Is the air in Milan safe today?

For most people, yes. Right now the US AQI in Milan is 61, which counts as moderate. Acceptable. Unusually sensitive people should ease off long, intense outdoor effort.

When is the best time to be outside in Milan?

Sat 12:00–15:00. That is the cleanest stretch in the next 24 hours, with the US AQI averaging about 54. The worst hour is around Fri 20:00, at 76.

What is the main pollutant in Milan?

Fine particles (PM2.5). It drives the index right now, at 15 µg/m³. Tiny particles from combustion, fires and dust that reach deep into the lungs. The main driver of AQI worldwide.

How does Milan's air compare with the WHO guideline?

About at the guideline. Over the next 24 hours PM2.5 averages about 15 µg/m³, against the World Health Organization's 24-hour guideline of 15 µg/m³. The other pollutants stay within their guideline levels.

How many cigarettes is a day of Milan's air?

About 0.7 cigarettes. Over the next 24 hours PM2.5 averages about 15 µg/m³. By Berkeley Earth's rule of thumb, 22 µg/m³ breathed for a day is roughly one cigarette.

Will air quality in Milan improve this week?

Today looks cleanest. Its AQI peaks at 76, against 130 on Tuesday, the worst day in the forecast.

Milan air quality

Italy · Live AQI and hourly forecast for the next 5 days · valid Fri 18:00 local time

Moderate

US AQI, mostly PM_2.5

Model estimate. Nearby measurements are shown separately.

Acceptable. Unusually sensitive people should ease off long, intense outdoor effort.

Next 24 hours: 53–76US AQI, highest around Fri 20:00
Best time outside: Sat 12:00–15:00US AQI about 54
PM_2.5 vs WHO guideline: 1.0×15 µg/m³ over 24 h, guideline 15
Cigarette equivalent: ≈ 0.7 a dayBerkeley Earth rule of thumb

Loading the live globe…

The live globe, centred on Milan. Switch pollutants, drag through the next 5 days or press play. Full map →

Pollutants in Milan right now

Pollutant	Now	Level	Next 24 h vs WHO
Fine particles PM_2.5	15 µg/m³	Moderate	1.0×
Coarse particles PM₁₀	18 µg/m³	Good	0.4×
Nitrogen dioxide NO₂	41 µg/m³	Good	1.0×
Ozone O₃	20 µg/m³	Good	0.5×
Sulphur dioxide SO₂	2.1 µg/m³	Good	0.0×
Carbon monoxide CO	290 µg/m³	Good	0.1×
Aerosol optical depth	0.20	Whole atmosphere · dimensionless
Desert dust	0 µg/m³	Modelled surface dust
UV index	0	Low

“Next 24 h vs WHO” compares the forecast with the World Health Organization’s 2021 guideline levels: 24-hour means of 15 µg/m³ for PM_2.5, 45 for PM₁₀, 25 for NO₂, 40 for SO₂ and 4 mg/m³ for CO, and 100 µg/m³ over 8 hours for ozone. Above 1× is above the guideline. Levels follow the US AQI, which is far less strict than the WHO, so air rated Good can still be above a guideline.

Next 48 hours

Hourly US AQI. Highest 122 around Sun 01:00, lowest 53 around Sat 13:00.

50100

Good 0–50Moderate 51–100Sensitive 101–150Unhealthy 151–200Very unhealthy 201–300Hazardous 301+

5-day air quality forecast for Milan

Daily range of the hourly US AQI, from lowest to highest, on a scale of 0 to 150.

Day	US AQI	At worst	Worst hour	PM_2.5 avg	UV max
Fri 13 Nov	47–76	Moderate	20:00	16	2 Low
Sat 14 Nov	53–120	Sensitive	22:00	19	1 Low
Sun 15 Nov	62–122	Sensitive	1:00	28	1 Low
Mon 16 Nov	85–122	Sensitive	21:00	36	1 Low
Tue 17 Nov	72–130	Sensitive	20:00	34	1 Low

Common questions about the air in Milan

Is the air in Milan safe today?
For most people, yes. Right now the US AQI in Milan is 61, which counts as moderate. Acceptable. Unusually sensitive people should ease off long, intense outdoor effort.
When is the best time to be outside in Milan?
Sat 12:00–15:00. That is the cleanest stretch in the next 24 hours, with the US AQI averaging about 54. The worst hour is around Fri 20:00, at 76.
What is the main pollutant in Milan?
Fine particles (PM_2.5). It drives the index right now, at 15 µg/m³. Tiny particles from combustion, fires and dust that reach deep into the lungs. The main driver of AQI worldwide.
How does Milan's air compare with the WHO guideline?
About at the guideline. Over the next 24 hours PM_2.5 averages about 15 µg/m³, against the World Health Organization's 24-hour guideline of 15 µg/m³. The other pollutants stay within their guideline levels.
How many cigarettes is a day of Milan's air?
About 0.7 cigarettes. Over the next 24 hours PM_2.5 averages about 15 µg/m³. By Berkeley Earth's rule of thumb, 22 µg/m³ breathed for a day is roughly one cigarette.
Will air quality in Milan improve this week?
Today looks cleanest. Its AQI peaks at 76, against 130 on Tuesday, the worst day in the forecast.

Measured near Milan

Station and measurements	Distance	US AQI	Level
Unnamed sensor OpenAQ, low-cost sensor PM_2.5: 27 µg/m³ · Fri 18:00	0.3 km	83	Moderate
Unnamed sensor OpenAQ, low-cost sensor PM_2.5: 21 µg/m³ · Fri 18:00	2.1 km	74	Moderate
Unnamed sensor Sensor.Community, low-cost sensor PM_2.5: 3.0 µg/m³ · Fri 18:39 PM₁₀: 4.5 µg/m³ · Fri 18:39	2.4 km	17	Good

Air quality near Milan

US AQI right now. Cleanest nearby: Lyon (40); worst: Munich (47). The tick on each bar is Milan, at 61.

Zurich 218 km N 46 Good
Lyon 340 km W 40 Good
Munich 348 km NE 47 Good
Marseille 388 km SW 46 Good
Rome 477 km SE 44 Good
Frankfurt 518 km N 44 Good

All 162 cities →

About this forecast

Forecast from CAMS Europe and global via Open-Meteo: the Copernicus Atmosphere Monitoring Service (CAMS) model at about 40 km resolution (about 10 km inside Europe). Global runs update every 12 hours and European runs every 24 hours. Models smooth out street-level peaks, so busy roads and industrial sites can be worse than shown. Nearby station measurements are independent observations, not adjustments to the forecast. The point forecast uses Open-Meteo’s CAMS products, including a separate carbon monoxide product; it can differ from the globe’s global grid. The AQI rates each hour on the US EPA scale, the same way the map colors it; official daily figures average over 24 hours (8 for ozone), so they can read lower after a short peak. Readings for 45.46°N, 9.19°E, valid 2026-11-13 17:00 UTC.