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Air quality · Baden-Wurttemberg, Germany

Stuttgart Air Quality Index (AQI) today

Modelled estimate for 14:00 local time (UTC+1), refreshed 3 Nov, 07:52 UTC+0.

55 Moderate

Live estimate · modelled

US EPA AQI14:00 UTC+1, 3 Nov Main pollutant: PM2.5

Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.

This page uses EPA’s NowCast, which follows the last few hours, as the US government’s AirNow does. On a 24-hour average of particles, as many apps show, it is 55.

Over the next 24 hours the model expects the AQI to range from 48 around 05:00 to 56 around 20:00 (3 Nov).

582nd most polluted of 849 cities worldwide right now, 2nd of 7 in Germany.

What to do today

  • Long walk or run outside OK, lighter if very sensitive
  • Kids playing outside OK
  • Airing the house Open
  • Mask outdoors Not needed

Based on the US EPA’s health statement: “Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.” General guidance, not medical advice.

Last 24 hours and next 48

Past hours Forecast

15:00 · 39 16:00 · 43 17:00 · 48 18:00 · 52 19:00 · 55 20:00 · 57 21:00 · 57 22:00 · 57 23:00 · 57 00:00 · 56 01:00 · 55 02:00 · 54 03:00 · 54 04:00 · 55 05:00 · 55 06:00 · 55 07:00 · 56 08:00 · 57 09:00 · 58 10:00 · 58 11:00 · 57 12:00 · 56 13:00 · 55 14:00 · 55 15:00 · 54 16:00 · 54 17:00 · 54 18:00 · 54 19:00 · 55 20:00 · 56 21:00 · 55 22:00 · 55 23:00 · 55 00:00 · 54 01:00 · 53 02:00 · 52 03:00 · 51 04:00 · 49 05:00 · 48 06:00 · 49 07:00 · 51 08:00 · 52 09:00 · 53 10:00 · 53 11:00 · 52 12:00 · 52 13:00 · 52 14:00 · 51 15:00 · 51 16:00 · 52 17:00 · 52 18:00 · 54 19:00 · 55 20:00 · 56 21:00 · 57 22:00 · 57 23:00 · 57 00:00 · 56 01:00 · 56 02:00 · 55 03:00 · 55 04:00 · 55 05:00 · 55 06:00 · 56 07:00 · 56 08:00 · 57 Now

US EPA AQI per hour, UTC+1. Particles use EPA’s NowCast (a 12-hour weighted average), ozone and CO an 8-hour average. Lighter bars are the CAMS forecast.

Show as a table
TimeAQI
Mon 15:0039
Mon 16:0043
Mon 17:0048
Mon 18:0052
Mon 19:0055
Mon 20:0057
Mon 21:0057
Mon 22:0057
Mon 23:0057
Tue 00:0056
Tue 01:0055
Tue 02:0054
Tue 03:0054
Tue 04:0055
Tue 05:0055
Tue 06:0055
Tue 07:0056
Tue 08:0057
Tue 09:0058
Tue 10:0058
Tue 11:0057
Tue 12:0056
Tue 13:0055
Tue 14:00 · Now55
Tue 15:00 · Forecast54
Tue 16:00 · Forecast54
Tue 17:00 · Forecast54
Tue 18:00 · Forecast54
Tue 19:00 · Forecast55
Tue 20:00 · Forecast56
Tue 21:00 · Forecast55
Tue 22:00 · Forecast55
Tue 23:00 · Forecast55
Wed 00:00 · Forecast54
Wed 01:00 · Forecast53
Wed 02:00 · Forecast52
Wed 03:00 · Forecast51
Wed 04:00 · Forecast49
Wed 05:00 · Forecast48
Wed 06:00 · Forecast49
Wed 07:00 · Forecast51
Wed 08:00 · Forecast52
Wed 09:00 · Forecast53
Wed 10:00 · Forecast53
Wed 11:00 · Forecast52
Wed 12:00 · Forecast52
Wed 13:00 · Forecast52
Wed 14:00 · Forecast51
Wed 15:00 · Forecast51
Wed 16:00 · Forecast52
Wed 17:00 · Forecast52
Wed 18:00 · Forecast54
Wed 19:00 · Forecast55
Wed 20:00 · Forecast56
Wed 21:00 · Forecast57
Wed 22:00 · Forecast57
Wed 23:00 · Forecast57
Thu 00:00 · Forecast56
Thu 01:00 · Forecast56
Thu 02:00 · Forecast55
Thu 03:00 · Forecast55
Thu 04:00 · Forecast55
Thu 05:00 · Forecast55
Thu 06:00 · Forecast56
Thu 07:00 · Forecast56
Thu 08:00 · Forecast57

Pollutants this hour

  • PM2.5 9.9 µg/m³ 24-hour mean 11.4 µg/m³ · within WHO’s 24-hour guideline (15) 55
  • PM10 12 µg/m³ 11
  • O₃ 50 µg/m³ 17
  • NO₂ 7 µg/m³ 3
  • SO₂ 1 µg/m³ 0
  • CO 0.20 mg/m³ 1

Modelled concentrations at the city’s location (CAMS). The sub-index uses the same averaging as the headline, so the highest one is the AQI.

Nearby cities

City AQI
Frankfurt am Main Hesse 49
Zurich Switzerland 54
Munich Bavaria 55
Bern Switzerland 53
Cologne North Rhine-Westphalia 42
Düsseldorf North Rhine-Westphalia 51
Milan Italy 75

Where this number comes from

The Copernicus Atmosphere Monitoring Service (CAMS) forecasts air pollution worldwide on a grid (about 11 km over Europe, about 45 km elsewhere). We take the grid value at Stuttgart’s coordinates and score it with the US EPA’s method. It is a model, not a measurement: a nearby monitoring station can read quite differently, especially next to busy roads or during fires and dust storms.

Full methodology · Data: CAMS via Open-Meteo (CC BY 4.0); city list: GeoNames (CC BY 4.0).

  • Good 0–50
  • Moderate 51–100
  • Unhealthy for sensitive groups 101–150
  • Unhealthy 151–200
  • Very unhealthy 201–300
  • Hazardous 301–500

Questions

What is the AQI in Stuttgart right now?
55 on the US EPA scale (Moderate) at 14:00 UTC+1, 3 Nov. PM2.5 is the pollutant with the highest sub-index. This is a modelled estimate from the Copernicus Atmosphere Monitoring Service (CAMS), not a reading from a monitoring station.

Is it safe to exercise outside in Stuttgart today?
For most people, yes. The EPA’s statement for “Moderate”: Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. General guidance, not medical advice.

Will the air in Stuttgart get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 48 around 05:00 to 56 around 20:00 (3 Nov). Forecasts beyond a day are less certain.

How does Stuttgart compare with other cities?
Right now it is the 582nd most polluted of 849 cities we track worldwide, and 2nd of 7 in Germany, all on the same US EPA scale.

Why does another app show a different AQI for Stuttgart?
Apps differ in source (government stations, low-cost sensors or a model like this one), in scale (US EPA, European, or a national index) and in averaging (hourly or NowCast, 8-hour, 24-hour). This page uses the US EPA AQI with EPA’s NowCast for particles, computed from the CAMS forecast for the city’s location.