Worst air pollution Masans - Chur, today and tomorrow
Today (16 July): Air quality in Masans is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 39.1/100).
Tomorrow (17 July 2026): Air quality in Masans is fair. All pollutants stay as today. Pollution peaks around 3:00 PM (O3: 35.9/100). 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
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Masans' air quality reflects its northern Chur position along the Rhine, with vehicle traffic on regional roads contributing local sources within the valley's characteristic winter inversion tendency.
Today - 16 July | Pollution peaks at 12:00
AQI:
Fair
39.1/100
PM2.5 (fine particles):
Good
9.0/100
PM10 (coarse particles):
Good
2.9/100
NO2 (nitrogen dioxide):
Fair
24.4/100
O3 (ozone):
Fair
39.1/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.4/100
PM1 (ultrafine particles):
Good
11.5/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 15:00
AQI:
Fair
35.9/100
PM2.5 (fine particles):
Good
9.0/100
PM10 (coarse particles):
Good
6.4/100
NO2 (nitrogen dioxide):
Fair
26.1/100
O3 (ozone):
Fair
35.9/100
SO2 (sulfur dioxide):
Good
1.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.8/100
PM1 (ultrafine particles):
Good
10.1/100
Other Landmarks in Chur
Frequently Asked Questions
Is air quality bad in Masans right now?
On 16 July 2026, overall air quality in Masans is fair. AQI is the main air quality indicator at 39.1/100. Pollution peaks around 12:00 PM (O3: 39.1/100).
Will air quality be worse tomorrow in Masans?
On 17 July 2026, air quality conditions in Masans will be similar to today, with AQI forecast at fair at 35.9/100. Pollution peaks around 3:00 PM (O3: 35.9/100).
When is air pollution at its worst in Masans?
Masans' remote valley position means poor air quality is rare, with only a brief peak-season dip driven by winter tourism and seasonal traffic. The rest of the year, limited development and steady mountain airflow keep conditions reliably excellent.
Are air quality levels in Masans 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.
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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