What is the air quality in Waterloo today?

The current Air Quality Index (AQI) in Waterloo is 58 (Moderate). PM2.5 concentration is 15.6 µg/m³.

What is the temperature in Waterloo right now?

The current temperature in Waterloo is 24.0°C (feels like 24.0°C). Humidity is 91.2% and wind speed is 68.9 km/h.

Air Quality in Waterloo, Sierra Leone

Rain

24.0°C · 91.2% humidity

24.0°

Feels 24.0°

Moderate

Unusually sensitive people should consider reducing prolonged outdoor exertion.

8 stations

Nearby Monitoring Stations

AQI Forecast

24 3am

58 6am

37 9am

29 12pm

26 3pm

25 6pm

24 9pm

24 12am

Air Quality Index Trend

45h · 11 stn

View full history →

Current PM2.5 concentration in Waterloo is 1.0× the WHO 24-hour guideline of 15 µg/m³.

91.2%

Humidity

68.9 km/h

Wind S

1015.8 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

15.6 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Waterloo?

Temperature & Precipitation

PM2.5 Trend

45h · 11 stations

PM2.515.6 µg/m³ ✓ WHO

Moderate

PM1013.7 µg/m³

Good

UV INDEX0.7

Low

Station readings (8 stations within 25 km)

15.6

Median

17.84

Average

2.66

Low

72.86

High

PM2.5 µg/m³ · Model: 5.9 · Bias: -9.7

What is the 7-day forecast for Waterloo?

07-22

25.6° 24.0°

29.06 mm

07-23

25.3° 25.0°

17.13 mm

07-24

26.2° 24.5°

14.19 mm

07-25

26.0° 24.6°

31.69 mm

07-26

25.7° 24.7°

37.63 mm

07-27

26.1° 24.7°

13.5 mm

07-28

25.6° 23.9°

25.19 mm

Both models agree Avg diff: 1.2°C

Where are air quality stations near Waterloo?

Allen Town Police Station

11.2 km PM2.5: 14.9 µg/m³

Lalaba Town Police Station

13.7 km PM2.5: 18.3 µg/m³

Shell Police Station

20.1 km PM2.5: 22.2 µg/m³

Ross Road Hospital

22.7 km PM2.5: 2.9 µg/m³

Mountain Cut

23.3 km PM2.5: 7.4 µg/m³

Cottage Hospital

23.4 km PM2.5: 12.6 µg/m³

SLBC

23.6 km PM2.5: 19.4 µg/m³

Freetown City Council

24.7 km PM2.5: 5.7 µg/m³

169

Connaught Hospital

24.8 km PM2.5: 89.7 µg/m³

34 Hospital

25.1 km PM2.5: 5.9 µg/m³

What cities are near Waterloo?

99 Freetown 46 Goderich 37 Port Loko 37 Lunsar 25 Mile 91 25 Njala 25 Forécariah 25 Makeni 26 Bumpe 25 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 2026-07-22T06:43 UTC.