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Castelões de Cepeda (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

Light rain showers
7°C
Light rain showers
Humidity
95.4%
Wind
5 m/s
Pressure
1000.1 hPa
Direction
208°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
6° / 11°
Precip.
22.8mm
Max wind
7.2 m/s

Hourly Forecast

03.02
Now
Weather
0.1
5
03.02
11:00
Weather
0.7
03.02
12:00
Weather
0.3
03.02
13:00
Weather
1.7
03.02
14:00
Weather
0.1
03.02
15:00
Weather
0.7
03.02
16:00
Weather
0.2
03.02
17:00
Weather
0.8
03.02
18:00
Weather
0.9
03.02
19:00
Weather
1.6
03.02
20:00
Weather
1.8
6
03.02
21:00
Weather
0.9
5
03.02
22:00
Weather
3.1
6
03.02
23:00
Weather
0.1
6
04.02
00:00
Weather
4.7
6
04.02
01:00
Weather
1.3
7
04.02
02:00
Weather
11°
0.5
7
04.02
03:00
Weather
11°
0.4
7
04.02
04:00
Weather
11°
0.8
6
04.02
05:00
Weather
11°
0.5
5
04.02
06:00
Weather
11°
0.4
04.02
07:00
Weather
11°
0.3
04.02
08:00
Weather
11°
0.5
04.02
09:00
Weather
11°
0.4

Temperature

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

Precipitation

4.7mm
0mm
10:00
0.1mm
11:00
0.7mm
12:00
0.3mm
13:00
1.7mm
14:00
0.1mm
15:00
0.7mm
16:00
0.2mm
17:00
0.8mm
18:00
0.9mm
19:00
1.6mm
20:00
1.8mm
21:00
0.9mm
22:00
3.1mm
23:00
0.1mm
00:00
4.7mm
01:00
1.3mm
02:00
0.5mm
03:00
0.4mm
04:00
0.8mm
05:00
0.5mm
06:00
0.4mm
07:00
0.3mm
08:00
0.5mm
09:00
0.4mm
10:00 21:00 09:00

Wind

7.2m/s
0m/s
10:00
5.4 m/s
11:00
4.6 m/s
12:00
4.9 m/s
13:00
4 m/s
14:00
3.8 m/s
15:00
4.5 m/s
16:00
3.7 m/s
17:00
4.1 m/s
18:00
3.9 m/s
19:00
4.2 m/s
20:00
5.6 m/s
21:00
5.2 m/s
22:00
5.6 m/s
23:00
5.5 m/s
00:00
5.7 m/s
01:00
6.8 m/s
02:00
7.2 m/s
03:00
6.9 m/s
04:00
5.5 m/s
05:00
5.1 m/s
06:00
4.3 m/s
07:00
4.4 m/s
08:00
5 m/s
09:00
4.8 m/s
10:00 21:00 09:00

Radiation

0.101 uSv
23.2 km
12.7%

Measurement time: 2026-02-03 05:00

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
8.7 km
52
17.3%

Measurement time: 2026-02-03 09:00

Calculated from PM2.5/PM10

PM2.5
8.7 km
13 µg/m3
15.5%

Measurement time: 2026-02-03 09:00

source: Aqicn

O3
8.7 km
18.3 µg/m3
11.4%

Measurement time: 2026-02-03 09:00

source: Aqicn

PM10
8.7 km
12 µg/m3
8.6%

Measurement time: 2026-02-03 09:00

source: Aqicn

NO2
8.7 km
2.3 µg/m3
1.2%

Measurement time: 2026-02-03 09:00

source: Aqicn

Info


Country: Portugal
Region: Porto
Latitude: 41.20265
Longitude: -8.33516

About Air Quality in Castelões de Cepeda

Air quality in Castelões de Cepeda 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 Castelões de Cepeda

  • 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 Castelões de Cepeda?

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 Castelões de Cepeda

If you're planning outdoor activities in Castelões de Cepeda, 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.