Highest air pollution Caldas da Rainha, today and tomorrow
Today (29 June): Air quality in Caldas da Rainha is fair. NO2 is fair; AQI and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 3:00 PM (O3: 41.2/100).
Tomorrow (30 June 2026): Air quality in Caldas da Rainha is medium. NO2 decreases to good; all other pollutants stay as today. Pollution peaks around 2:00 PM (O3: 52.2/100). 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
Caldas da Rainha's air quality benefits from the Estremadura Atlantic coastal proximity in central Portugal, with consistent Atlantic westerlies providing reliable maritime ventilation. Vehicle traffic on the A8 motorway and surrounding ceramic, agriculture, and thermal spa operations contribute the primary local sources, while the Atlantic coastal proximity and the surrounding Torres Vedras-Óbidos hills generally maintain Caldas da Rainha among Portugal's more moderate central corridor urban environments throughout the year.
Today - 29 June | Pollution peaks at 15:00
AQI:
Medium
41.2/100
PM2.5 (fine particles):
Good
12.9/100
PM10 (coarse particles):
Good
5.6/100
NO2 (nitrogen dioxide):
Fair
24.9/100
O3 (ozone):
Medium
41.2/100
SO2 (sulfur dioxide):
Good
4.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.6/100
PM1 (ultrafine particles):
Good
8.9/100
Levels show the poorest local air quality during the day
Tomorrow - 30 June | Pollution peaks at 14:00
AQI:
Medium
52.2/100
PM2.5 (fine particles):
Good
16.1/100
PM10 (coarse particles):
Good
6.6/100
NO2 (nitrogen dioxide):
Good
19.6/100
O3 (ozone):
Medium
52.2/100
SO2 (sulfur dioxide):
Good
6.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.3/100
PM1 (ultrafine particles):
Good
11.3/100
Pollen forecast in Caldas da Rainha
View pollen forecastFrequently Asked Questions
Is air quality bad in Caldas da Rainha right now?
On 29 June 2026, overall air quality in Caldas da Rainha is fair. NO2 is the main pollutant at 24.9/100. Pollution peaks around 3:00 PM (O3: 41.2/100).
Will air quality be worse tomorrow in Caldas da Rainha?
On 30 June 2026, air quality conditions in Caldas da Rainha will be better than today, with AQI forecast at medium at 52.2/100. Pollution peaks around 2:00 PM (O3: 52.2/100).
Are air quality levels in Caldas da Rainha 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 Portugal?
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Data provided by Airmine — Last update: 29 June 2026 at 18:39 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