What is the air quality in Castanhal today?

The current Air Quality Index (AQI) in Castanhal is 27 (Good). PM2.5 concentration is 6.5 µg/m³.

What is the temperature in Castanhal right now?

The current temperature in Castanhal is 25.7°C (feels like 25.7°C). Humidity is 77.3% and wind speed is 33.7 km/h.

Is it safe to go outside in Castanhal?

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

Air Quality in Castanhal, Brazil

Cloudy

25.7°C · 77.3% humidity

25.7°

Feels 25.7°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Model forecast

Nearby Monitoring Stations

AQI Forecast

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View AQI history for Castanhal →

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

77.3%

Humidity

33.7 km/h

Wind NE

1009.2 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

6.5 µg/m³

PM10

27.4 µg/m³

050100150200300500

What is the weather forecast for Castanhal?

Temperature & Precipitation

PM2.56.5 µg/m³ ✓ WHO

Good

PM1027.4 µg/m³

Good

UV INDEX0.0

Low

What is the 7-day forecast for Castanhal?

10-21

37.4° 21.2°

10-22

38.5° 22.3°

0.06 mm

10-23

35.8° 22.7°

0.06 mm

10-24

38.7° 21.1°

10-25

38.5° 22.8°

10-26

33.9° 25.1°

0.06 mm

10-27

33.4° 22.1°

0.19 mm

Both models agree Avg diff: 1.5°C

What cities are near Castanhal?

34 Santa Isabel do Pará 34 Santo Antônio do Tauá 27 Bujaru 27 Benevides 27 Igarapé-Açu 27 Santa Maria do Pará 34 Santa Bárbara do Pará 27 São Domingos do Capim 54 Marituba 54 Ananindeua

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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-10-21T23:31 UTC.