What is the air quality in São Sebastião today?

The current Air Quality Index (AQI) in São Sebastião is 20 (Good). PM2.5 concentration is 4.9 µg/m³.

What is the temperature in São Sebastião right now?

The current temperature in São Sebastião is 17.0°C (feels like 17.0°C). Humidity is 96.1% and wind speed is 26.4 km/h.

Is it safe to go outside in São Sebastião?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in São Sebastião, Brazil

Rain

17.0°C · 96.1% humidity

17.0°

Feels 17.0°

Good

Air quality is satisfactory. Enjoy outdoor activities.

2 stations

Nearby Monitoring Stations

AQI Forecast

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Air Quality Index Trend

35h · 1 stn

View full history →

São Sebastião's air quality is influenced by vehicle emissions, industrial activity, and seasonal agricultural burning. Pollution patterns vary with dry and wet seasons.

96.1%

Humidity

26.4 km/h

Wind E

1019.8 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

4.9 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for São Sebastião?

Temperature & Precipitation

PM2.5 Trend

35h · 1 station

PM2.54.9 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

Station readings (2 stations within 25 km)

4.9

Median

4.9

Average

4.8

Low

5.0

High

PM2.5 µg/m³ · Model: 6.0 · Bias: +1.1

What is the 7-day forecast for São Sebastião?

10-21

23.2° 16.9°

3.38 mm

10-22

20.8° 16.0°

20.62 mm

10-23

22.1° 15.4°

6.0 mm

10-24

24.1° 15.3°

9.75 mm

10-25

18.8° 15.3°

10.69 mm

10-26

19.3° 16.1°

12.44 mm

10-27

22.8° 19.0°

16.19 mm

Both models agree Avg diff: 3.6°C

Where are air quality stations near São Sebastião?

São Sebastião, São Paulo, Brazil

5.1 km PM2.5: 4.8 µg/m³

São Sebastião, São Paulo, Brazil

5.1 km PM2.5: 5.0 µg/m³

São Sebastião, São Paulo, Brazil

5.1 km PM2.5: 5.3 µg/m³

São Sebastião, São Paulo, Brazil

5.1 km PM2.5: 4.8 µg/m³

São Sebastião, São Paulo, Brazil

5.1 km PM2.5: 5.3 µg/m³

What cities are near São Sebastião?

20 Ilhabela 20 Caraguatatuba 20 Paraibuna 28 Ubatuba 18 Salesópolis 20 Biritiba Mirim 21 Guararema 20 Bertioga 21 Jacareí 28 Caçapava

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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-10-21T23:33 UTC.