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Belas (Lisbon) (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

弱阵雨
11°C
弱阵雨
Humidity
88.6%
Wind
11 m/s
Pressure
997.3 hPa
Direction
267°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
8° / 11°
Precip.
11.3mm
Max wind
12.1 m/s

Hourly Forecast

02.02
Now
Weather
11°
0.1
11
02.02
05:00
Weather
11°
11
02.02
06:00
Weather
10°
0.2
10
02.02
07:00
Weather
10°
11
02.02
08:00
Weather
10°
0.1
10
02.02
09:00
Weather
10°
0.2
10
02.02
10:00
Weather
11°
0.5
11
02.02
11:00
Weather
11°
0.6
11
02.02
12:00
Weather
11°
0.4
12
02.02
13:00
Weather
11°
2.1
11
02.02
14:00
Weather
10°
12
02.02
15:00
Weather
11°
0.8
11
02.02
16:00
Weather
10°
0.1
9
02.02
17:00
Weather
11°
0.9
10
02.02
18:00
Weather
1
9
02.02
19:00
Weather
0.1
9
02.02
20:00
Weather
0.1
9
02.02
21:00
Weather
0.3
9
02.02
22:00
Weather
0.6
8
02.02
23:00
Weather
1.2
7
03.02
00:00
Weather
0.5
8
03.02
01:00
Weather
1.3
9
03.02
02:00
Weather
0.2
8
03.02
03:00
Weather
7

Temperature

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

Precipitation

2.1mm
0mm
04:00
0.1mm
06:00
0.2mm
08:00
0.1mm
09:00
0.2mm
10:00
0.5mm
11:00
0.6mm
12:00
0.4mm
13:00
2.1mm
15:00
0.8mm
16:00
0.1mm
17:00
0.9mm
18:00
1mm
19:00
0.1mm
20:00
0.1mm
21:00
0.3mm
22:00
0.6mm
23:00
1.2mm
00:00
0.5mm
01:00
1.3mm
02:00
0.2mm
04:00 15:00 03:00

Wind

12.1m/s
0m/s
04:00
10.8 m/s
05:00
10.6 m/s
06:00
10.1 m/s
07:00
10.6 m/s
08:00
10.1 m/s
09:00
10.2 m/s
10:00
10.5 m/s
11:00
10.8 m/s
12:00
12.1 m/s
13:00
10.8 m/s
14:00
12.1 m/s
15:00
10.5 m/s
16:00
9.1 m/s
17:00
9.5 m/s
18:00
9.2 m/s
19:00
9.3 m/s
20:00
9.1 m/s
21:00
9.1 m/s
22:00
8.4 m/s
23:00
7.1 m/s
00:00
8.3 m/s
01:00
9.1 m/s
02:00
7.5 m/s
03:00
6.7 m/s
04:00 15:00 03:00

Radiation

0.051 uSv
11.6 km
6.4%

Measurement time: 2026-02-01 22:00

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
10.4 km
69
23%

Measurement time: 2026-02-02 03:00

Calculated from PM2.5/PM10

PM2.5
10.4 km
21 µg/m3
25%

Measurement time: 2026-02-02 03:00

source: Aqicn

O3
10.4 km
28.9 µg/m3
18.1%

Measurement time: 2026-02-02 03:00

source: Aqicn

PM10
10.4 km
10 µg/m3
7.1%

Measurement time: 2026-02-02 03:00

source: Aqicn

NO2
10.4 km
1.9 µg/m3
1%

Measurement time: 2026-02-02 03:00

source: Aqicn

SO2
10.4 km
0.2 µg/m3
0.1%

Measurement time: 2026-02-02 03:00

source: Aqicn

About Air Quality in Belas

Air quality in Belas 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 Belas

  • 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 Belas?

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 Belas

If you're planning outdoor activities in Belas, 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.