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

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Latest air quality data: Köln

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

particulate matter (PM2.5) dust - 7 (Good)
particulate matter (PM10) suspended dust - 12 (Good)
ozone (O3) - 63 (Good)
nitrogen dioxide (NO2) - 11 (Good)
sulfur dioxide (SO2) - 1 (Good)
carbon monoxide (CO) - 181 (Good)

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

AQI 1 Good

What is the air quality in Köln today? Is the air polluted in Köln?. 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 Köln.

What is the current level of PM2.5 in Köln? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 7 (Good) For comparison, the highest level of PM2.5 in Köln in the last 7 days was: 9 (Monday, August 24, 2026) and the lowest: 6 (Friday, August 21, 2026).

What is the level of PM10 today in Köln? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Köln is: 12 (Good)

How is the O3 level today in Köln? (ozone (O3))
63 (Good)

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

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

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

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

PM2,5 7 (Good)

PM10 12 (Good)

O3 63 (Good)

NO2 11 (Good)

SO2 1 (Good)

CO 181 (Good)

Data on air pollution from recent days in Köln

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	8 Good	8 Good	7 Good	9 Good	9 Good	7 Good	6 Good	7 Good
pm10	14 Good	11 Good	11 Good	13 Good	14 Good	11 Good	11 Good	10 Good
o3	73 Moderate	66 Good	68 Good	56 Good	55 Good	49 Good	46 Good	53 Good
no2	15 Good	15 Good	11 Good	15 Good	14 Good	15 Good	17 Good	15 Good
so2	2 Good	2 Good	2 Good	2 Good	2 Good	2 Good	3 Good	2 Good
co	188 Good	190 Good	182 Good	210 Good	206 Good	186 Good	196 Good	219 Good

data source »

Köln

Thursday, August 27, 2026 at 3:00 AM

PM2,5 7.1 (Good)

particulate matter (PM2.5) dust

PM10 12 (Good)

particulate matter (PM10) suspended dust

O3 63 (Good)

ozone (O3)

NO2 11 (Good)

nitrogen dioxide (NO2)

SO2 1.3 (Good)

sulfur dioxide (SO2)

CO 181 (Good)

carbon monoxide (CO)

Köln

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	6.8	5.8	7.4	8.6	8.6	7	8.1	8.4
pm10	10	11	11	14	13	11	11	14
o3	53	46	49	55	56	68	66	73
no2	15	17	15	14	15	11	15	15
so2	2.3	3	2.3	2.5	1.9	1.8	2.1	2.3
co	219	196	186	206	210	182	190	188

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

🌦️ Weather · 16-day Forecast — Germany

16-day weather forecast for Germany: today around 24°C (clear sky), lows near 10°C. Daily temperature and conditions, updated every day. A moderate breeze (about 15 km/h) is partially dispersing pollutants today.

☀️ UV Index · 16-day Forecast — Germany

The UV index in Germany today is 3.5 (moderate) — unprotected fair skin can burn in about 55 minutes.

📍 Air quality in nearby cities

Live PM2.5 around Köln — compare nearby locations.

Berlin 8 µg/m³
Hamburg 7 µg/m³
München 8 µg/m³
Frankfurt 7 µg/m³
Essen 9 µg/m³
Stuttgart 6 µg/m³
Dortmund 10 µg/m³
Düsseldorf 8 µg/m³

Frequently asked questions

Is the air safe to breathe in Köln today?

The current average PM2.5 across Köln is about 7 µg/m³, rated “Good”. Air quality is good — outdoor activities are fine for everyone.

What is the current PM2.5 level in Köln?

Right now PM2.5 in Köln averages about 7 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 Köln?

Over the past week, the highest daily PM2.5 in Köln was recorded on Monday, August 24 (about 9 µg/m³).

What is the UV index in Köln today?

The UV index in Köln today is 3.5 (moderate) — unprotected fair skin can burn in about 55 minutes.

Does today's wind help disperse smog in Köln?

A moderate breeze (about 15 km/h) is partially dispersing pollutants today.

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.