Worst air pollution Casco Histórico (Toledo) - Toledo, today and tomorrow
Today (20 September): Air quality in Casco Histórico (Toledo) is fair. AQI, PM2.5, NO2, O3, and PM1 are fair; PM10, SO2, CO, and HCHO are good. Pollution peaks around 1:00 PM (NO2: 37.3/100).
Tomorrow (21 September 2026): Air quality in Casco Histórico (Toledo) is fair. All pollutants stay as today. Pollution peaks around 6:00 PM (O3: 39.9/100). Airmine updates local air quality forecasts four times daily.
Get the full experience in the Airmine app.
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.
In Casco Histórico (Toledo), local traffic squeezed into narrow streets and seasonal heating smoke in winter play the biggest role locally. Air quality is generally moderate, dictated mostly by how much traffic reaches the old core. The narrow historic streets can trap vehicle fumes that would otherwise disperse quickly.
Today - 20 September | Pollution peaks at 13:00
AQI:
Fair
37.3/100
PM2.5 (fine particles):
Fair
33.6/100
PM10 (coarse particles):
Good
15.7/100
NO2 (nitrogen dioxide):
Fair
37.3/100
O3 (ozone):
Fair
32.1/100
SO2 (sulfur dioxide):
Good
1.3/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
2.6/100
PM1 (ultrafine particles):
Fair
34.5/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 18:00
AQI:
Fair
39.9/100
PM2.5 (fine particles):
Fair
21.9/100
PM10 (coarse particles):
Good
11.8/100
NO2 (nitrogen dioxide):
Fair
39.7/100
O3 (ozone):
Fair
39.9/100
SO2 (sulfur dioxide):
Good
2.1/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
3.8/100
PM1 (ultrafine particles):
Fair
24.1/100
Other Landmarks in Toledo
Frequently Asked Questions
Is air quality bad in Casco Histórico (Toledo) right now?
On 20 September 2026, overall air quality in Casco Histórico (Toledo) is fair. AQI is the main air quality indicator at 37.3/100. Pollution peaks around 1:00 PM (NO2: 37.3/100).
Will air quality be worse tomorrow in Casco Histórico (Toledo)?
On 21 September 2026, air quality conditions in Casco Histórico (Toledo) will be similar to today, with AQI forecast at fair at 39.9/100. Pollution peaks around 6:00 PM (O3: 39.9/100).
When is air pollution at its worst in Casco Histórico (Toledo)?
What is the yearly air quality pattern like in Casco Histórico (Toledo)? Winter tends to bring the year's weakest readings, as stagnant, cold air lets heating smoke and vehicle emissions build up rather than clear away. Spring is typically a transitional season, as milder, windier weather starts clearing out the pollutants that accumulate during winter's calm spells. Hot, dry summer conditions favour ozone formation, so afternoon readings can rise even when traffic and heating pollution are otherwise low. Autumn generally marks the shift back toward calmer, cleaner conditions as temperatures drop and rainfall becomes more regular. 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 Casco Histórico (Toledo) 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.
Want to see air quality forecasts for other cities in Spain?
Check air quality in other popular cities:
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.
Get the full experience in the Airmine app.