Air Quality in Niterói, Brazil
Drizzle
17.4°C · 90.0% humidity
17.4°
Feels 17.4°
60
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Model forecast
Nearby Monitoring Stations
Niterói's air quality — share it
AQI Forecast
54
8am
54
54
60
11am
58
57
56
2pm
56
55
55
5pm
67
66
66
8pm
66
54
54
11pm
54
54
54
2am
54
54
54
5am
54
54
Niterói's air quality is influenced by vehicle emissions, industrial activity, and seasonal agricultural burning. Pollution patterns vary with dry and wet seasons. Current PM2.5 concentration in Niterói is 1.1× the WHO 24-hour guideline of 15 µg/m³.
90.0%
Humidity
30.9 km/h
Wind NW
1026.4 hPa
Pressure
10.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
16.35 µg/m³
PM10
66.15 µg/m³
050100150200300500
What is the weather forecast for Niterói?
Temperature & Precipitation
PM2.516.35 µg/m³
×1.1 WHO
Moderate
PM1066.15 µg/m³
Moderate
UV INDEX10.9
Extreme
What is the 7-day forecast for Niterói?
05-30
23.5° 17.4°
5.25 mm
05-31
23.3° 19.0°
13.13 mm
06-01
23.6° 18.5°
1.63 mm
06-02
21.8° 19.3°
1.87 mm
06-03
25.3° 20.7°
0.38 mm
06-04
25.4° 14.8°
4.13 mm
06-05
22.5° 15.8°
1.5 mm
Both models agree
Avg diff: 2.0°C
Where are air quality stations near Niterói?
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-05-30T14:23 UTC.