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Riachos (Santarém) (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
15°C
Rain
Humidity
98.4%
Wind
5 m/s
Pressure
1012.9 hPa
Direction
205°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
10° / 17°
Precip.
28.4mm
Max wind
9.8 m/s

Hourly Forecast

01.02
Now
Weather
15°
0.5
01.02
13:00
Weather
16°
0.4
5
01.02
14:00
Weather
17°
3.6
5
01.02
15:00
Weather
16°
0.8
7
01.02
16:00
Weather
16°
0.2
6
01.02
17:00
Weather
15°
0.2
5
01.02
18:00
Weather
15°
0.3
01.02
19:00
Weather
15°
2.3
5
01.02
20:00
Weather
14°
1.3
6
01.02
21:00
Weather
14°
7
01.02
22:00
Weather
14°
0.2
6
01.02
23:00
Weather
14°
0.2
8
02.02
00:00
Weather
14°
0.3
8
02.02
01:00
Weather
13°
3.2
8
02.02
02:00
Weather
13°
6.1
8
02.02
03:00
Weather
13°
7
10
02.02
04:00
Weather
13°
0.8
9
02.02
05:00
Weather
12°
0.1
6
02.02
06:00
Weather
11°
6
02.02
07:00
Weather
10°
5
02.02
08:00
Weather
10°
5
02.02
09:00
Weather
10°
0.6
6
02.02
10:00
Weather
10°
7
02.02
11:00
Weather
10°
0.3
5

Temperature

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

Precipitation

7mm
0mm
12:00
0.5mm
13:00
0.4mm
14:00
3.6mm
15:00
0.8mm
16:00
0.2mm
17:00
0.2mm
18:00
0.3mm
19:00
2.3mm
20:00
1.3mm
22:00
0.2mm
23:00
0.2mm
00:00
0.3mm
01:00
3.2mm
02:00
6.1mm
03:00
7mm
04:00
0.8mm
05:00
0.1mm
09:00
0.6mm
11:00
0.3mm
12:00 23:00 11:00

Wind

9.8m/s
0m/s
12:00
4.6 m/s
13:00
5.3 m/s
14:00
5.3 m/s
15:00
6.6 m/s
16:00
6.2 m/s
17:00
5.2 m/s
18:00
5 m/s
19:00
5.4 m/s
20:00
6.3 m/s
21:00
6.5 m/s
22:00
6.3 m/s
23:00
7.8 m/s
00:00
8.1 m/s
01:00
7.6 m/s
02:00
8.1 m/s
03:00
9.8 m/s
04:00
8.6 m/s
05:00
6.3 m/s
06:00
6.2 m/s
07:00
5.1 m/s
08:00
5.1 m/s
09:00
5.5 m/s
10:00
6.7 m/s
11:00
5.3 m/s
12:00 23:00 11:00

Radiation

0.026 uSv
26.6 km
3.3%

Measurement time: 2026-01-31 16:00

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
94.8 km
97
32.3%

Measurement time: 2026-02-01 12:00

Calculated from PM2.5/PM10

PM2.5
94.8 km
34 µg/m3
40.5%

Measurement time: 2026-02-01 12:00

source: Aqicn

PM10
94.8 km
25 µg/m3
17.9%

Measurement time: 2026-02-01 12:00

source: Aqicn

O3
91.3 km
21.6 µg/m3
13.5%

Measurement time: 2026-02-01 12:00

source: Aqicn

NO2
94.8 km
9.2 µg/m3
4.6%

Measurement time: 2026-02-01 12:00

source: Aqicn

SO2
91.3 km
1.1 µg/m3
0.3%

Measurement time: 2026-02-01 12:00

source: Aqicn

Info


Country: Portugal
Region: Santarém
Latitude: 39.44472
Longitude: -8.5142


Solar Energy

Low
246.5 W/m²
Solar Radiation
Solar Calculator
Calculate energy production for Riachos

About Air Quality in Riachos

Air quality in Riachos 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 Riachos

  • 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 Riachos?

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 Riachos

If you're planning outdoor activities in Riachos, 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.