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Maia (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
14°C
Rain
Humidity
91.1%
Wind
9 m/s
Pressure
993.5 hPa
Direction
238°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
12° / 14°
Precip.
37.2mm
Max wind
14.7 m/s

Hourly Forecast

04.02
Now
Weather
14°
0.8
9
04.02
16:00
Weather
13°
0.6
9
04.02
17:00
Weather
13°
0.7
7
04.02
18:00
Weather
13°
7
04.02
19:00
Weather
13°
0.1
7
04.02
20:00
Weather
13°
0.2
8
04.02
21:00
Weather
13°
0.4
7
04.02
22:00
Weather
13°
0.5
8
04.02
23:00
Weather
13°
1.5
9
05.02
00:00
Weather
13°
0.3
9
05.02
01:00
Weather
14°
2
10
05.02
02:00
Weather
13°
3.3
11
05.02
03:00
Weather
14°
1.2
13
05.02
04:00
Weather
14°
2.5
13
05.02
05:00
Weather
14°
0.7
13
05.02
06:00
Weather
14°
3.2
13
05.02
07:00
Weather
12°
1.4
14
05.02
08:00
Weather
12°
1.6
11
05.02
09:00
Weather
12°
1.7
14
05.02
10:00
Weather
13°
3.1
14
05.02
11:00
Weather
13°
3.2
14
05.02
12:00
Weather
13°
2
15
05.02
13:00
Weather
13°
3.4
14
05.02
14:00
Weather
13°
2.8
13

Temperature

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

Precipitation

3.4mm
0mm
15:00
0.8mm
16:00
0.6mm
17:00
0.7mm
19:00
0.1mm
20:00
0.2mm
21:00
0.4mm
22:00
0.5mm
23:00
1.5mm
00:00
0.3mm
01:00
2mm
02:00
3.3mm
03:00
1.2mm
04:00
2.5mm
05:00
0.7mm
06:00
3.2mm
07:00
1.4mm
08:00
1.6mm
09:00
1.7mm
10:00
3.1mm
11:00
3.2mm
12:00
2mm
13:00
3.4mm
14:00
2.8mm
15:00 02:00 14:00

Wind

14.7m/s
0m/s
15:00
9.3 m/s
16:00
8.5 m/s
17:00
7.1 m/s
18:00
7.4 m/s
19:00
7.1 m/s
20:00
8 m/s
21:00
7.3 m/s
22:00
7.7 m/s
23:00
8.6 m/s
00:00
8.7 m/s
01:00
9.9 m/s
02:00
10.8 m/s
03:00
12.9 m/s
04:00
12.7 m/s
05:00
13.2 m/s
06:00
13 m/s
07:00
13.7 m/s
08:00
10.6 m/s
09:00
13.6 m/s
10:00
13.5 m/s
11:00
14 m/s
12:00
14.7 m/s
13:00
13.7 m/s
14:00
12.7 m/s
15:00 02:00 14:00

Radiation

0.097 uSv
10.8 km
12.2%

Measurement time: 2026-02-04 10:00

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
20.8 km
61
20.3%

Measurement time: 2026-02-04 14:00

Calculated from PM2.5/PM10

O3
82.4 km
71.88 µg/m3
44.9%

Measurement time: 2026-02-04 14:07

source: OpenWeatherMap

PM2.5
20.8 km
17 µg/m3
20.2%

Measurement time: 2026-02-04 14:00

source: Aqicn

PM10
20.8 km
21 µg/m3
15%

Measurement time: 2026-02-04 14:00

source: Aqicn

CO
82.4 km
0.11764 mg/m3
0.8%

Measurement time: 2026-02-04 14:07

source: OpenWeatherMap

NO2
20.8 km
1.4 µg/m3
0.7%

Measurement time: 2026-02-04 14:00

source: Aqicn

SO2
82.4 km
0.46 µg/m3
0.1%

Measurement time: 2026-02-04 14:07

source: OpenWeatherMap

About Air Quality in Maia

Air quality in Maia 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 Maia

  • 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 Maia?

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 Maia

If you're planning outdoor activities in Maia, 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.