Air Quality in Donostia / San Sebastián, Spain

Overcast
17.4°C · 90.9% humidity
17.4°
Feels 17.4°
33
Good
Air quality is satisfactory. Enjoy outdoor activities.
7 stations

Nearby Monitoring Stations

AQI Forecast
54 5am
54
54
33 8am
39
43
46 11am
48
50
51 2pm
52
53
53 5pm
33
33
54 8pm
54
54
54 11pm
54
54
54 2am
54
54
AD 728×90

Air Quality Index Trend

49h · 3 stn

Donostia / San Sebastián's air quality is shaped by traffic emissions and residential heating. Pollution levels tend to peak during winter months when cold air traps emissions close to ground level.

90.9%
Humidity
14.3 km/h
Wind SW
1017.0 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
33
7.97 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Donostia / San Sebastián?

Temperature & Precipitation

PM2.5 Trend

49h · 3 stations
PM2.57.97 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (7 stations within 25 km)
7.97
Median
7.47
Average
4.1
Low
11.0
High
PM2.5 µg/m³ · Model: 10.0 · Bias: +2.0

What is the 7-day forecast for Donostia / San Sebastián?

07-22
21.9° 16.7°
0.38 mm
07-23
23.6° 18.8°
0.62 mm
07-24
22.2° 14.0°
1.44 mm
07-25
25.0° 15.4°
1.69 mm
07-26
23.5° 16.0°
0.5 mm
07-27
25.4° 14.7°
0.31 mm
07-28
27.3° 15.0°
0.38 mm
Both models agree Avg diff: 3.4°C

Where are air quality stations near Donostia / San Sebastián?

23
Hernani, País Vasco, Spain
5.0 km PM2.5: 5.5 µg/m³
25
Zubieta, San Sebastián, Donostia, País Vasco, Spain
6.4 km PM2.5: 6.0 µg/m³
21
Usurbil, País Vasco, Spain
7.5 km PM2.5: 5.0 µg/m³
–
ZUBIETA METEO
7.8 km 67.0% RH
29
Andoain, País Vasco, Spain
10.9 km PM2.5: 7.0 µg/m³
41
Pagoeta, Aia, País Vasco, Spain
16.1 km PM2.5: 9.8 µg/m³
36
Tolosa, País Vasco, Spain
21.9 km PM2.5: 8.6 µg/m³

What cities are near Donostia / San Sebastián?

31 Pasaia 32 Hernani 30 Errenteria 41 Lasarte 35 Oria 30 Irun 30 Hondarribia 33 Zarautz 32 Tolosa 26 Biarritz
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-22T06:04 UTC.