Tielt, Flanders, Belgium Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Tielt, Flanders, Belgium
AQI Trends: Highest and Lowest
Same Day Analysis (20th September ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 33 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 20th Sep - 21st Sep 2025
Tielt, Flanders, Belgium
7 AM20th Sep 2025
8 PM
6 AM21st Sep 2025
50AQI
30AQI
34AQI
15AQI
In the last 24 hours,
Tielt's AQI reached its highest point of 50 at 1 PM during the Day, while the lowest point, undefined, was recorded at 6 AM during the Night between 20th Sep and 21st Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Tielt, Flanders, Belgium
16°C11/20°C
16°C11/21°C
16°C9/24°C
19°C11/27°C
21°C15/29°C
20°C14/26°C
18°C15/24°C
16°C13/21°C
18°C12/23°C
20°C17/25°C
18°C14/24°C
17°C12/22°C
19°C16/23°C
17°C13/23°C
16°C12/22°C
19°C12/26°C
22°C13/33°C
19°C13/24°C
16°C12/22°C
17°C12/23°C
15°C12/18°C
15°C11/20°C
15°C11/20°C
15°C10/21°C
17°C15/20°C
16°C13/19°C
16°C12/21°C
19°C15/24°C
21°C15/29°C
20°C16/22°C
--°C/°C
25AQI
20AQI
23AQI
21AQI
2025 Days Vs Air Quality
Tielt, Flanders, Belgium
94%
108
6%
7
Total number of days with different AQI categories in last 264 days in 2025 (101 days remaining)
Under WHO’s Safe Air Quality Limits: 94%
Health Risk Level:
Very Low
In 2025, 94% of 264 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Tielt, Flanders, Belgium
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
28AQI
31AQI
41AQI
42AQI
28AQI
30AQI
21AQI
18AQI
18AQI
15AQI
17AQI
49AQI
61AQI
50AQI
51AQI
57AQI
53AQI
42AQI
39AQI
41AQI
43AQI
48AQI
48AQI
41AQI
38AQI
30AQI
28AQI
27AQI
25AQI
24AQI
20AQI
24AQI
34AQI
42AQI
49AQI
46AQI
34AQI
25AQI
22AQI
25AQI
23AQI
28AQI
35AQI
41AQI
40AQI
42AQI
49AQI
33AQI
30AQI
40AQI
40AQI
41AQI
37AQI
25AQI
21AQI
22AQI
37AQI
43AQI
51AQI
41AQI
35AQI
41AQI
42AQI
31AQI
22AQI
21AQI
22AQI
23AQI
22AQI
24AQI
27AQI
31AQI
39AQI
41AQI
48AQI
47AQI
54AQI
55AQI
43AQI
47AQI
36AQI
27AQI
27AQI
30AQI
27AQI
22AQI
21AQI
21AQI
23AQI
28AQI
28AQI
28AQI
23AQI
21AQI
19AQI
20AQI
19AQI
17AQI
17AQI
19AQI
19AQI
20AQI
22AQI
23AQI
24AQI
21AQI
19AQI
17AQI
17AQI
20AQI
24AQI
22AQI
19AQI
27AQI
33AQI
33AQI
35AQI
36AQI
31AQI
21AQI
No. of days
202532AQI
Highest AQI recorded in
July36AQI
Lowest AQI recorded in
September21AQI
Most & Least Polluted Years Over the Last 1 Years
Tielt's annual 2025 AQI (32) shows an average percentage change of NaN% (improved AQI) compared to previous years: .