Worst air pollution Castellammare di Stabia, today and tomorrow
Today (20 September): Air quality in Castellammare di Stabia is moderate. AQI, PM2.5, and PM1 are moderate; PM10, NO2, and O3 are fair; SO2, CO, and HCHO are good. Pollution peaks around 2:00 AM (PM1: 46.1/100).
Tomorrow (21 September 2026): Air quality in Castellammare di Stabia is moderate. NO2 increases to moderate; HCHO increases to fair; all other pollutants stay as today. Pollution peaks around 9:00 AM (PM1: 52.2/100). Airmine updates local air quality forecasts four times daily.
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Castellammare di Stabia's air quality reflects the Gulf of Naples coastal position between Vesuvius and the Sorrentine Peninsula, with vehicle traffic on the A3 motorway and surrounding industrial and port operations contributing local sources alongside Vesuvius's persistent fumarolic SO₂ background. The Bay of Naples sea breezes provide maritime ventilation, while the volcanic degassing contributes distinctive geogenic emissions and the dense Campanian coastal plain's concentration of traffic and industry maintains elevated readings throughout the year.
Today - 20 September | Pollution peaks at 02:00
AQI:
Moderate
46.1/100
PM2.5 (fine particles):
Moderate
42.4/100
PM10 (coarse particles):
Fair
27.4/100
NO2 (nitrogen dioxide):
Fair
34.5/100
O3 (ozone):
Fair
32.6/100
SO2 (sulfur dioxide):
Good
1.4/100
CO (carbon monoxide):
Good
1.0/100
HCHO (formaldehyde):
Good
19.8/100
PM1 (ultrafine particles):
Moderate
46.1/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 09:00
AQI:
Moderate
52.2/100
PM2.5 (fine particles):
Moderate
44.0/100
PM10 (coarse particles):
Fair
28.6/100
NO2 (nitrogen dioxide):
Moderate
50.0/100
O3 (ozone):
Fair
36.2/100
SO2 (sulfur dioxide):
Good
1.8/100
CO (carbon monoxide):
Good
1.3/100
HCHO (formaldehyde):
Fair
22.1/100
PM1 (ultrafine particles):
Moderate
52.2/100
Pollen forecast in Castellammare di Stabia
View pollen forecastFrequently Asked Questions
Is air quality bad in Castellammare di Stabia right now?
On 20 September 2026, overall air quality in Castellammare di Stabia is moderate. AQI is the main air quality indicator at 46.1/100. Pollution peaks around 2:00 AM (PM1: 46.1/100).
Will air quality be worse tomorrow in Castellammare di Stabia?
On 21 September 2026, air quality conditions in Castellammare di Stabia will be similar to today, with AQI forecast at moderate at 52.2/100. Pollution peaks around 9:00 AM (PM1: 52.2/100).
When is air pollution at its worst in Castellammare di Stabia?
The most noticeable dips in Castellammare di Stabia's air quality come when olive and pine pollen peaks, or because of vehicle traffic on the A3 motorway and surrounding industrial and port operations; wind and rain both help clear the air fairly quickly here.
Are air quality levels in Castellammare di Stabia 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 20:27 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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