Worst air pollution Zamora, today and tomorrow
Today (20 September): Air quality in Zamora is fair. AQI, PM2.5, and NO2 are fair; PM10, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 8:00 AM (NO2: 30.0/100).
Tomorrow (21 September 2026): Air quality in Zamora is moderate. AQI worsens to moderate; NO2 increases to moderate; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 8:00 AM (NO2: 42.5/100). Airmine updates local air quality forecasts four times daily.
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Zamora's air quality in Spain benefits from the elevated Castilian Meseta position at 649 metres on the Duero river, with the flat Zamora plateau providing generally good wind dispersal on prevailing westerly and northwesterly winds. Vehicle traffic on the A-52 and the surrounding agricultural and wine industry contribute the primary local sources, while the open Castilian plain and Atlantic westerlies from Portugal generally prevent significant pollution accumulation in this historic Castilian cathedral city throughout the year.
Today - 20 September | Pollution peaks at 08:00
AQI:
Fair
30.0/100
PM2.5 (fine particles):
Fair
21.9/100
PM10 (coarse particles):
Good
11.8/100
NO2 (nitrogen dioxide):
Fair
30.0/100
O3 (ozone):
Good
20.0/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
3.1/100
PM1 (ultrafine particles):
Good
8.7/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 08:00
AQI:
Moderate
42.5/100
PM2.5 (fine particles):
Fair
25.4/100
PM10 (coarse particles):
Good
12.0/100
NO2 (nitrogen dioxide):
Moderate
42.5/100
O3 (ozone):
Fair
22.8/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
6.7/100
PM1 (ultrafine particles):
Good
13.3/100
Pollen forecast in Zamora
View pollen forecastFrequently Asked Questions
Is air quality bad in Zamora right now?
On 20 September 2026, overall air quality in Zamora is fair. AQI is the main air quality indicator at 30.0/100. Pollution peaks around 8:00 AM (NO2: 30.0/100).
Will air quality be worse tomorrow in Zamora?
On 21 September 2026, air quality conditions in Zamora will be worse than today, with AQI forecast at moderate at 42.5/100. Pollution peaks around 8:00 AM (NO2: 42.5/100).
When is air pollution at its worst in Zamora?
Does air quality in Zamora vary by season? The winter months typically bring the weakest air quality of the year, as calm anticyclonic conditions trap vehicle and heating pollution near the surface. Spring generally sees a gradual recovery, driven by more frequent rain showers and stronger breezes that prevent pollutants from settling. Summer brings its own challenge in the form of ground-level ozone, which forms readily under strong sunshine and high temperatures, particularly during heatwaves. Conditions tend to stabilise in autumn, as cooling weather and increasing rain reduce the ozone spikes typical of summer. The interior's dry continental climate means winter inversions and summer heat both tend to hit harder than along the coast.
Are air quality levels in Zamora 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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 20 September 2026 at 14:33 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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