Worst air pollution Monsanto, today and tomorrow
Today (16 July): Air quality in Monsanto is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 7:00 PM (O3: 37.2/100).
Tomorrow (17 July 2026): Air quality in Monsanto is fair. NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 6:00 PM (O3: 39.1/100). 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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Monsanto's setting on a granite hilltop in the Serra da Estrela foothills means minimal local traffic in the remote hill village drives most of the local variation in air quality across the year. The Castelo Branco terrain nearby can trap emissions under stable conditions, though stronger winds or rainfall usually bring noticeable improvement, and residents typically notice the clearest air during the more unsettled, windier stretches of the year.
Today - 16 July | Pollution peaks at 19:00
AQI:
Fair
37.2/100
PM2.5 (fine particles):
Good
17.2/100
PM10 (coarse particles):
Good
13.2/100
NO2 (nitrogen dioxide):
Good
19.8/100
O3 (ozone):
Fair
37.2/100
SO2 (sulfur dioxide):
Good
4.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.0/100
PM1 (ultrafine particles):
Good
11.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 18:00
AQI:
Fair
39.1/100
PM2.5 (fine particles):
Good
19.0/100
PM10 (coarse particles):
Good
12.1/100
NO2 (nitrogen dioxide):
Fair
27.2/100
O3 (ozone):
Fair
39.1/100
SO2 (sulfur dioxide):
Good
4.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.1/100
PM1 (ultrafine particles):
Good
12.6/100
Pollen forecast in Monsanto
View pollen forecastFrequently Asked Questions
Is air quality bad in Monsanto right now?
On 16 July 2026, overall air quality in Monsanto is fair. AQI is the main air quality indicator at 37.2/100. Pollution peaks around 7:00 PM (O3: 37.2/100).
Will air quality be worse tomorrow in Monsanto?
On 17 July 2026, air quality conditions in Monsanto will be similar to today, with AQI forecast at fair at 39.1/100. Pollution peaks around 6:00 PM (O3: 39.1/100).
When is air pollution at its worst in Monsanto?
The times to expect weaker air quality in Monsanto are during olive and oak pollen peaks and spells of minimal local traffic in the remote hill village; beyond those windows, conditions across Castelo Branco are typically steadier, particularly when wind or rain helps clear the air.
Are air quality levels in Monsanto 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