Worst air pollution Catedral de León - León, today and tomorrow
Today (16 July): Air quality in Catedral de León 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: 36.3/100).
Tomorrow (17 July 2026): Air quality in Catedral de León is fair. All pollutants stay as today. Pollution peaks around 7:00 PM (O3: 38.8/100). 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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In Catedral de León, stubble burning in late summer and local traffic are the main local influences on air quality. Levels are generally low but can spike sharply in August and September. Strong summer wind usually keeps the air moving despite the dust from farmland.
Today - 16 July | Pollution peaks at 19:00
AQI:
Fair
36.3/100
PM2.5 (fine particles):
Good
15.4/100
PM10 (coarse particles):
Good
12.3/100
NO2 (nitrogen dioxide):
Good
10.7/100
O3 (ozone):
Fair
36.3/100
SO2 (sulfur dioxide):
Good
2.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.6/100
PM1 (ultrafine particles):
Good
6.8/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 19:00
AQI:
Fair
38.8/100
PM2.5 (fine particles):
Good
12.7/100
PM10 (coarse particles):
Good
10.3/100
NO2 (nitrogen dioxide):
Good
17.1/100
O3 (ozone):
Fair
38.8/100
SO2 (sulfur dioxide):
Good
2.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.0/100
PM1 (ultrafine particles):
Good
7.5/100
Other Landmarks in León
Frequently Asked Questions
Is air quality bad in Catedral de León right now?
On 16 July 2026, overall air quality in Catedral de León is fair. AQI is the main air quality indicator at 36.3/100. Pollution peaks around 7:00 PM (O3: 36.3/100).
Will air quality be worse tomorrow in Catedral de León?
On 17 July 2026, air quality conditions in Catedral de León will be similar to today, with AQI forecast at fair at 38.8/100. Pollution peaks around 7:00 PM (O3: 38.8/100).
When is air pollution at its worst in Catedral de León?
What time of year has the cleanest air in Catedral de León? December through February is often the toughest stretch, driven by temperature inversions that keep exhaust and heating smoke from dispersing on still days. Spring is typically a transitional season, as milder, windier weather starts clearing out the pollutants that accumulate during winter's calm spells. Summer can bring periodic wildfire smoke on top of the usual ozone build-up from intense heat and sunshine. Autumn usually sees a steady return to cleaner conditions as the ozone-favouring heat of summer fades and rainfall picks up. The plateau's continental climate, with cold winters and hot, dry summers, tends to produce more pronounced seasonal differences here.
Are air quality levels in Catedral de León 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 Spain?
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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