Fine particles
49.6µg/m³Moderate · 1 hourCAMS model • Open-Meteo
IstanbulAir 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.
Istanbul - latest available concentrations (October 23, 2026, 04:00 local time): PM2.5: 49.6 µg/m³, PM10: 58.5 µg/m³, O₃: 2 µg/m³, NO₂: 63.6 µg/m³, SO₂: 21.8 µg/m³, CO: 295 µg/m³. These are hourly CAMS model values for a point representing the city.
Air quality questions →Istanbul · Air pollutant concentrations
Data time: October 23, 2026 · 04:00 · local timeParticulate matter
58.5µg/m³Moderate · 1 hourOzone
2µg/m³Good · 1 hourNitrogen dioxide
63.6µg/m³Poor · 1 hourSulphur dioxide
21.8µg/m³Fair · 1 hourCarbon monoxide
295µg/m³PM2.5 vs PM10 - what is the difference? → · Models and monitoring stations →
DAILY DATA · Istanbul
Istanbul - air pollution over recent days (2026-08-31 - 2026-10-22)
Concentrations of all available pollutants for this city.
PM2.5Lowest 5.53 2026-09-07Highest 44.04 2026-10-222026-08-31 - 2026-10-22
PM10Lowest 9.13 2026-10-17Highest 57.11 2026-10-222026-08-31 - 2026-10-22
O₃Lowest 17.58 2026-10-22Highest 76.38 2026-09-022026-08-31 - 2026-10-22
NO₂Lowest 11.05 2026-09-07Highest 62.3 2026-10-222026-08-31 - 2026-10-22
SO₂Lowest 2.7 2026-09-07Highest 21.86 2026-10-212026-08-31 - 2026-10-22
COLowest 157.96 2026-09-07Highest 371 2026-10-222026-08-31 - 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 | 44.04 | 40.72 | 29.33 | 23.1 | 12.74 | 6.61 | 9.9 | 5.53 | 17.7 | 11.77 | 9.39 | 8.83 | 9.61 | 9.37 | 10.29 |
| PM10 | 57.11 | 52.72 | 37.54 | 30.52 | 17.49 | 9.13 | 14.4 | 9.16 | 24.22 | 17.24 | 16.11 | 13.8 | 16.51 | 14.69 | 16.37 |
| O₃ | 17.58 | 29.96 | 32.5 | 45.88 | 56.79 | 53.67 | 48.79 | 69.25 | 64.5 | 73.5 | 72.79 | 72.46 | 76.38 | 69.71 | 68.13 |
| NO₂ | 62.3 | 49.73 | 45.82 | 31.37 | 15.6 | 13.17 | 18.18 | 11.05 | 22.7 | 16.46 | 12.28 | 11.42 | 13.57 | 14.78 | 14.98 |
| SO₂ | 21.44 | 21.86 | 17.41 | 16.66 | 12.82 | 3.24 | 5.45 | 2.7 | 8.3 | 4.03 | 2.95 | 2.78 | 3.33 | 3.63 | 3.75 |
| CO | 371 | 362.75 | 293.63 | 236.46 | 197.21 | 192.08 | 218.38 | 157.96 | 199.5 | 199.46 | 169.67 | 164.79 | 172.83 | 180.08 | 184.21 |
A dot on the chart and a dash in the table indicate missing data. The latest day may be incomplete.
AIR QUALITY ARCHIVE · Istanbul
Istanbul - air pollution history (2016-12 - 2018-10)
Compare monthly particle and gas concentrations in the available archive.
PM10Lowest 17.36 2017-01Highest 151.87 2017-022016-12 - 2018-10
O₃Lowest 4.67 2017-04Highest 14.2 2017-012016-12 - 2018-10
NO₂Lowest 61.8 2016-12Highest 126 2017-042016-12 - 2018-10
SO₂Lowest 4.42 2018-03Highest 12.35 2017-012016-12 - 2018-10
COLowest 241.5 2017-06Highest 781.5 2017-012016-12 - 2018-10
Scroll the chart or table sideways to see the full period.
| Pollutant | 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 | 2017-08 | 2017-07 | 2017-06 | 2017-05 | 2017-04 | 2017-03 | 2017-02 | 2017-01 | 2016-12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM10 | 29.33 | 29.33 | 32 | — | 36.7 | 33.33 | 39.8 | 44.17 | 31.93 | 39.6 | 28.87 | 20.63 | 49.9 | 42.87 | 33.63 | 30.33 | 35.3 | 38.37 | 45.03 | 45.53 | 151.87 | 17.36 | 26.57 |
| O₃ | 8.5 | 8.5 | — | — | 12.88 | 13.09 | 8.55 | 8.45 | 9.6 | 6.69 | 8.04 | 7.44 | 7.52 | 10.61 | 13.44 | 11.01 | 7.57 | 9.09 | 4.67 | 6.71 | 9.06 | 14.2 | 11.71 |
| NO₂ | 83 | 83 | — | — | 82.8 | 71.65 | 92.05 | 85.5 | 70.85 | 75.8 | 65.5 | 74.55 | 80.1 | 87.3 | 69.2 | 64.45 | 88.65 | 91.7 | 126 | 105.75 | 93.2 | 72 | 61.8 |
| SO₂ | 7.5 | 7.5 | 5 | — | 5.81 | 5.03 | 5.48 | 4.42 | 6.91 | 8.16 | 12.31 | 5.46 | 5.45 | 6.68 | 6.48 | 8.47 | 7.77 | 8.44 | 11.72 | 11.11 | 11.9 | 12.35 | 9.43 |
| CO | 303.5 | 303.5 | — | — | 273 | 283 | 356 | 379 | 311 | 373 | 504.5 | 558.5 | 409 | 328.5 | 253.5 | 305 | 241.5 | 273.5 | 350.5 | 378 | 416 | 781.5 | 373 |
A dot on the chart and a dash in the table indicate missing data. Historical values do not describe today’s air quality.
Historical data by station 3
AIR QUALITY ARCHIVE · Aksaray
Aksaray
Station code: Aksaray
Monthly monitoring station data.
PM10Lowest 3 2017-11Highest 407 2017-022016-12 - 2018-10
O₃Lowest 1.41 2017-09Highest 11.1 2017-012016-12 - 2018-10
NO₂Lowest 50 2016-12Highest 122 2017-042016-12 - 2018-10
SO₂Lowest 4.02 2018-02Highest 11.7 2017-072016-12 - 2018-10
COLowest 482 2017-06Highest 864 2017-112016-12 - 2018-10
Scroll the chart or table sideways to see the full period.
| Pollutant | 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 | 2017-08 | 2017-07 | 2017-06 | 2017-05 | 2017-04 | 2017-03 | 2017-02 | 2017-01 | 2016-12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM10 | 36 | 36 | — | — | 45.4 | 51.6 | 60.2 | 65 | 48.1 | 61.9 | 39.4 | 3 | 78.6 | 62.3 | 51.9 | 51.2 | 57.4 | 61.6 | 69.7 | 63.7 | 407 | 36.8 | 37.2 |
| O₃ | 5 | 5 | — | — | 5.57 | 4.17 | 4 | 4.3 | 4.1 | 4.16 | 6.26 | 6.13 | 4.63 | 1.41 | 2.98 | 4.22 | 4.04 | 3.88 | 3.64 | 5.69 | 7.43 | 11.1 | 9.53 |
| NO₂ | 83 | 83 | — | — | 82.8 | 78.2 | 97.8 | 98.8 | 84.3 | 91.3 | 73 | 84.7 | 82.2 | 77.3 | 79.5 | 76.1 | 79 | 77.4 | 122 | 99.5 | 72.4 | 57.3 | 50 |
| SO₂ | 10 | 10 | — | — | 5.81 | 4.5 | 4.17 | 4.07 | 4.02 | 4.23 | 4.22 | 4.79 | 5.7 | 8.97 | 9.53 | 11.7 | 8.23 | 6.47 | 7.85 | 8.32 | 10.3 | 10.4 | 9.1 |
| CO | 606 | 606 | — | — | 545 | 564 | 710 | 756 | 621 | 745 | 583 | 864 | 817 | 656 | 506 | 609 | 482 | 545 | 700 | 755 | 831 | 694 | 744 |
A dot on the chart and a dash in the table indicate missing data. Historical values do not describe today’s air quality.
How should I interpret the data and averaging period? →
OpenAQ ↗Turkey
AIR QUALITY ARCHIVE · Sarıyer
Sarıyer
Station code: Sarıyer
Monthly monitoring station data.
PM10Lowest 10.7 2017-01Highest 35.1 2017-022016-12 - 2018-10
SO₂Lowest 3.44 2017-08Highest 20.4 2017-122016-12 - 2018-10
Scroll the chart or table sideways to see the full period.
| Pollutant | 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 | 2017-08 | 2017-07 | 2017-06 | 2017-05 | 2017-04 | 2017-03 | 2017-02 | 2017-01 | 2016-12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM10 | 32 | 32 | 32 | — | — | 22.6 | 27.9 | 33.9 | 23.1 | 28.4 | 26.2 | 29.4 | 31.8 | 27.2 | 21.4 | 16.6 | 21.5 | 23.4 | 26.7 | 30.8 | 35.1 | 10.7 | 19.9 |
| SO₂ | 5 | 5 | 5 | — | — | 5.55 | 6.8 | 4.77 | 9.8 | 12.1 | 20.4 | 6.13 | 5.19 | 4.39 | 3.44 | 5.24 | 7.31 | 10.4 | 15.6 | 13.9 | 13.5 | 14.3 | 9.76 |
A dot on the chart and a dash in the table indicate missing data. Historical values do not describe today’s air quality.
How should I interpret the data and averaging period? →
OpenAQ ↗Turkey
AIR QUALITY ARCHIVE · Çatladıkapı
Çatladıkapı
Station code: Çatladıkapı
Monthly monitoring station data.
PM10Lowest 4.57 2017-01Highest 42.1 2017-032016-12 - 2018-10
O₃Lowest 5.71 2017-04Highest 23.9 2017-082016-12 - 2018-10
NO₂Lowest 52.8 2017-07Highest 130 2017-042016-12 - 2018-10
COLowest 1 2017-02Highest 869 2017-012016-12 - 2018-10
Scroll the chart or table sideways to see the full period.
| Pollutant | 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 | 2017-08 | 2017-07 | 2017-06 | 2017-05 | 2017-04 | 2017-03 | 2017-02 | 2017-01 | 2016-12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM10 | 20 | 20 | — | — | 28 | 25.8 | 31.3 | 33.6 | 24.6 | 28.5 | 21 | 29.5 | 39.3 | 39.1 | 27.6 | 23.2 | 27 | 30.1 | 38.7 | 42.1 | 13.5 | 4.57 | 22.6 |
| O₃ | 12 | 12 | — | — | 20.2 | 22 | 13.1 | 12.6 | 15.1 | 9.21 | 9.82 | 8.74 | 10.4 | 19.8 | 23.9 | 17.8 | 11.1 | 14.3 | 5.71 | 7.74 | 10.7 | 17.3 | 13.9 |
| NO₂ | — | — | — | — | — | 65.1 | 86.3 | 72.2 | 57.4 | 60.3 | 58 | 64.4 | 78 | 97.3 | 58.9 | 52.8 | 98.3 | 106 | 130 | 112 | 114 | 86.7 | 73.6 |
| CO | 1 | 1 | — | — | 1 | 2 | 2 | 2 | 1 | 1 | 426 | 253 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 869 | 2 |
A dot on the chart and a dash in the table indicate missing data. Historical values do not describe today’s air quality.
How should I interpret the data and averaging period? →
OpenAQ ↗Turkey
Air quality in nearby cities
All cities →Turkey↗
Ümraniye
PM2.539
PM1048.1
µg/m³
PM2.5 · ModerateNO₂ 42.8O₃ 17
October 23, 202604:00
Turkey↗
Sultangazi
PM2.565.2
PM1076.1
µg/m³
PM2.5 · PoorNO₂ 59.6O₃ 2
October 23, 202604:00
Turkey↗
Bursa
PM2.59.1
PM1018.3
µg/m³
PM2.5 · FairNO₂ 2.7O₃ 60
October 23, 202604:00
Turkey↗
Eskişehir
PM2.59
PM1012
µg/m³
PM2.5 · FairNO₂ 10.3O₃ 28
October 23, 202604:00
Turkey↗
İzmir
PM2.519.6
PM1024.9
µg/m³
PM2.5 · ModerateNO₂ 39.5O₃ 27
October 23, 202604:00
Turkey↗
Ankara
PM2.512.2
PM1017.9
µg/m³
PM2.5 · FairNO₂ 25.6O₃ 34
October 23, 202604:00
Turkey↗
Konya
PM2.59
PM1011.9
µg/m³
PM2.5 · FairNO₂ 14.2O₃ 40
October 23, 202604:00
Turkey↗
Antalya
PM2.56.9
PM108.6
µg/m³
PM2.5 · FairNO₂ 4O₃ 43
October 23, 202604:00
Turkey · air quality in other cities
WEATHER & SURROUNDINGS
Istanbul · weather forecast
Daily maximum and minimum temperatures. Forecast point: 41.0053, 28.977.
Scroll the forecast to see the following days.
Istanbul · October 20, 2026: minimum temperature 14°C, maximum 20.9°C. Wind: 8.9 km/h. Humidity: 63%.
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 | 19.6 | 14 | 20.9 | 14 | 0.7 | 2.5 | 63 | 15 |
| 2026-10-21 | 20.2 | 13.2 | 21.7 | 14 | 0.6 | 2.1 | 64 | 1 |
| 2026-10-22 | 21.2 | 14.1 | 22.2 | 15.7 | 0.2 | 2.4 | 59 | 16 |
| 2026-10-23 | 21.5 | 14.6 | 22.7 | 14.6 | 4.8 | 3.6 | 60 | 97 |
| 2026-10-24 | 18.5 | 14 | 19.3 | 14.5 | 0.9 | 2.9 | 73 | 59 |
| 2026-10-25 | 18.4 | 13.6 | 20.1 | 15.9 | 1.9 | 3.3 | 78 | 100 |
| 2026-10-26 | 18.6 | 15.2 | 18.6 | 15.4 | 0.1 | 3.3 | 78 | 100 |
| 2026-10-27 | 17.3 | 14.7 | 17.4 | 16.4 | 0.4 | 5.8 | 82 | 100 |
| 2026-10-28 | 15.5 | 14.9 | 16.2 | 14.9 | 6.1 | 5.9 | 82 | 100 |
| 2026-10-29 | 16.1 | 13 | 16.8 | 14.3 | 0.1 | 5 | 56 | 23 |
| 2026-10-30 | 16.3 | 13 | 17.6 | 15.1 | 0.5 | 3.4 | 53 | 90 |
| 2026-10-31 | 14.3 | 12.2 | 14.5 | 12.2 | 3.3 | 6.2 | 65 | 100 |
| 2026-11-01 | 13.1 | 11.6 | 14 | 12.4 | 0.4 | 4.6 | 57 | 49 |
| 2026-11-02 | 14.4 | 11 | 15.9 | 13.3 | 9.9 | 4.5 | 56 | 2 |
| 2026-11-03 | 15.2 | 12.2 | 16.4 | 14 | 4.3 | 4.9 | 65 | 98 |
| 2026-11-04 | 16.1 | 13.5 | 16.2 | 14.4 | — | 5.4 | 66 | 100 |
| 2026-11-05 | 16.9 | 14 | 17.6 | 14.7 | — | 4.9 | 66 | 96 |
| 2026-11-06 | 16.3 | 13.9 | 17.2 | 17.2 | — | 3.6 | 69 | 100 |
UV index by day · Istanbul
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.
Istanbul · October 22, 2026: UV index: 3.2 .
| 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 | 3.2 | 2.9 | 2 | 3.8 | 3.1 | 1.1 | 1.2 | 3.6 | 3.4 | 1 | 2.8 | 3.4 | 3.1 | 2.3 | 3 | — |
Airborne pollen · Turkey
grains/m³ Data for a country reference point. Local conditions may differ.
Turkey · October 22, 2026: Alder: 0 grains/m³. Birch: 0 grains/m³. Grass: 1 grains/m³. Mugwort: 0 grains/m³. Olive: 0 grains/m³. Ragweed: 0 grains/m³.
| Indicator | 2026-10-22 | 2026-10-23 | 2026-10-24 | 2026-10-25 |
|---|---|---|---|---|
| Alder | 0 | 0 | 0 | 0 |
| Birch | 0 | 0 | 0 | 0 |
| Grass | 1 | 0.8 | 0.5 | 0.1 |
| Mugwort | 0 | 0 | 0 | 0 |
| Olive | 0 | 0 | 0 | 0 |
| Ragweed | 0 | 0 | 0 | 0 |
AIR QUALITY QUESTIONS
Istanbul · air pollution - questions and answers
What do the latest air quality data show for Istanbul?
Istanbul - latest available concentrations (October 23, 2026, 04:00 local time): PM2.5: 49.6 µg/m³, PM10: 58.5 µg/m³, O₃: 2 µg/m³, NO₂: 63.6 µg/m³, SO₂: 21.8 µg/m³, CO: 295 µg/m³. These are hourly CAMS model values for a point representing the city.
When was PM2.5 highest in Istanbul over the past week?
The highest available daily mean PM2.5 was 44 µg/m³ (October 22, 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.
What period does the pollution history for Istanbul cover?
Available monthly means cover 2016-12 - 2018-10. The tables include PM10, O₃, NO₂, SO₂, CO. 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 Istanbul 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 Istanbul?
For October 22, 2026, the forecast UV index is 3.2. The UV section also shows the following available days.
What wind speed is forecast for Istanbul?
For October 20, 2026, forecast wind speed is 8.9 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.