Toggle navigation
Places
AQI (US)
AQC (Australia)
AQHI (Canada)
AQI (China)
AQI (Netherlands)
AQI (US)
CAQI (Europe)
AQI (UK)
AQI (India)
English
Français
Deutsch
日本語
한국어
简体中文
繁體中文
Europe
Germany
North Rhine-Westphalia
Cologne
Rhein-Sieg-Kreis
Troisdorf
Sieglar
Site 33954
AQI (US)
AQC (Australia)
AQHI (Canada)
AQI (China)
AQI (Netherlands)
AQI (US)
CAQI (Europe)
AQI (UK)
AQI (India)
Site 33954
Sieglar, Rhein-Sieg-Kreis
2025-04-05 21:23
AQI (US)
Good
6
Pollutants
|
Pollens
PM2.5
μg/m³
0.9
PM10
μg/m³
5.3
Birch
12.0
Alder
3.0
Ragweed
0
Mugwort
0
Olive Tree
0
Grasses
0
Weather
℃
℃
℉
9℃
57%
11 kph
0 of 11
Historical Data
Hourly
Hourly
Daily
AQI (US)
AQI (US)
Allergy Risk
PM2.5
PM10
Birch
Alder
Ragweed
Mugwort
Olive Tree
Grasses
Data Sources
http://luftdaten.info
Get the App
Scan QR Code
Air Matters
Realtime broadcasting air quality information on your phone for more than 180 countries.
iPhone, iPad
Android
Scan QR Code to Download App
iOS
Google Play
Download APK
Rischio allergia
Rischio allergia
AQI
O3
PM10
NO2
PM2.5
Betulla
Ontano
Ambrosia
Artemisia
Olive Tree
Graminacee
8.9
9.5
11.9
10.2
7.9
12.0
11.5
11.2
12.0
12.0
10.3
12.0
12.0
11.1
10.8
10.4
12.0
12.0
12.0
9.0
4.4
12.0
9.4
12.0
12.0
12.0
12.0
12.0
8.1
10.6
4.5
12.0
11.7
5.8
12.0
10.6
11.0
6.0
9.4
3.4
11.7
9.6
10.0
11.6
12.0
12.0
6.0
9.0
3.3
11.8
9.0
12.0
10.0
12.0
12.0
9.2
3.2
12.0
12.0
12.0
12.0
3.4
12.0
11.7
12.0
12.0
12.0
9.0
12.0
12.0
3.0
9.6
12.0
10.7
9.9
12.0
12.0
3.2
12.0
11.0
6.0
11.6
10.6
11.8
9.0
12.0
12.0
3.0
12.0
9.8
11.6
9.0
11.2
3.0
10.5
12.0
12.0
9.0
+
−
Leaflet
| ©
OpenStreetMap
contributors
Cities Nearby
Troisdorf
AQI 29
Siegburg
AQI 29
Sankt Augustin
AQI 29
Niederkassel
AQI 32
Lohmar
AQI 50
Bonn
AQI 29
Alfter
AQI 29
Wesseling
AQI 34
Bornheim
AQI 33
Rösrath
AQI 49
Königswinter
AQI 29
Air Matters © 2025