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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

Rain
5°C
Rain
Humidity
94%
Wind
5 m/s
Pressure
997.8 hPa
Direction
148°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
5° / 13°
Precip.
17.2mm
Max wind
11.1 m/s

Hourly Forecast

03.02
Now
Weather
0.6
5
03.02
06:00
Weather
0.8
6
03.02
07:00
Weather
0.3
8
03.02
08:00
Weather
1.9
03.02
09:00
Weather
1.3
5
03.02
10:00
Weather
0.5
03.02
11:00
Weather
0.3
6
03.02
12:00
Weather
10°
6
03.02
13:00
Weather
11°
0.4
03.02
14:00
Weather
11°
1.3
03.02
15:00
Weather
11°
03.02
16:00
Weather
11°
0.3
6
03.02
17:00
Weather
10°
0.5
6
03.02
18:00
Weather
0.9
7
03.02
19:00
Weather
1.5
8
03.02
20:00
Weather
1.5
8
03.02
21:00
Weather
1.1
9
03.02
22:00
Weather
0.3
9
03.02
23:00
Weather
0.2
10
04.02
00:00
Weather
10°
0.4
11
04.02
01:00
Weather
12°
0.6
9
04.02
02:00
Weather
13°
1
10
04.02
03:00
Weather
13°
0.3
9
04.02
04:00
Weather
13°
1.2
8

Temperature

13°C
5°C
05:00
5°C
06:00
6°C
07:00
7°C
08:00
8°C
09:00
8°C
10:00
8°C
11:00
9°C
12:00
10°C
13:00
11°C
14:00
11°C
15:00
11°C
16:00
11°C
17:00
10°C
18:00
9°C
19:00
9°C
20:00
8°C
21:00
9°C
22:00
9°C
23:00
9°C
00:00
10°C
01:00
12°C
02:00
13°C
03:00
13°C
04:00
13°C
05:00 16:00 04:00

Precipitation

1.9mm
0mm
05:00
0.6mm
06:00
0.8mm
07:00
0.3mm
08:00
1.9mm
09:00
1.3mm
10:00
0.5mm
11:00
0.3mm
13:00
0.4mm
14:00
1.3mm
16:00
0.3mm
17:00
0.5mm
18:00
0.9mm
19:00
1.5mm
20:00
1.5mm
21:00
1.1mm
22:00
0.3mm
23:00
0.2mm
00:00
0.4mm
01:00
0.6mm
02:00
1mm
03:00
0.3mm
04:00
1.2mm
05:00 16:00 04:00

Wind

11.1m/s
0m/s
05:00
5.1 m/s
06:00
5.8 m/s
07:00
8 m/s
08:00
4.2 m/s
09:00
5.3 m/s
10:00
3.3 m/s
11:00
5.5 m/s
12:00
5.8 m/s
13:00
3.9 m/s
14:00
4.4 m/s
15:00
4.9 m/s
16:00
5.9 m/s
17:00
5.8 m/s
18:00
6.7 m/s
19:00
8 m/s
20:00
8.4 m/s
21:00
9.4 m/s
22:00
8.7 m/s
23:00
9.5 m/s
00:00
11.1 m/s
01:00
9.2 m/s
02:00
9.6 m/s
03:00
8.9 m/s
04:00
8.2 m/s
05:00 16:00 04:00

Radiation

0.099 uSv
8.5 km
12.4%

Measurement time: 2026-02-02 23:00

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
11.2 km
3
1%

Measurement time: 2026-02-03 06:06

Calculated from PM2.5/PM10

O3
11.2 km
78.78 µg/m3
49.2%

Measurement time: 2026-02-03 06:06

source: OpenWeatherMap

PM10
11.2 km
2.64 µg/m3
1.9%

Measurement time: 2026-02-03 06:06

source: OpenWeatherMap

CO
11.2 km
0.15209 mg/m3
1.1%

Measurement time: 2026-02-03 06:06

source: OpenWeatherMap

PM2.5
11.2 km
0.85 µg/m3
1%

Measurement time: 2026-02-03 06:06

source: OpenWeatherMap

NO2
11.2 km
0.43 µg/m3
0.2%

Measurement time: 2026-02-03 06:06

source: OpenWeatherMap

SO2
11.2 km
0.21 µg/m3
0.1%

Measurement time: 2026-02-03 06:06

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.