What is the air quality in Niterói today?

The current Air Quality Index (AQI) in Niterói is 25 (Good). PM2.5 concentration is 6.0 µg/m³.

What is the temperature in Niterói right now?

The current temperature in Niterói is 18.5°C (feels like 18.5°C). Humidity is 95.4% and wind speed is 34.0 km/h.

Is it safe to go outside in Niterói?

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

Air Quality in Niterói, Brazil

Rain

18.5°C · 95.4% humidity

18.5°

Feels 18.5°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Model forecast

Nearby Monitoring Stations

AQI Forecast

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View AQI history for Niterói →

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

95.4%

Humidity

34.0 km/h

Wind SE

1018.9 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

6.0 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Niterói?

Temperature & Precipitation

PM2.56.0 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

Both models agree Avg diff: 3.3°C

Where are air quality stations near Niterói?

–

brazil-região-norte-alameda-são-boaventura

0.6 km 29.4°C 72.0% RH PM2.5: 0.0 µg/m³ PM10: 0.0 µg/m³

What cities are near Niterói?

25 Rio de Janeiro 25 Catete 25 Santa Teresa 25 Estácio 25 Ipanema 25 Leblon 25 Vidigal 25 Rocinha 27 Duque de Caxias 25 Magé

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ModerateAQI > 50 Unhealthy for Sensitive GroupsAQI > 100 UnhealthyAQI > 150 Very UnhealthyAQI > 200

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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.