Fine particles
23µg/m³Moderate · 1 hourCAMS model • Open-Meteo
AthensAir quality, PM2.5 and PM10
Check PM2.5 and PM10 particle levels alongside ozone, nitrogen dioxide and other gases. Compare the latest available concentrations with recent days and explore changes in air pollution through the available historical records.
Athens - latest available concentrations (October 23, 2026, 04:00 local time): PM2.5: 23 µg/m³, PM10: 37.3 µg/m³, O₃: 14 µg/m³, NO₂: 46 µg/m³, SO₂: 5.1 µg/m³, CO: 258 µg/m³. These are hourly CAMS model values for a point representing the city.
Air quality questions →
3 weather warnings in effect for Greece
Athens · Air pollutant concentrations
Data time: October 23, 2026 · 04:00 · local timeParticulate matter
37.3µg/m³Fair · 1 hourOzone
14µg/m³Good · 1 hourNitrogen dioxide
46µg/m³Moderate · 1 hourSulphur dioxide
5.1µg/m³Good · 1 hourCarbon monoxide
258µg/m³PM2.5 vs PM10 - what is the difference? → · Models and monitoring stations →
DAILY DATA · Athens
Athens - air pollution over recent days (2026-08-31 - 2026-10-22)
Concentrations of all available pollutants for this city.
PM2.5Lowest 5.99 2026-10-17Highest 19.04 2026-10-202026-08-31 - 2026-10-22
PM10Lowest 8.94 2026-10-17Highest 25.75 2026-10-202026-08-31 - 2026-10-22
O₃Lowest 34.42 2026-10-19Highest 81.21 2026-09-072026-08-31 - 2026-10-22
NO₂Lowest 11.98 2026-09-07Highest 50.88 2026-10-202026-08-31 - 2026-10-22
SO₂Lowest 2.09 2026-10-22Highest 10.39 2026-10-192026-08-31 - 2026-10-22
COLowest 160.33 2026-09-07Highest 293.75 2026-10-202026-08-31 - 2026-10-22
Scroll the chart or table sideways to see the full period.
| Pollutant | 2026-10-22 | 2026-10-21 | 2026-10-20 | 2026-10-19 | 2026-10-18 | 2026-10-17 | 2026-10-16 | 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 | 11.47 | 15.91 | 19.04 | 14.59 | 12.26 | 5.99 | 10.98 | 7.59 | 9.77 | 8.33 | 10.63 | 10.74 | 12.2 | 11.89 | 12.12 |
| PM10 | 24.1 | 22.03 | 25.75 | 20.39 | 16.93 | 8.94 | 14.86 | 11.64 | 14.03 | 11.77 | 15.29 | 16.97 | 19.4 | 20.89 | 20.06 |
| O₃ | 59.17 | 54 | 35.88 | 34.42 | 39 | 51.29 | 48.46 | 81.21 | 71.08 | 75.88 | 79.5 | 70.92 | 63.58 | 68.13 | 75.79 |
| NO₂ | 23.69 | 37 | 50.88 | 48.78 | 39.77 | 18.23 | 25.43 | 11.98 | 25.75 | 15.51 | 16.24 | 19.04 | 23.19 | 22.87 | 16.78 |
| SO₂ | 2.09 | 3.48 | 7.66 | 10.39 | 8.53 | 3.34 | 4.61 | 2.97 | 5.09 | 2.77 | 3.09 | 3.21 | 3.16 | 3.23 | 2.84 |
| CO | 183.5 | 246.63 | 293.75 | 284.17 | 259.25 | 201.17 | 227.5 | 160.33 | 196.79 | 177.79 | 184.63 | 187.92 | 197.88 | 205.42 | 196.5 |
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 · Athens
Archived ratings of the local environment: green spaces, cleanliness, noise and water quality. Opinion indicators are separate from pollutant concentration measurements.
| Indicator | Athens | Albania | Macedonia | Bulgaria | Serbia | Bosnia and Herzegovina |
|---|---|---|---|---|---|---|
| Green and Parks in the City | 28% | 37% | 34% | 66% | 55% | 54% |
| particulate matter PM2.5 (µg/m³) | 20 | — | — | — | — | — |
| Pleasure of spending time in the city | 59% | 40% | 29% | 50% | 53% | 53% |
| particulate matter PM10 (µg/m³) | 41 | — | — | — | — | — |
| Air Pollution | 55% | 69% | 80% | 68% | 65% | 62% |
| Garbage Disposal | 36% | 33% | 29% | 44% | 39% | 49% |
| Availability and quality of drinking water | 82% | 33% | 58% | 70% | 64% | 71% |
| Cleanliness and tidiness | 34% | 36% | 26% | 42% | 37% | 50% |
| Noise and Light pollution | 54% | 53% | 54% | 51% | 51% | 38% |
| Water Pollution | 29% | 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 · October
Mean daily maximum23.8°C
Mean daily minimum16.3°C
Days with rainfall ≥1 mm17.4%
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% |
Air quality in nearby cities
All cities →Greece↗
Pátrai
PM2.56.4
PM109.9
µg/m³
PM2.5 · FairNO₂ 3.3O₃ 65
October 23, 202604:00
Greece↗
Larissa
PM2.517.6
PM1025.5
µg/m³
PM2.5 · ModerateNO₂ 17.9O₃ 22
October 23, 202604:00
Greece↗
Thessaloníki
PM2.511.6
PM1013.9
µg/m³
PM2.5 · FairNO₂ 20.9O₃ 31
October 23, 202604:00
Greece↗
Irákleion
PM2.59.9
PM1036.4
µg/m³
PM2.5 · FairNO₂ 7O₃ 47
October 23, 202604:00
Greece · air quality in other cities
WEATHER & SURROUNDINGS
Athens · weather forecast
Daily maximum and minimum temperatures. Forecast point: 37.9795, 23.7162.
Scroll the forecast to see the following days.
Athens · October 20, 2026: minimum temperature 15.5°C, maximum 23.9°C. Wind: 7.3 km/h. Humidity: 61%.
Full forecast: temperature, rainfall, wind and humidity
| Date | Day °C | Min °C | Max °C | Night °C | Rain mm | Wind m/s | Humidity % | Clouds % |
|---|---|---|---|---|---|---|---|---|
| 2026-10-20 | 23.6 | 15.5 | 23.9 | 17.8 | 81.3 | 2 | 61 | 21 |
| 2026-10-21 | 22.9 | 15.8 | 22.9 | 17.9 | 0.7 | 1.9 | 74 | 28 |
| 2026-10-22 | 24.5 | 17.9 | 25 | 21 | 0.1 | 2.5 | 67 | 1 |
| 2026-10-23 | 23.6 | 14.3 | 24.1 | 14.3 | 2.3 | 1.6 | 66 | 75 |
| 2026-10-24 | 20.6 | 12.7 | 21 | 14.5 | 0.1 | 1.7 | 54 | 45 |
| 2026-10-25 | 18.7 | 12.9 | 19.4 | 12.9 | 0.2 | 2 | 64 | 60 |
| 2026-10-26 | 18.9 | 12.1 | 19.7 | 14.9 | 0.6 | 3.1 | 63 | 98 |
| 2026-10-27 | 17.1 | 14.6 | 18.4 | 15.9 | 3.7 | 5.1 | 78 | 98 |
| 2026-10-28 | 18.7 | 15.4 | 19.9 | 15.4 | 0.3 | 4 | 61 | 13 |
| 2026-10-29 | 18.7 | 14.4 | 19.9 | 15 | 4.1 | 5.3 | 61 | 68 |
| 2026-10-30 | 18.8 | 13.9 | 20.5 | 16.5 | 3.8 | 3.7 | 56 | 2 |
| 2026-10-31 | 19.7 | 14.6 | 21.3 | 14.6 | 0.2 | 7.3 | 41 | 11 |
| 2026-11-01 | 15.7 | 13.5 | 17.1 | 14.3 | 9.1 | 6.5 | 51 | 74 |
| 2026-11-02 | 15.4 | 13.5 | 17.2 | 15.2 | 0.3 | 2.3 | 65 | 100 |
| 2026-11-03 | 16.9 | 14.3 | 18.3 | 15.7 | 0.2 | 2.1 | 68 | 100 |
| 2026-11-04 | 17.9 | 14.5 | 19.6 | 15.1 | 22.7 | 2.7 | 61 | 66 |
| 2026-11-05 | 17.7 | 13.8 | 19.6 | 16.7 | 5.8 | 3.2 | 59 | 77 |
| 2026-11-06 | 16 | 15.6 | 17.9 | 17.9 | 1.7 | 3.9 | 82 | 100 |
UV index by day · Athens
City data.
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.
Athens · October 22, 2026: UV index: 4.9 .
| Indicator | 2026-10-22 | 2026-10-23 | 2026-10-24 | 2026-10-25 | 2026-10-26 | 2026-10-27 | 2026-10-28 | 2026-10-29 | 2026-10-30 | 2026-10-31 | 2026-11-01 | 2026-11-02 | 2026-11-03 | 2026-11-04 | 2026-11-05 | 2026-11-06 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index | 4.9 | 4.4 | 4.8 | 4.2 | 1.3 | 3.4 | 4.3 | 4.3 | 4.2 | 4.2 | 3.6 | 3.4 | 2.9 | 3.8 | 3.8 | — |
AIR QUALITY QUESTIONS
Athens · air pollution - questions and answers
What do the latest air quality data show for Athens?
Athens - latest available concentrations (October 23, 2026, 04:00 local time): PM2.5: 23 µg/m³, PM10: 37.3 µg/m³, O₃: 14 µg/m³, NO₂: 46 µg/m³, SO₂: 5.1 µg/m³, CO: 258 µg/m³. These are hourly CAMS model values for a point representing the city.
When was PM2.5 highest in Athens over the past week?
The highest available daily mean PM2.5 was 19 µg/m³ (October 20, 2026). This comparison covers 7 days with data in the seven days before October 23, 2026. The day of the latest reading is excluded because it may be incomplete.
Is the PM2.5 concentration for Athens 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 Athens?
For October 22, 2026, the forecast UV index is 4.9. The UV section also shows the following available days.
What wind speed is forecast for Athens?
For October 20, 2026, forecast wind speed is 7.3 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.