Is time to run? ⚠️☢️☣️

Santa Comba Dão (Viseu) (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

مطر
11°C
مطر
Humidity
94.7%
Wind
5 m/s
Pressure
994.2 hPa
Direction
231°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
11° / 13°
Precip.
51.8mm
Max wind
9.9 m/s

Hourly Forecast

04.02
Now
Weather
11°
0.4
04.02
09:00
Weather
11°
0.2
04.02
10:00
Weather
11°
04.02
11:00
Weather
12°
0.3
04.02
12:00
Weather
12°
0.8
04.02
13:00
Weather
12°
2.4
7
04.02
14:00
Weather
12°
3.3
6
04.02
15:00
Weather
12°
2.2
6
04.02
16:00
Weather
12°
2.6
6
04.02
17:00
Weather
12°
4.8
04.02
18:00
Weather
12°
3.6
6
04.02
19:00
Weather
12°
3.4
6
04.02
20:00
Weather
13°
1.2
7
04.02
21:00
Weather
13°
5.2
6
04.02
22:00
Weather
12°
1
6
04.02
23:00
Weather
13°
1.4
7
05.02
00:00
Weather
13°
1.4
7
05.02
01:00
Weather
13°
0.9
6
05.02
02:00
Weather
13°
1.8
7
05.02
03:00
Weather
13°
6.8
5
05.02
04:00
Weather
13°
4.8
8
05.02
05:00
Weather
13°
1.1
8
05.02
06:00
Weather
13°
1.1
10
05.02
07:00
Weather
13°
1.1
9

Temperature

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

Precipitation

6.8mm
0mm
08:00
0.4mm
09:00
0.2mm
11:00
0.3mm
12:00
0.8mm
13:00
2.4mm
14:00
3.3mm
15:00
2.2mm
16:00
2.6mm
17:00
4.8mm
18:00
3.6mm
19:00
3.4mm
20:00
1.2mm
21:00
5.2mm
22:00
1mm
23:00
1.4mm
00:00
1.4mm
01:00
0.9mm
02:00
1.8mm
03:00
6.8mm
04:00
4.8mm
05:00
1.1mm
06:00
1.1mm
07:00
1.1mm
08:00 19:00 07:00

Wind

9.9m/s
0m/s
08:00
4.9 m/s
09:00
4.9 m/s
10:00
4.2 m/s
11:00
4.8 m/s
12:00
4.6 m/s
13:00
6.7 m/s
14:00
5.5 m/s
15:00
5.8 m/s
16:00
5.9 m/s
17:00
4.8 m/s
18:00
5.7 m/s
19:00
5.6 m/s
20:00
6.5 m/s
21:00
5.9 m/s
22:00
6 m/s
23:00
6.6 m/s
00:00
6.7 m/s
01:00
6 m/s
02:00
6.5 m/s
03:00
5.1 m/s
04:00
7.5 m/s
05:00
7.8 m/s
06:00
9.9 m/s
07:00
9.1 m/s
08:00 19:00 07:00

Radiation

0.181 uSv
23.2 km
22.6%

Measurement time: 2026-02-03 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
54.6 km
14
4.7%

Measurement time: 2026-02-04 07:34

Calculated from PM2.5/PM10

O3
45.5 km
71.89 µg/m3
44.9%

Measurement time: 2026-02-04 09:19

source: OpenWeatherMap

PM2.5
54.6 km
3.58 µg/m3
4.3%

Measurement time: 2026-02-04 07:34

source: OpenWeatherMap

PM10
54.6 km
4.13 µg/m3
2.9%

Measurement time: 2026-02-04 07:34

source: OpenWeatherMap

CO
54.6 km
0.11797 mg/m3
0.8%

Measurement time: 2026-02-04 07:34

source: OpenWeatherMap

NO2
54.6 km
1.34 µg/m3
0.7%

Measurement time: 2026-02-04 07:34

source: OpenWeatherMap

SO2
45.5 km
0.33 µg/m3
0.1%

Measurement time: 2026-02-04 09:19

source: OpenWeatherMap

Info


Country: Portugal
Region: Viseu
Latitude: 40.39856
Longitude: -8.1316

About Air Quality in Santa Comba Dão

Air quality in Santa Comba Dão 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 Santa Comba Dão

  • 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 Santa Comba Dão?

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 Santa Comba Dão

If you're planning outdoor activities in Santa Comba Dão, 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.