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

Latest air quality data: Liège

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

particulate matter (PM2.5) dust - 6 (Good)
particulate matter (PM10) suspended dust - 9 (Good)
ozone (O3) - 74 (Moderate)
nitrogen dioxide (NO2) - 5 (Good)
sulfur dioxide (SO2) - 1 (Good)
carbon monoxide (CO) - 162 (Good)

Real-time Air Quality Index (AQI) for Liège, Thursday, August 27, 2026: 2.

AQI 2 Moderate

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

Today (Thursday, August 27, 2026) air quality is moderate in Liège. Some pollutants in Liège may slightly affect very few hypersensitive individuals. Air pollutants in Liège may cause minor breathing discomfort to sensitive people.

What is the current level of PM2.5 in Liège? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 6 (Good) For comparison, the highest level of PM2.5 in Liège in the last 7 days was: 10 (Monday, August 24, 2026) and the lowest: 4 (Thursday, August 20, 2026).

What is the level of PM10 today in Liège? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Liège is: 9 (Good)

How is the O3 level today in Liège? (ozone (O3))
74 (Moderate)

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

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

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

Current data Thursday, August 27, 2026 at 3:00 AM

PM2,5 6 (Good)

PM10 9 (Good)

O3 74 (Moderate)

NO2 5 (Good)

SO2 1 (Good)

CO 162 (Good)

Data on air pollution from recent days in Liège

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	6 Good	8 Good	10 Good	8 Good	7 Good	5 Good	4 Good
pm10	10 Good	9 Good	11 Good	14 Good	14 Good	10 Good	8 Good	6 Good
o3	72 Moderate	68 Good	65 Good	66 Good	60 Good	50 Good	51 Good	57 Good
no2	8 Good	8 Good	9 Good	9 Good	8 Good	10 Good	9 Good	5 Good
so2	1 Good	0 Good	1 Good	1 Good	1 Good	1 Good	1 Good	1 Good
co	156 Good	170 Good	177 Good	199 Good	177 Good	162 Good	145 Good	148 Good

data source »

Liège

Thursday, August 27, 2026 at 3:00 AM

PM2,5 6 (Good)

particulate matter (PM2.5) dust

PM10 9.3 (Good)

particulate matter (PM10) suspended dust

O3 74 (Moderate)

ozone (O3)

NO2 5.2 (Good)

nitrogen dioxide (NO2)

SO2 0.6 (Good)

sulfur dioxide (SO2)

CO 162 (Good)

carbon monoxide (CO)

Liège

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	4.8	6.9	8.3	9.6	7.5	6.4	6.4
pm10	6.5	7.9	10	14	14	11	8.7	10
o3	57	51	50	60	66	65	68	72
no2	5.3	9	10	8.3	8.9	9.2	8.4	7.8
so2	0.54	0.75	0.97	0.77	1.2	0.78	0.44	0.58
co	148	145	162	177	199	177	170	156

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

🌦️ Weather · 16-day Forecast — Liège

16-day weather forecast for Liège: today around 24°C (cloudy), lows near 12°C. Daily temperature and conditions, updated every day. Strong wind (about 20 km/h) is actively clearing smog and dust away.

☀️ UV Index · 16-day Forecast — Liège

The UV index in Liège today is 5.6 (moderate) — unprotected fair skin can burn in about 35 minutes.

📍 Air quality in nearby cities

Live PM2.5 around Liège — compare nearby locations.

MaastrichtNetherlands 7 µg/m³
Namur 6 µg/m³
Brussels 7 µg/m³
Antwerp 11 µg/m³
Ghent 10 µg/m³
Charleroi 6 µg/m³
Brugge 14 µg/m³

Frequently asked questions

Is the air safe to breathe in Liège today?

The current average PM2.5 across Liège 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 Liège?

Right now PM2.5 in Liège 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 Liège?

Over the past week, the highest daily PM2.5 in Liège was recorded on Monday, August 24 (about 10 µg/m³).

What is the UV index in Liège today?

The UV index in Liège today is 5.6 (moderate) — unprotected fair skin can burn in about 35 minutes.

Does today's wind help disperse smog in Liège?

Strong wind (about 20 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.