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
AD 728×90

Air Quality Index Trend

46h · 10 stn

Current 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▲
69
20.54 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Waterloo?

Temperature & Precipitation

PM2.5 Trend

46h · 10 stations
PM2.520.54 µg/m³ ×1.4 WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
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
11.2 km PM2.5: 18.8 µg/m³
74
Lalaba Town Police Station
13.7 km PM2.5: 23.2 µg/m³
83
Shell Police Station
20.1 km PM2.5: 27.5 µg/m³
72
Ross Road Hospital
22.7 km PM2.5: 22.0 µg/m³
78
Cottage Hospital
23.4 km PM2.5: 25.0 µg/m³
38
SLBC
23.6 km PM2.5: 9.2 µg/m³
41
Freetown City Council
24.7 km PM2.5: 9.8 µg/m³
59
Connaught Hospital
24.8 km PM2.5: 15.8 µg/m³
29
34 Hospital
25.1 km PM2.5: 7.0 µg/m³
55
St Edward's Sec. School
25.6 km PM2.5: 13.9 µg/m³

What cities are near Waterloo?

59 Freetown 52 Goderich 25 Port Loko 30 Lunsar 26 Mile 91 41 Njala 25 Forécariah 41 Makeni 26 Bumpe 27 Conakry
Get AQI alerts for Waterloo

Notify me when air quality reaches:

Free · No account · Unsubscribe any time

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.