CAMS model • Open-Meteo
San MarinoAir 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.
San Marino - current concentrations are unavailable in this dataset. Explore the other available data and their dates below.
Air quality questions →All cities · San Marino
0 citiesPM2.5 vs PM10 - what is the difference? → · Models and monitoring stations →
Environment and quality of life ratings · San Marino
Archived ratings of the local environment: green spaces, cleanliness, noise and water quality. Opinion indicators are separate from pollutant concentration measurements.
| Indicator | San Marino | Italy | Croatia | Slovenia | Bosnia and Herzegovina | Austria |
|---|---|---|---|---|---|---|
| Green and Parks in the City | 75% | 53% | 73% | 87% | 54% | 78% |
| Pleasure of spending time in the city | 100% | 56% | 81% | 88% | 53% | 84% |
| Air Pollution | 6.8% | 50% | 29% | 26% | 62% | 21% |
| Garbage Disposal | 50% | 51% | 58% | 87% | 49% | 84% |
| Availability and quality of drinking water | 100% | 69% | 86% | 96% | 71% | 91% |
| Cleanliness and tidiness | 75% | 45% | 68% | 87% | 50% | 82% |
| Noise and Light pollution | 75% | 48% | 34% | 37% | 38% | 34% |
| Water Pollution | 0% | 41% | 25% | 17% | 45% | 14% |
WEATHER & SURROUNDINGS
San Marino · weather forecast
Daily maximum and minimum temperatures. Forecast point: 43.7667, 12.4167.
Scroll the forecast to see the following days.
San Marino · September 23, 2026: minimum temperature 12.1°C, maximum 20°C. Wind: 13.6 km/h. Humidity: 40%.
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 | 19.4 | 12.1 | 20 | 12.7 | 0.1 | 3.8 | 40 | 1 |
| 2026-09-24 | 22.4 | 10.4 | 23.3 | 16.2 | 1.8 | 4.6 | 35 | 61 |
| 2026-09-25 | 18.8 | 13 | 18.8 | 13 | 1.7 | 4.6 | 44 | 9 |
| 2026-09-26 | 19.1 | 10.2 | 19.1 | 12.3 | 0.1 | 3.3 | 51 | 7 |
| 2026-09-27 | 20.1 | 10.7 | 20.6 | 13.4 | 9.5 | 2.2 | 46 | 46 |
| 2026-09-28 | 21.8 | 12.2 | 21.8 | 14.7 | 18.6 | 2.5 | 41 | 62 |
| 2026-09-29 | 22.2 | 12.6 | 22.2 | 14.7 | 7.4 | 2.5 | 37 | 16 |
| 2026-09-30 | 21.2 | 12.3 | 21.2 | 13.1 | 2.1 | 2.9 | 49 | 100 |
| 2026-10-01 | 19 | 11.5 | 20.9 | 11.6 | 2.1 | 4.1 | 43 | 20 |
| 2026-10-02 | 18.9 | 10.9 | 21.5 | 12.3 | 9.5 | 3.6 | 47 | 53 |
| 2026-10-03 | 19.7 | 11.4 | 22.2 | 13.6 | 3.1 | 3.6 | 43 | 31 |
| 2026-10-04 | 19.7 | 12.3 | 22.2 | 13.5 | 0.5 | 4.1 | 40 | 19 |
| 2026-10-05 | 19.9 | 12.1 | 22.8 | 13.6 | — | 4.7 | 36 | 5 |
| 2026-10-06 | 21.6 | 11 | 24.6 | 11 | 4.4 | 4.3 | 40 | 6 |
| 2026-10-07 | 16.2 | 9.4 | 16.9 | 13.5 | 0.2 | 8.4 | 49 | 100 |
| 2026-10-08 | 13 | 11 | 13 | 11 | 12 | 10.3 | 74 | 91 |
| 2026-10-09 | 14.1 | 9.6 | 15.6 | 10.3 | 2.8 | 3.6 | 73 | 31 |
| 2026-10-10 | 13.2 | 10.5 | 15.5 | 15.5 | 3.3 | 2.6 | 89 | 92 |
UV index by day · San Marino
Data for a country reference point. Local conditions may differ.
Seek shade around midday. SPF 30+, sunglasses and a hat for longer stays.
Scroll the forecast to see the following days.
San Marino · September 25, 2026: UV index: 5.2 .
| 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 | 5.2 | 5.2 | 5.1 | 5.1 | 5 | 4.7 | 4.6 | 4.6 | 4.5 | 4.5 | 4.4 | 4.4 | 2.6 | 2.6 | 3.4 | — |
Airborne pollen · San Marino
grains/m³ Data for a country reference point. Local conditions may differ.
San Marino · September 25, 2026: Alder: 0 grains/m³. Birch: 0 grains/m³. Grass: 0.6 grains/m³. Mugwort: 0.6 grains/m³. Olive: 0 grains/m³. Ragweed: 0 grains/m³.
| Indicator | 2026-09-25 | 2026-09-26 | 2026-09-27 | 2026-09-28 |
|---|---|---|---|---|
| Alder | 0 | 0 | 0 | 0 |
| Birch | 0 | 0 | 0 | 0 |
| Grass | 0.6 | 0.8 | 0.7 | 0.4 |
| Mugwort | 0.6 | 0.9 | 1 | 0.3 |
| Olive | 0 | 0 | 0 | 0 |
| Ragweed | 0 | 0 | 0 | 0 |
AIR QUALITY QUESTIONS
San Marino · air pollution - questions and answers
Is the PM2.5 concentration for San Marino 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 San Marino?
For September 25, 2026, the forecast UV index is 5.2. The UV section also shows the following available days.
What wind speed is forecast for San Marino?
For September 23, 2026, forecast wind speed is 13.6 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.