Worst air pollution San Remo, today and tomorrow
Today (20 September): Air quality in San Remo is moderate. AQI and PM2.5 are moderate; PM1 is fair; PM10, NO2, O3, SO2, CO, and HCHO are good. Pollution peaks around 4:00 AM (PM2.5: 42.9/100).
Tomorrow (21 September 2026): Air quality in San Remo is fair. AQI improves to fair; PM2.5 decreases to fair; PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 4:00 PM (PM2.5: 38.3/100). Airmine updates local air quality forecasts four times daily.
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San Remo's air quality benefits from its exceptional Ligurian Riviera dei Fiori coastal position, with consistent Mediterranean sea breezes and the powerful Tramontane providing reliable maritime ventilation along this famous flower and casino resort coast. Vehicle traffic on the A10 motorway is the primary local source, while the surrounding Maritime Alps rising steeply inland create dramatic topographic variation and the Mediterranean coastal exposure generally maintains San Remo among northwestern Italy's more moderately ventilated coastal environments.
Today - 20 September | Pollution peaks at 04:00
AQI:
Moderate
42.9/100
PM2.5 (fine particles):
Moderate
42.9/100
PM10 (coarse particles):
Good
18.8/100
NO2 (nitrogen dioxide):
Good
14.3/100
O3 (ozone):
Good
18.2/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.7/100
HCHO (formaldehyde):
Good
5.3/100
PM1 (ultrafine particles):
Fair
27.1/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 16:00
AQI:
Fair
38.3/100
PM2.5 (fine particles):
Fair
38.3/100
PM10 (coarse particles):
Good
17.0/100
NO2 (nitrogen dioxide):
Good
17.7/100
O3 (ozone):
Good
18.1/100
SO2 (sulfur dioxide):
Good
1.0/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
6.0/100
PM1 (ultrafine particles):
Good
19.0/100
Pollen forecast in San Remo
View pollen forecastFrequently Asked Questions
Is air quality bad in San Remo right now?
On 20 September 2026, overall air quality in San Remo is moderate. AQI is the main air quality indicator at 42.9/100. Pollution peaks around 4:00 AM (PM2.5: 42.9/100).
Will air quality be worse tomorrow in San Remo?
On 21 September 2026, air quality conditions in San Remo will be better than today, with AQI forecast at fair at 38.3/100. Pollution peaks around 4:00 PM (PM2.5: 38.3/100).
When is air pollution at its worst in San Remo?
You're most likely to spot worse air in San Remo when local tree and grass allergens peaks, or due to vehicle traffic on the A10 motorway is the primary local source; outside of those periods, conditions here remain among the more favourable in the region.
Are air quality levels in San Remo based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 20 September 2026 at 14:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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