Air Quality in Waterloo, Sierra Leone
Drizzle
25.8°C · 83.1% humidity
25.8°
Feels 25.8°
69
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
7 stations
Nearby Monitoring Stations
AQI Forecast
25
12am
25
25
69
3am
57
48
41
6am
37
33
31
9am
29
28
27
12pm
26
25
25
3pm
25
25
25
6pm
25
25
25
9pm
25
25
Air Quality Index Trend
46h · 10 stnCurrent PM2.5 concentration in Waterloo is 1.4× the WHO 24-hour guideline of 15 µg/m³.
83.1%
Humidity
22.1 km/h
Wind NNE
1014.2 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
20.54 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Waterloo?
Temperature & Precipitation
PM2.5 Trend
46h · 10 stationsPM2.520.54 µg/m³
×1.4 WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (7 stations within 25 km)
20.54
Median
20.19
Average
9.22
Low
27.48
High
PM2.5 µg/m³ · Model: 6.0 · Bias: -14.5
What is the 7-day forecast for Waterloo?
05-31
27.7° 25.6°
5.31 mm
06-01
27.4° 24.0°
36.0 mm
06-02
27.4° 26.2°
0.63 mm
06-03
27.7° 25.3°
6.5 mm
06-04
27.0° 26.2°
3.38 mm
06-05
27.4° 26.3°
3.19 mm
06-06
27.9° 26.6°
10.0 mm
Both models agree
Avg diff: 1.0°C
Where are air quality stations near Waterloo?
65
Allen Town Police Station
74
Lalaba Town Police Station
83
Shell Police Station
72
Ross Road Hospital
78
Cottage Hospital
38
SLBC
41
Freetown City Council
59
Connaught Hospital
29
34 Hospital
55
St Edward's Sec. School
What cities are near Waterloo?
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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 2026-05-31T03:58 UTC.