Air Quality in Waterloo, Sierra Leone

Rain
25.6°C · 88.6% humidity
25.6°
Feels 25.6°
73
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
7 stations

Nearby Monitoring Stations

AQI Forecast
25 11pm
25
25
73 2am
59
50
43 5am
38
34
31 8am
30
28
27 11am
27
25
25 2pm
25
24
25 5pm
25
25
25 8pm
25
25
AD 728×90

Air Quality Index Trend

46h · 10 stn

Current PM2.5 concentration in Waterloo is 1.5× the WHO 24-hour guideline of 15 µg/m³.

88.6%
Humidity
24.5 km/h
Wind NNW
1016.1 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
73
22.46 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Waterloo?

Temperature & Precipitation

PM2.5 Trend

46h · 10 stations
PM2.522.46 µg/m³ ×1.5 WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (7 stations within 25 km)
22.46
Median
22.55
Average
10.54
Low
33.56
High
PM2.5 µg/m³ · Model: 6.0 · Bias: -16.5

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?

67
Allen Town Police Station
11.2 km PM2.5: 19.9 µg/m³
76
Lalaba Town Police Station
13.7 km PM2.5: 23.8 µg/m³
96
Shell Police Station
20.1 km PM2.5: 33.6 µg/m³
81
Ross Road Hospital
22.7 km PM2.5: 26.6 µg/m³
85
Cottage Hospital
23.4 km PM2.5: 28.1 µg/m³
44
SLBC
23.6 km PM2.5: 10.5 µg/m³
41
Freetown City Council
24.7 km PM2.5: 9.8 µg/m³
58
Connaught Hospital
24.8 km PM2.5: 15.3 µg/m³
38
34 Hospital
25.1 km PM2.5: 9.2 µg/m³
52
St Edward's Sec. School
25.6 km PM2.5: 12.5 µg/m³

What cities are near Waterloo?

58 Freetown 55 Goderich 25 Port Loko 29 Lunsar 26 Mile 91 41 Njala 26 Forécariah 41 Makeni 26 Bumpe 27 Conakry
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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 2026-05-31T02:50 UTC.