Worst air pollution Frosinone, today and tomorrow

Today (9 August): Air quality in Frosinone is fair. HCHO and PM1 are fair; AQI, NO2, and O3 are medium; PM2.5, PM10, SO2, and CO are good. Pollution peaks around 4:00 PM (O3: 50.3/100).
Tomorrow (10 August 2026): Air quality in Frosinone is fair. HCHO decreases to good; all other pollutants stay as today. Pollution peaks around 5:00 PM (O3: 56.0/100). Airmine updates local air quality forecasts four times daily.

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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

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The dominant influence on Frosinone's air quality is vehicle traffic on the A1 and Sacco valley manufacturing, layered onto a setting in the Lazio's Sacco valley south of Rome within Lazio. Ventilation here depends heavily on wind and rainfall, with the calmest, most stagnant periods generally producing the least favourable readings.

Today - 9 August | Pollution peaks at 16:00

AQI:

Medium

50.3/100

PM2.5 (fine particles):

Good

19.9/100

PM10 (coarse particles):

Good

7.0/100

NO2 (nitrogen dioxide):

Medium

46.6/100

O3 (ozone):

Medium

50.3/100

SO2 (sulfur dioxide):

Good

4.0/100

CO (carbon monoxide):

Good

0.0/100

HCHO (formaldehyde):

Fair

21.2/100

PM1 (ultrafine particles):

Fair

22.5/100

Levels show the poorest local air quality during the day

Tomorrow - 10 August | Pollution peaks at 17:00

AQI:

Medium

56.0/100

PM2.5 (fine particles):

Good

19.5/100

PM10 (coarse particles):

Good

6.6/100

NO2 (nitrogen dioxide):

Medium

45.4/100

O3 (ozone):

Medium

56.0/100

SO2 (sulfur dioxide):

Good

3.1/100

CO (carbon monoxide):

Good

0.0/100

HCHO (formaldehyde):

Good

16.5/100

PM1 (ultrafine particles):

Fair

22.1/100

Pollen forecast in Frosinone

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Frequently Asked Questions

Is air quality bad in Frosinone right now?

On 9 August 2026, overall air quality in Frosinone is fair. PM1 is the main pollutant at 22.5/100. Pollution peaks around 4:00 PM (O3: 50.3/100).

Will air quality be worse tomorrow in Frosinone?

On 10 August 2026, air quality conditions in Frosinone will be similar to today, with PM1 forecast at fair at 22.1/100. Pollution peaks around 5:00 PM (O3: 56.0/100).

When is air pollution at its worst in Frosinone?

Residents in Frosinone are most likely to notice reduced air quality when plane and pine pollen peaks, or during spells of vehicle traffic on the A1 and Sacco valley manufacturing; conditions generally improve once the season shifts and stronger winds or rainfall return to clear the Lazio air. Outside these periods, most days bring reasonably steady, breathable conditions across the town.

Are air quality levels in Frosinone 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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