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Leça do Bailio (Porto) (PT)

Air Quality Trend (last 7 days)

Good (0-50)
Moderate (51-100)
Unhealthy for Sensitive Groups (101-150)
Unhealthy (151-200)
Very Unhealthy (201-300)
Hazardous (300+)

Weather - 48h MET Norway

Pluie
13°C
Pluie
Humidity
89.5%
Wind
9 m/s
Pressure
990.2 hPa
Direction
276°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
12° / 14°
Precip.
10.4mm
Max wind
10.8 m/s

Hourly Forecast

04.02
Now
Weather
13°
0.3
9
04.02
03:00
Weather
13°
0.3
9
04.02
04:00
Weather
13°
0.7
9
04.02
05:00
Weather
13°
0.6
8
04.02
06:00
Weather
13°
0.3
8
04.02
07:00
Weather
13°
0.4
8
04.02
08:00
Weather
13°
8
04.02
09:00
Weather
13°
9
04.02
10:00
Weather
14°
0.2
8
04.02
11:00
Weather
14°
0.5
8
04.02
12:00
Weather
14°
0.3
8
04.02
13:00
Weather
14°
0.4
9
04.02
14:00
Weather
13°
0.6
9
04.02
15:00
Weather
14°
0.7
8
04.02
16:00
Weather
13°
0.2
7
04.02
17:00
Weather
13°
0.2
6
04.02
18:00
Weather
13°
0.1
7
04.02
19:00
Weather
13°
1.3
6
04.02
20:00
Weather
12°
1.1
7
04.02
21:00
Weather
13°
0.6
8
04.02
22:00
Weather
14°
0.5
8
04.02
23:00
Weather
13°
0.3
9
05.02
00:00
Weather
13°
0.2
9
05.02
01:00
Weather
13°
0.6
11

Temperature

14°C
12°C
02:00
13°C
03:00
13°C
04:00
13°C
05:00
13°C
06:00
13°C
07:00
13°C
08:00
13°C
09:00
13°C
10:00
14°C
11:00
14°C
12:00
14°C
13:00
14°C
14:00
13°C
15:00
14°C
16:00
13°C
17:00
13°C
18:00
13°C
19:00
13°C
20:00
12°C
21:00
13°C
22:00
14°C
23:00
13°C
00:00
13°C
01:00
13°C
02:00 13:00 01:00

Precipitation

1.3mm
0mm
02:00
0.3mm
03:00
0.3mm
04:00
0.7mm
05:00
0.6mm
06:00
0.3mm
07:00
0.4mm
10:00
0.2mm
11:00
0.5mm
12:00
0.3mm
13:00
0.4mm
14:00
0.6mm
15:00
0.7mm
16:00
0.2mm
17:00
0.2mm
18:00
0.1mm
19:00
1.3mm
20:00
1.1mm
21:00
0.6mm
22:00
0.5mm
23:00
0.3mm
00:00
0.2mm
01:00
0.6mm
02:00 13:00 01:00

Wind

10.8m/s
0m/s
02:00
9.2 m/s
03:00
9.2 m/s
04:00
8.5 m/s
05:00
8.1 m/s
06:00
7.5 m/s
07:00
7.6 m/s
08:00
8.2 m/s
09:00
9 m/s
10:00
8.3 m/s
11:00
8 m/s
12:00
7.6 m/s
13:00
9 m/s
14:00
9.2 m/s
15:00
8.3 m/s
16:00
7.3 m/s
17:00
6.2 m/s
18:00
7 m/s
19:00
6.3 m/s
20:00
7.4 m/s
21:00
8 m/s
22:00
8.4 m/s
23:00
9.4 m/s
00:00
9.3 m/s
01:00
10.8 m/s
02:00 13:00 01:00

Radiation

0.098 uSv
8.5 km
12.2%

Measurement time: 2026-02-03 20:00

source: remap_europe

We display the worst measurements from all stations in the area. This approach provides a more cautious assessment of air quality, accounting for local pollution sources.

AQI
22.7 km
88
29.3%

Measurement time: 2026-02-04 01:00

Calculated from PM2.5/PM10

O3
78.7 km
70.34 µg/m3
44%

Measurement time: 2026-02-04 02:42

source: OpenWeatherMap

PM2.5
22.7 km
30 µg/m3
35.7%

Measurement time: 2026-02-04 01:00

source: Aqicn

PM10
22.7 km
9 µg/m3
6.4%

Measurement time: 2026-02-04 01:00

source: Aqicn

CO
78.7 km
0.11635 mg/m3
0.8%

Measurement time: 2026-02-04 02:42

source: OpenWeatherMap

NO2
78.7 km
1.06 µg/m3
0.5%

Measurement time: 2026-02-04 02:42

source: OpenWeatherMap

SO2
78.7 km
0.37 µg/m3
0.1%

Measurement time: 2026-02-04 02:42

source: OpenWeatherMap

About Air Quality in Leça do Bailio

Air quality in Leça do Bailio is monitored in real-time by sensors and measurement stations. On this page you'll find current data on major air pollutants including particulate matter PM2.5 and PM10, nitrogen dioxide (NO2), ozone (O3), and radiation levels.

Common Pollutants in Leça do Bailio

  • PM2.5 - fine particulate matter up to 2.5 micrometers, particularly harmful to health
  • PM10 - particulate matter up to 10 micrometers from traffic and industry
  • NO2 - nitrogen dioxide mainly emitted by vehicles
  • O3 - tropospheric ozone formed in photochemical reactions

When is Air Quality Best in Leça do Bailio?

Generally, the best air quality occurs:

  • Early morning (5:00-7:00 AM) before rush hour traffic
  • After rainfall which cleanses the atmosphere
  • During strong winds that disperse pollutants
  • In summer months when heating systems are less used

Tips for Runners in Leça do Bailio

If you're planning outdoor activities in Leça do Bailio, always check the current AQI value. When AQI exceeds 100, consider moving your workout indoors or shortening the distance. People with respiratory issues, children, and seniors should be especially cautious during elevated pollution levels. Choose routes away from busy streets and industrial areas.