Worst air pollution St. Leonhard - Graz, today and tomorrow
Today (16 July): Air quality in St. Leonhard is medium. AQI and O3 are medium; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 PM (O3: 46.2/100).
Tomorrow (17 July 2026): Air quality in St. Leonhard is fair. NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 12:00 PM (O3: 47.3/100). 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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St. Leonhard's air quality benefits from the Stadtpark's green buffer in eastern Graz, though vehicle traffic on surrounding streets still contributes to the enclosed Graz basin's characteristic pollution challenges.
Today - 16 July | Pollution peaks at 16:00
AQI:
Medium
46.2/100
PM2.5 (fine particles):
Good
7.0/100
PM10 (coarse particles):
Good
3.2/100
NO2 (nitrogen dioxide):
Good
19.4/100
O3 (ozone):
Medium
46.2/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.0/100
PM1 (ultrafine particles):
Good
8.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 12:00
AQI:
Medium
47.3/100
PM2.5 (fine particles):
Good
11.5/100
PM10 (coarse particles):
Good
3.3/100
NO2 (nitrogen dioxide):
Fair
21.8/100
O3 (ozone):
Medium
47.3/100
SO2 (sulfur dioxide):
Good
1.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.8/100
PM1 (ultrafine particles):
Good
15.5/100
Other Landmarks in Graz
Sports venues in Graz
Frequently Asked Questions
Is air quality bad in St. Leonhard right now?
On 16 July 2026, overall air quality in St. Leonhard is medium. AQI is the main air quality indicator at 46.2/100. Pollution peaks around 4:00 PM (O3: 46.2/100).
Will air quality be worse tomorrow in St. Leonhard?
On 17 July 2026, air quality conditions in St. Leonhard will be worse than today, with NO2 forecast at fair at 21.8/100. Pollution peaks around 12:00 PM (O3: 47.3/100).
When is air pollution at its worst in St. Leonhard?
Air quality at St. Leonhard is typically worst on calm winter mornings, when vehicle traffic and legacy industry settle under a temperature inversion within the Mur River basin. Summer generally brings noticeably better dispersion, though hot, still afternoons can occasionally raise ozone. Spring and autumn tend to be the steadiest, cleanest stretches of the year.
Are air quality levels in St. Leonhard 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 Austria?
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 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.
For long term forecasts and maps, see the Airmine app