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Porto Franco (Maranhão) (BR)

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

Pluie
26°C
Pluie
Humidity
86.5%
Wind
2 m/s
Pressure
1008.5 hPa
Direction
120°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
23° / 32°
Precip.
1.2mm
Max wind
4.4 m/s

Hourly Forecast

01.02
Now
Weather
26°
0.3
01.02
23:00
Weather
25°
0.2
02.02
00:00
Weather
24°
02.02
01:00
Weather
25°
02.02
02:00
Weather
25°
02.02
03:00
Weather
25°
02.02
04:00
Weather
25°
02.02
05:00
Weather
24°
02.02
06:00
Weather
24°
02.02
07:00
Weather
24°
02.02
08:00
Weather
23°
02.02
09:00
Weather
23°
02.02
10:00
Weather
24°
02.02
11:00
Weather
26°
02.02
12:00
Weather
27°
02.02
13:00
Weather
28°
02.02
14:00
Weather
30°
02.02
15:00
Weather
30°
02.02
16:00
Weather
31°
02.02
17:00
Weather
32°
02.02
18:00
Weather
32°
0.4
02.02
19:00
Weather
30°
0.2
02.02
20:00
Weather
30°
0.1
02.02
21:00
Weather
28°

Temperature

32°C
23°C
22:00
26°C
23:00
25°C
00:00
24°C
01:00
25°C
02:00
25°C
03:00
25°C
04:00
25°C
05:00
24°C
06:00
24°C
07:00
24°C
08:00
23°C
09:00
23°C
10:00
24°C
11:00
26°C
12:00
27°C
13:00
28°C
14:00
30°C
15:00
30°C
16:00
31°C
17:00
32°C
18:00
32°C
19:00
30°C
20:00
30°C
21:00
28°C
22:00 09:00 21:00

Precipitation

0.4mm
0mm
22:00
0.3mm
23:00
0.2mm
18:00
0.4mm
19:00
0.2mm
20:00
0.1mm
22:00 09:00 21:00

Wind

4.4m/s
0m/s
22:00
2 m/s
23:00
4.4 m/s
00:00
2.1 m/s
01:00
1.4 m/s
02:00
1.8 m/s
03:00
0.8 m/s
04:00
0.4 m/s
05:00
0.4 m/s
06:00
0.7 m/s
07:00
0.9 m/s
08:00
0.9 m/s
09:00
1.1 m/s
10:00
1.3 m/s
11:00
1.4 m/s
12:00
3.1 m/s
13:00
3.4 m/s
14:00
2.9 m/s
15:00
2.7 m/s
16:00
2.2 m/s
17:00
2.6 m/s
18:00
3.2 m/s
19:00
3.1 m/s
20:00
2.5 m/s
21:00
3.2 m/s
22:00 09:00 21:00

Radiation

No sensor within 100 km.

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
4.3 km
2
0.7%

Measurement time: 2026-02-01 21:50

Calculated from PM2.5/PM10

O3
4.3 km
31.07 µg/m3
19.4%

Measurement time: 2026-02-01 21:50

source: OpenWeatherMap

CO
4.3 km
0.14572 mg/m3
1%

Measurement time: 2026-02-01 21:50

source: OpenWeatherMap

PM2.5
4.3 km
0.56 µg/m3
0.7%

Measurement time: 2026-02-01 21:50

source: OpenWeatherMap

PM10
4.3 km
0.62 µg/m3
0.4%

Measurement time: 2026-02-01 21:50

source: OpenWeatherMap

NO2
4.3 km
0.4 µg/m3
0.2%

Measurement time: 2026-02-01 21:50

source: OpenWeatherMap

SO2
4.3 km
0.07 µg/m3
0%

Measurement time: 2026-02-01 21:50

source: OpenWeatherMap

Info


Country: Brazil
Region: Maranhão
Latitude: -6.33833
Longitude: -47.39917


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About Air Quality in Porto Franco

Air quality in Porto Franco 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 Porto Franco

  • 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 Porto Franco?

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 Porto Franco

If you're planning outdoor activities in Porto Franco, 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.