Air Quality in Chilaw, Sri Lanka

Drizzle
27.6°C · 84.8% humidity
27.6°
Feels 33.8°
67
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
3 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
55 12pm
55
55
67 3pm
64
61
59 6pm
58
57
57 9pm
56
56
56 12am
55
55
55 3am
55
55
55 6am
55
55
55 9am
55
55
Station readings
44
66
80
CAMS model adj +28
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27

Air Quality Index Trend

47h · 1 stn

Chilaw's air quality is affected by vehicle emissions, industrial activity, and seasonal crop burning. Air quality typically worsens from November to February due to temperature inversions trapping pollutants near the surface. Current PM2.5 concentration in Chilaw is 1.3× the WHO 24-hour guideline of 15 µg/m³.

84.8%
Humidity
156.0 km/h
Wind WSW
1008.0 hPa
Pressure
6.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
67
19.73 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Chilaw?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station
PM2.519.73 µg/m³ ×1.3 WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX6.9
High
Station readings (3 stations within 25 km)
19.73
Median
19.73
Average
14.0
Low
26.0
High
PM2.5 µg/m³ · Model: 6.15 · Bias: -13.6

What is the 7-day forecast for Chilaw?

09-22
28.0° 27.6°
1.44 mm
09-23
27.9° 27.6°
1.94 mm
09-24
28.0° 27.7°
3.88 mm
09-25
27.8° 27.6°
8.56 mm
09-26
27.8° 26.8°
2.63 mm
09-27
28.0° 27.5°
5.13 mm
09-28
28.0° 27.8°
1.19 mm
Both models agree Avg diff: 0.5°C

Where are air quality stations near Chilaw?

43
Chilaw
0.8 km PM2.5: 10.4 µg/m³ PM10: 19.8 µg/m³
66
Chilaw
0.8 km PM2.5: 19.2 µg/m³ PM10: 32.4 µg/m³
63
Chilaw
0.8 km PM2.5: 17.8 µg/m³ PM10: 30.4 µg/m³
36
Chilaw
0.8 km PM2.5: 8.6 µg/m³ PM10: 16.6 µg/m³
55
Chilaw
0.8 km PM2.5: 14.0 µg/m³ PM10: 24.7 µg/m³
33
Chilaw
0.8 km PM2.5: 8.0 µg/m³ PM10: 16.4 µg/m³
28
Chilaw
0.8 km PM2.5: 6.6 µg/m³ PM10: 13.8 µg/m³
42
Chilaw
0.8 km PM2.5: 10.0 µg/m³ PM10: 17.8 µg/m³
44
Chilaw
0.8 km PM2.5: 10.6 µg/m³ PM10: 20.0 µg/m³
55
Chilaw
0.8 km PM2.5: 14.0 µg/m³ PM10: 24.6 µg/m³

What cities are near Chilaw?

38 Negombo 38 Katunayaka 36 Puttalam 31 Ja Ela 32 Kandana 32 Welisara 75 Kurunegala 32 Hendala 32 Wattala 32 Peliyagoda
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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 2026-09-22T10:45 UTC.