Highest air pollution Heidelberg, today and tomorrow
Today (30 June): Air quality in Heidelberg is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 2:00 PM (O3: 39.9/100).
Tomorrow (1 July 2026): Air quality in Heidelberg is fair. NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 5:00 PM (O3: 38.2/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Heidelberg's air quality reflects its position in the Neckar valley at the northern edge of the Odenwald, with vehicle traffic on the A5 and B37 and the surrounding pharmaceutical and technology industry contributing local sources. The Odenwald hills to the south and the Rheinebene plain to the west create topographic variation, while the Neckar valley's partial enclosure can concentrate emissions under calm winter conditions. The university city's relatively clean economic profile and the Rhine valley ventilation generally keep readings at moderate southwestern German levels.
Today - 30 June | Pollution peaks at 14:00
AQI:
Fair
39.9/100
PM2.5 (fine particles):
Good
6.4/100
PM10 (coarse particles):
Good
2.2/100
NO2 (nitrogen dioxide):
Good
15.5/100
O3 (ozone):
Fair
39.9/100
SO2 (sulfur dioxide):
Good
2.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.0/100
PM1 (ultrafine particles):
Good
7.4/100
Levels show the poorest local air quality during the day
Tomorrow - 1 July | Pollution peaks at 17:00
AQI:
Fair
38.2/100
PM2.5 (fine particles):
Good
7.9/100
PM10 (coarse particles):
Good
2.5/100
NO2 (nitrogen dioxide):
Fair
20.2/100
O3 (ozone):
Fair
38.2/100
SO2 (sulfur dioxide):
Good
4.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.4/100
PM1 (ultrafine particles):
Good
9.3/100
Pollen forecast in Heidelberg
View pollen forecastFrequently Asked Questions
Is air quality bad in Heidelberg right now?
On 30 June 2026, overall air quality in Heidelberg is fair. AQI is the main air quality indicator at 39.9/100. Pollution peaks around 2:00 PM (O3: 39.9/100).
Will air quality be worse tomorrow in Heidelberg?
On 1 July 2026, air quality conditions in Heidelberg will be similar to today, with AQI forecast at fair at 38.2/100. Pollution peaks around 5:00 PM (O3: 38.2/100).
Are air quality levels in Heidelberg 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.
Want to see air quality forecasts for other cities in Germany?
Check air quality in other popular cities:
Data provided by Airmine — Last update: 30 June 2026 at 13:03 CET (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.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team