Air Quality in Chilaw, Sri Lanka

Drizzle
28.6°C · 81.3% humidity
28.6°
Feels 35.1°
38
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
41 9pm
41
41
38 12am
41
41
41 3am
41
41
41 6am
41
41
41 9am
41
41
41 12pm
41
41
41 3pm
41
41
41 6pm
41
41
Station readings
33
40
40
CAMS model adj +14
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
AD 728×90

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 1.8× the WHO annual guideline of 5 µg/m³.

81.3%
Humidity
161.0 km/h
Wind SW
1009.7 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
38
9.07 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Chilaw?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station
PM2.59.07 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (3 stations within 25 km)
9.07
Median
9.07
Average
8.0
Low
9.6
High
PM2.5 µg/m³ · Model: 6.25 · Bias: -2.8

What is the 7-day forecast for Chilaw?

05-28
28.9° 28.6°
2.12 mm
05-29
28.8° 28.4°
8.0 mm
05-30
28.6° 28.2°
10.06 mm
05-31
28.6° 28.5°
7.5 mm
06-01
28.5° 28.1°
2.88 mm
06-02
28.5° 28.1°
2.31 mm
06-03
28.5° 28.1°
3.88 mm
Both models agree Avg diff: 0.3°C

Where are air quality stations near Chilaw?

23
Chilaw
0.8 km PM2.5: 5.4 µg/m³ PM10: 12.4 µg/m³
38
Chilaw
0.8 km PM2.5: 9.2 µg/m³ PM10: 14.2 µg/m³
21
Chilaw
0.8 km PM2.5: 5.0 µg/m³ PM10: 10.4 µg/m³
42
Chilaw
0.8 km PM2.5: 10.0 µg/m³ PM10: 15.4 µg/m³
38
Chilaw
0.8 km PM2.5: 9.2 µg/m³ PM10: 19.4 µg/m³
23
Chilaw
0.8 km PM2.5: 5.6 µg/m³ PM10: 11.8 µg/m³
42
Chilaw
0.8 km PM2.5: 10.2 µg/m³ PM10: 20.2 µg/m³
35
Chilaw
0.8 km PM2.5: 8.4 µg/m³ PM10: 17.6 µg/m³
57
Chilaw
0.8 km PM2.5: 15.0 µg/m³ PM10: 27.2 µg/m³
71
Chilaw
0.8 km PM2.5: 21.8 µg/m³ PM10: 35.2 µg/m³

What cities are near Chilaw?

37 Negombo 37 Katunayaka 38 Puttalam 50 Ja Ela 50 Kandana 51 Welisara 38 Kurunegala 51 Hendala 52 Wattala 52 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 2026-05-28T19:01 UTC.