Worst air pollution Busto Arsizio, today and tomorrow
Today (9 August): Air quality in Busto Arsizio is fair. PM1 is fair; AQI and O3 are medium; PM2.5, PM10, NO2, SO2, CO, and HCHO are good. Pollution peaks around 3:00 PM (O3: 57.4/100).
Tomorrow (10 August 2026): Air quality in Busto Arsizio is fair. All pollutants stay as today. Pollution peaks around 1:00 PM (O3: 58.4/100). Airmine updates local air quality forecasts four times daily.
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Busto Arsizio's air quality faces the Po Valley's enclosed flat basin in the Varese province, with vehicle traffic on the A8 motorway and surrounding textile and manufacturing industry contributing elevated PM2.5 alongside the persistent winter anticyclone trapping. The flat Lombardy plain concentrates all emission sources under winter inversions, while the Malpensa Airport's aviation operations nearby contribute additional NOₓ and ultrafine particles to the local air quality profile.
Today - 9 August | Pollution peaks at 15:00
AQI:
Medium
57.4/100
PM2.5 (fine particles):
Good
16.2/100
PM10 (coarse particles):
Good
4.6/100
NO2 (nitrogen dioxide):
Good
1.2/100
O3 (ozone):
Medium
57.4/100
SO2 (sulfur dioxide):
Good
0.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
14.2/100
PM1 (ultrafine particles):
Fair
21.3/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 13:00
AQI:
Medium
58.4/100
PM2.5 (fine particles):
Good
19.0/100
PM10 (coarse particles):
Good
5.6/100
NO2 (nitrogen dioxide):
Good
2.8/100
O3 (ozone):
Medium
58.4/100
SO2 (sulfur dioxide):
Good
0.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
15.2/100
PM1 (ultrafine particles):
Fair
23.8/100
Pollen forecast in Busto Arsizio
View pollen forecastFrequently Asked Questions
Is air quality bad in Busto Arsizio right now?
On 9 August 2026, overall air quality in Busto Arsizio is fair. PM1 is the main pollutant at 21.3/100. Pollution peaks around 3:00 PM (O3: 57.4/100).
Will air quality be worse tomorrow in Busto Arsizio?
On 10 August 2026, air quality conditions in Busto Arsizio will be similar to today, with PM1 forecast at fair at 23.8/100. Pollution peaks around 1:00 PM (O3: 58.4/100).
When is air pollution at its worst in Busto Arsizio?
In Busto Arsizio, reduced air quality is most noticeable when oak and linden pollen peaks, and on days affected by vehicle traffic on the A8 motorway and nearby textile and manufacturing industry; conditions generally improve once the season shifts and rainfall or stronger winds return.
Are air quality levels in Busto Arsizio 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: 9 August 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.
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