Smog in Phnom Penh — Live Data: AQI, Fine Dust, Wind, UV and Health Advice

Latest air quality data: Phnom Penh

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Pollution and air quality forecast for Phnom Penh. Today is Thursday, August 27, 2026. The following air pollution values have been recorded for Phnom Penh:

particulate matter (PM2.5) dust - 6 (Good)
particulate matter (PM10) suspended dust - 7 (Good)
ozone (O3) - 47 (Good)
nitrogen dioxide (NO2) - 3 (Good)
sulfur dioxide (SO2) - 1 (Good)
carbon monoxide (CO) - 209 (Good)

Real-time Air Quality Index (AQI) for Phnom Penh, Thursday, August 27, 2026: 1.

AQI 1 Good

What is the air quality in Phnom Penh today? Is the air polluted in Phnom Penh?. Is there smog?

Today (Thursday, August 27, 2026) air quality is good. The air quality has no effect on health. Everyone can continue their outdoor activities normally in Phnom Penh.

What is the current level of PM2.5 in Phnom Penh? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 6 (Good) For comparison, the highest level of PM2.5 in Phnom Penh in the last 7 days was: 8 (Wednesday, August 26, 2026) and the lowest: 4 (Thursday, August 20, 2026).

What is the level of PM10 today in Phnom Penh? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Phnom Penh is: 7 (Good)

How is the O3 level today in Phnom Penh? (ozone (O3))
47 (Good)

How high is the level of NO2? (nitrogen dioxide (NO2))
3 (Good)

What is the level of SO2 pollution? (sulfur dioxide (SO2))
1 (Good)

How high is the CO level? (carbon monoxide (CO))
209 (Good)

Current data Thursday, August 27, 2026 at 8:00 AM

PM2,5 6 (Good)

PM10 7 (Good)

O3 47 (Good)

NO2 3 (Good)

SO2 1 (Good)

CO 209 (Good)

Data on air pollution from recent days in Phnom Penh

index	2026-08-27	2026-08-26	2026-08-25	2026-08-24	2026-08-23	2026-08-22	2026-08-21	2026-08-20
pm25	6 Good	8 Good	6 Good	6 Good	8 Good	5 Good	6 Good	4 Good
pm10	8 Good	12 Good	9 Good	8 Good	10 Good	6 Good	8 Good	5 Good
o3	47 Good	46 Good	45 Good	46 Good	54 Good	47 Good	48 Good	46 Good
no2	3 Good	2 Good	2 Good	2 Good	3 Good	3 Good	3 Good	3 Good
so2	1 Good	1 Good	1 Good	1 Good	1 Good	1 Good	2 Good	1 Good
co	184 Good	175 Good	166 Good	160 Good	188 Good	211 Good	180 Good	179 Good

data source »

Phnom Penh

Thursday, August 27, 2026 at 8:00 AM

PM2,5 5.6 (Good)

particulate matter (PM2.5) dust

PM10 7.2 (Good)

particulate matter (PM10) suspended dust

O3 47 (Good)

ozone (O3)

NO2 2.6 (Good)

nitrogen dioxide (NO2)

SO2 1.3 (Good)

sulfur dioxide (SO2)

CO 209 (Good)

carbon monoxide (CO)

Phnom Penh

index	2026-08-20	2026-08-21	2026-08-22	2026-08-23	2026-08-24	2026-08-25	2026-08-26	2026-08-27
pm25	4.1	6	5.2	8.2	6	6	8	6.3
pm10	5.2	7.8	6.4	10	8.2	8.6	12	8.5
o3	46	48	47	54	46	45	46	47
no2	2.9	3.4	2.7	3.2	2.2	2.2	2.3	2.5
so2	1.4	1.6	1.2	1.4	0.95	1.1	1.1	1.3
co	179	180	211	188	160	166	175	184

* Pollution data source: https://openaq.org () The data is licensed under CC-By 4.0

🌦️ Weather · 16-day Forecast — Cambodia

16-day weather forecast for Cambodia: today around 35°C (cloudy), lows near 25°C. Daily temperature and conditions, updated every day. Strong wind (about 27 km/h) is actively clearing smog and dust away.

☀️ UV Index · 16-day Forecast — Cambodia

The UV index in Cambodia today is 7.5 (high) — unprotected fair skin can burn in about 25 minutes.

📍 Air quality in nearby cities

Live PM2.5 around Phnom Penh — compare nearby locations.

Kampong Saom 7 µg/m³
Battambang 3 µg/m³
Siem Reap 2 µg/m³

Frequently asked questions

Is the air safe to breathe in Phnom Penh today?

The current average PM2.5 across Phnom Penh is about 6 µg/m³, rated “Good”. Air quality is good — outdoor activities are fine for everyone.

What is the current PM2.5 level in Phnom Penh?

Right now PM2.5 in Phnom Penh averages about 6 µg/m³ (“Good”). PM2.5 are fine particles small enough to reach the lungs and bloodstream.

Which day last week had the worst air in Phnom Penh?

Over the past week, the highest daily PM2.5 in Phnom Penh was recorded on Sunday, August 23 (about 8 µg/m³).

What is the UV index in Phnom Penh today?

The UV index in Phnom Penh today is 7.5 (high) — unprotected fair skin can burn in about 25 minutes.

Does today's wind help disperse smog in Phnom Penh?

Strong wind (about 27 km/h) is actively clearing smog and dust away.

How is air quality measured?

Air quality here is based on PM2.5 — the concentration of fine particulate matter in µg/m³. Lower values mean cleaner air. Data is updated daily from Open-Meteo.