55 | 11.87 | 10.3 | 10.27 | 11.94 | 13.13 | 12.66 | 9.55 |
| SO₂ | 1.88 | 2.28 | 2.06 | 2.25 | 2.59 | 1.94 | 2.28 | 1.93 | 2.76 | 1.78 | 1.67 | 1.93 | 2.01 | 1.86 | 1.57 |
| CO | 197.12 | 200.68 | 183.66 | 172.73 | 172.97 | 163.58 | 166.83 | 149.18 | 163.43 | 163.41 | 167.94 | 172.52 | 176.04 | 178.92 | 176.46 |
A dot on the chart and a dash in the table indicate missing data. The latest day may be incomplete.
Environment and quality of life ratings · Greece
Archived ratings of the local environment: green spaces, cleanliness, noise and water quality. Opinion indicators are separate from pollutant concentration measurements.
| Indicator | Greece | Albania | Macedonia | Bulgaria | Serbia | Bosnia and Herzegovina |
|---|---|---|---|---|---|---|
| Green and Parks in the City | 35% | 37% | 34% | 66% | 55% | 54% |
| Pleasure of spending time in the city | 63% | 40% | 29% | 50% | 53% | 53% |
| Air Pollution | 47% | 69% | 80% | 68% | 65% | 62% |
| Garbage Disposal | 40% | 33% | 29% | 44% | 39% | 49% |
| Availability and quality of drinking water | 75% | 33% | 58% | 70% | 64% | 71% |
| Cleanliness and tidiness | 40% | 36% | 26% | 42% | 37% | 50% |
| Noise and Light pollution | 47% | 53% | 54% | 51% | 51% | 38% |
| Water Pollution | 35% | 68% | 51% | 41% | 52% | 45% |
WEATHER THROUGH THE YEAR
What is the weather like throughout the year?
Choose a month to compare daytime and nighttime temperatures and the frequency of rain using historical weather data.
POWER
Athens · September
Mean daily maximum29°C
Mean daily minimum20.5°C
Days with rainfall ≥1 mm13.7%
Mean daily maximum temperatures by month · Bar scale starts at -15°C
12.9°Jan
14°Feb
16°Mar
20.3°Apr
25.1°May
30.7°Jun
33.2°Jul
32.5°Aug
29°Sep
23.8°Oct
19.1°Nov
14.8°Dec
NASA POWER: grid data covering the city. Weather history describes the climate; it is not a forecast or an air quality measurement.
View the data table
| Month | Mean daily maximum °C | Mean daily minimum °C | Days with rainfall ≥1 mm |
|---|---|---|---|
| January | 12.9 | 7.1 | 34.5% |
| February | 14 | 7.6 | 26.9% |
| March | 16 | 8.6 | 22.6% |
| April | 20.3 | 11.4 | 18% |
| May | 25.1 | 15.5 | 15.5% |
| June | 30.7 | 20.8 | 15% |
| July | 33.2 | 23.5 | 8.7% |
| August | 32.5 | 23.4 | 4.8% |
| September | 29 | 20.5 | 13.7% |
| October | 23.8 | 16.3 | 17.4% |
| November | 19.1 | 13.1 | 31% |
| December | 14.8 | 9.2 | 28.7% |
WEATHER & SURROUNDINGS
Greece · weather forecast
Daily maximum and minimum temperatures. Forecast point: 39.0742, 21.8243.
Scroll the forecast to see the following days.
Greece · September 23, 2026: minimum temperature 7.3°C, maximum 16.4°C. Wind: 12.7 km/h. Humidity: 44%.
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 | 16.1 | 7.3 | 16.4 | 7.3 | 5 | 3.5 | 44 | 38 |
| 2026-09-24 | 16.8 | 8.9 | 18.2 | 10.8 | 0.2 | 2.1 | 47 | 45 |
| 2026-09-25 | 17.8 | 10.4 | 18.7 | 12.5 | 1.6 | 3.1 | 52 | 77 |
| 2026-09-26 | 13.2 | 10.1 | 14 | 10.1 | 15 | 4.6 | 97 | 100 |
| 2026-09-27 | 14.3 | 9.3 | 14.4 | 9.8 | 1.2 | 6.1 | 65 | 54 |
| 2026-09-28 | 14.8 | 9 | 15.9 | 10.3 | 0.6 | 3.1 | 62 | 4 |
| 2026-09-29 | 14.7 | 8.6 | 16 | 10 | 0.2 | 3 | 62 | 14 |
| 2026-09-30 | 14.1 | 8.7 | 15.1 | 10.8 | 0.8 | 3.4 | 67 | 27 |
| 2026-10-01 | 16.5 | 9.1 | 16.5 | 12.5 | 2 | 1.8 | 55 | 39 |
| 2026-10-02 | 10.8 | 9.8 | 11.4 | 9.8 | 11.1 | 2.1 | 97 | 98 |
| 2026-10-03 | 14 | 9 | 14 | 9.9 | 6.6 | 2.1 | 71 | 77 |
| 2026-10-04 | 14.9 | 9 | 16.2 | 12.1 | 0.6 | 2.3 | 64 | 19 |
| 2026-10-05 | 17.5 | 9.2 | 18.7 | 13.8 | 0.2 | 1.4 | 47 | 72 |
| 2026-10-06 | 16.6 | 10.1 | 17.3 | 11.9 | 0.6 | 2.8 | 51 | 72 |
| 2026-10-07 | 10.5 | 9.6 | 11.1 | 9.6 | 38.1 | 3.3 | 98 | 100 |
| 2026-10-08 | 9.6 | 9 | 12.8 | 10.9 | 91.7 | 10.1 | 98 | 100 |
| 2026-10-09 | 16.9 | 11.1 | 19 | 12.7 | 0.3 | 2.7 | 60 | 15 |
| 2026-10-10 | 12.3 | 11.4 | 16.1 | 16.1 | 5.1 | 1.6 | 95 | 100 |
UV index by day · Greece
Data for a country reference point. Local conditions may differ.
Seek shade around midday. SPF 30+, sunglasses and a hat for longer stays.
0-2 low3-5 moderate6-7 high8-10 very high11+ extreme
Scroll the forecast to see the following days.
Greece · September 25, 2026: UV index: 5.4 .
| 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 | 5.4 | 1.9 | 6.1 | 6.1 | 5.6 | 3.8 | 4.6 | 5.8 | 4.5 | 4.1 | 5.3 | 3.5 | 5.6 | 5.6 | 5.6 | — |
AIR QUALITY QUESTIONS
Greece · air pollution - questions and answers
What do the latest air quality data show for Greece?
Greece - average concentrations across available points: PM2.5: 6.5 µg/m³, PM10: 9.2 µg/m³, O₃: 56.4 µg/m³, NO₂: 10.4 µg/m³, SO₂: 1.3 µg/m³, CO: 183 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 Greece over the past week?
The highest available daily mean PM2.5 was 11.4 µg/m³ (September 21, 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 Greece have the cleanest and most polluted air by PM2.5?
Lowest PM2.5: Pátrai (4.2 µg/m³). Highest PM2.5: Athens (9.3 µg/m³). This comparison covers 5 cities on September 26, 2026 using their latest available hourly values. Reading times may differ; this is not an annual-average ranking.
Is the PM2.5 concentration for Greece 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 Greece?
For September 25, 2026, the forecast UV index is 5.4. The UV section also shows the following available days.
What wind speed is forecast for Greece?
For September 23, 2026, forecast wind speed is 12.7 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.