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HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Sint Niklaas, Flanders, Belgium Historical Air Quality Analysis

Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!

Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+

September Air Quality Analysis

Sint Niklaas, Flanders, Belgium

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
9th Sep 2023
110AQI
Lowest AQI recorded on
16th Sep 2022
11AQI

Same Day Analysis (28th September):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 40 of Good air quality on the same day.

Day & Night AQI Trend: 27th Sep - 28th Sep 2026

Sint Niklaas, Flanders, Belgium

AQI
Day
Night
.

7 AM27th Sep 2026

8 PM

6 AM28th Sep 2026

Day time
Avg. Highest Time
4PM27th Sep

71AQI

Avg. Lowest Time
9AM27th Sep

25AQI

Night time
Avg. Highest Time
5AM28th Sep

42AQI

Avg. Lowest Time
10PM27th Sep

31AQI

In the last 24 hours,

Sint Niklaas's AQI reached its highest point of 71 at 4 PM during the Day, while the lowest point, 25, was recorded at 9 AM during the Day between 27th Sep and 28th Sep 2026.

Day & Night AQI Trend : Aug - Sep 2026

Sint Niklaas, Flanders, Belgium

AugSep
30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th
Day
Night
30th Aug 2026257 AMAQI
30th Aug 2026258 AMAQI
30th Aug 2026179 AMAQI
30th Aug 20261610 AMAQI
30th Aug 20262111 AMAQI
30th Aug 20262112 PMAQI
30th Aug 2026211 PMAQI
30th Aug 2026162 PMAQI
30th Aug 2026233 PMAQI
30th Aug 2026214 PMAQI
30th Aug 2026155 PMAQI
30th Aug 2026256 PMAQI
30th Aug 2026187 PMAQI
30th Aug 2026258 PMAQI
30th Aug 2026539 PMAQI
30th Aug 20266710 PMAQI
30th Aug 20261811 PMAQI
31st Aug 20261312 AMAQI
31st Aug 2026401 AMAQI
31st Aug 2026152 AMAQI
31st Aug 2026163 AMAQI
31st Aug 2026134 AMAQI
31st Aug 2026125 AMAQI
31st Aug 2026126 AMAQI

19°C17/23°C

31st Aug 2026127 AMAQI
31st Aug 2026128 AMAQI
31st Aug 2026129 AMAQI
31st Aug 20261210 AMAQI
31st Aug 20261211 AMAQI
31st Aug 20261212 PMAQI
31st Aug 2026231 PMAQI
31st Aug 2026252 PMAQI
31st Aug 2026183 PMAQI
31st Aug 2026104 PMAQI
31st Aug 2026105 PMAQI
31st Aug 2026226 PMAQI
31st Aug 2026187 PMAQI
31st Aug 2026198 PMAQI
31st Aug 2026299 PMAQI
31st Aug 20264210 PMAQI
31st Aug 20261211 PMAQI
1st Sep 20261812 AMAQI
1st Sep 2026231 AMAQI
1st Sep 2026212 AMAQI
1st Sep 2026213 AMAQI
1st Sep 2026214 AMAQI
1st Sep 2026215 AMAQI
1st Sep 2026216 AMAQI

18°C14/22°C

1st Sep 2026217 AMAQI
1st Sep 2026238 AMAQI
1st Sep 2026239 AMAQI
1st Sep 20262510 AMAQI
1st Sep 20262311 AMAQI
1st Sep 20262312 PMAQI
1st Sep 2026291 PMAQI
1st Sep 2026212 PMAQI
1st Sep 2026233 PMAQI
1st Sep 2026174 PMAQI
1st Sep 2026125 PMAQI
1st Sep 2026256 PMAQI
1st Sep 2026317 PMAQI
1st Sep 2026448 PMAQI
1st Sep 2026129 PMAQI
1st Sep 20261410 PMAQI
1st Sep 20262011 PMAQI
2nd Sep 20262112 AMAQI
2nd Sep 2026121 AMAQI
2nd Sep 2026172 AMAQI
2nd Sep 2026213 AMAQI
2nd Sep 2026254 AMAQI
2nd Sep 2026215 AMAQI
2nd Sep 2026236 AMAQI

17°C14/21°C

2nd Sep 2026237 AMAQI
2nd Sep 2026218 AMAQI
2nd Sep 2026279 AMAQI
2nd Sep 20262710 AMAQI
2nd Sep 20262311 AMAQI
2nd Sep 20262312 PMAQI
2nd Sep 2026251 PMAQI
2nd Sep 2026252 PMAQI
2nd Sep 2026233 PMAQI
2nd Sep 2026194 PMAQI
2nd Sep 2026145 PMAQI
2nd Sep 2026146 PMAQI
2nd Sep 2026147 PMAQI
2nd Sep 2026128 PMAQI
2nd Sep 2026189 PMAQI
2nd Sep 20262510 PMAQI
2nd Sep 20262711 PMAQI
3rd Sep 20263412 AMAQI
3rd Sep 2026221 AMAQI
3rd Sep 2026142 AMAQI
3rd Sep 2026423 AMAQI
3rd Sep 2026274 AMAQI
3rd Sep 2026205 AMAQI
3rd Sep 2026126 AMAQI

18°C14/23°C

3rd Sep 2026107 AMAQI
3rd Sep 2026238 AMAQI
3rd Sep 2026189 AMAQI
3rd Sep 20261010 AMAQI
3rd Sep 20261211 AMAQI
3rd Sep 20261012 PMAQI
3rd Sep 2026101 PMAQI
3rd Sep 2026102 PMAQI
3rd Sep 2026253 PMAQI
3rd Sep 2026254 PMAQI
3rd Sep 2026235 PMAQI
3rd Sep 2026346 PMAQI
3rd Sep 2026467 PMAQI
3rd Sep 2026108 PMAQI
3rd Sep 2026469 PMAQI
3rd Sep 20261810 PMAQI
3rd Sep 2026811 PMAQI
4th Sep 2026812 AMAQI
4th Sep 202681 AMAQI
4th Sep 2026142 AMAQI
4th Sep 2026193 AMAQI
4th Sep 2026174 AMAQI
4th Sep 202685 AMAQI
4th Sep 202686 AMAQI

19°C17/23°C

4th Sep 202687 AMAQI
4th Sep 202688 AMAQI
4th Sep 202689 AMAQI
4th Sep 2026810 AMAQI
4th Sep 2026811 AMAQI
4th Sep 2026812 PMAQI
4th Sep 202681 PMAQI
4th Sep 2026162 PMAQI
4th Sep 2026163 PMAQI
4th Sep 2026104 PMAQI
4th Sep 202695 PMAQI
4th Sep 202696 PMAQI
4th Sep 2026127 PMAQI
4th Sep 2026108 PMAQI
4th Sep 2026169 PMAQI
4th Sep 20261610 PMAQI
4th Sep 2026811 PMAQI
5th Sep 20263612 AMAQI
5th Sep 202681 AMAQI
5th Sep 2026252 AMAQI
5th Sep 2026183 AMAQI
5th Sep 2026224 AMAQI
5th Sep 202695 AMAQI
5th Sep 2026216 AMAQI

20°C18/25°C

5th Sep 2026117 AMAQI
5th Sep 2026158 AMAQI
5th Sep 2026219 AMAQI
5th Sep 20262110 AMAQI
5th Sep 20262311 AMAQI
5th Sep 20262512 PMAQI
5th Sep 2026201 PMAQI
5th Sep 2026122 PMAQI
5th Sep 2026123 PMAQI
5th Sep 2026124 PMAQI
5th Sep 2026125 PMAQI
5th Sep 2026126 PMAQI
5th Sep 2026127 PMAQI
5th Sep 2026188 PMAQI
5th Sep 2026299 PMAQI
5th Sep 20263110 PMAQI
5th Sep 20262711 PMAQI
6th Sep 20262912 AMAQI
6th Sep 2026251 AMAQI
6th Sep 2026252 AMAQI
6th Sep 2026253 AMAQI
6th Sep 2026274 AMAQI
6th Sep 2026275 AMAQI
6th Sep 2026256 AMAQI

17°C14/21°C

6th Sep 2026347 AMAQI
6th Sep 2026408 AMAQI
6th Sep 2026349 AMAQI
6th Sep 20263110 AMAQI
6th Sep 20262311 AMAQI
6th Sep 20261612 PMAQI
6th Sep 2026181 PMAQI
6th Sep 2026182 PMAQI
6th Sep 2026123 PMAQI
6th Sep 2026254 PMAQI
6th Sep 2026385 PMAQI
6th Sep 2026206 PMAQI
6th Sep 2026227 PMAQI
6th Sep 2026338 PMAQI
6th Sep 2026239 PMAQI
6th Sep 20263110 PMAQI
6th Sep 20264011 PMAQI
7th Sep 20263412 AMAQI
7th Sep 2026421 AMAQI
7th Sep 2026362 AMAQI
7th Sep 2026363 AMAQI
7th Sep 2026274 AMAQI
7th Sep 2026215 AMAQI
7th Sep 2026216 AMAQI

19°C13/25°C

7th Sep 2026237 AMAQI
7th Sep 2026258 AMAQI
7th Sep 2026239 AMAQI
7th Sep 20262910 AMAQI
7th Sep 20263811 AMAQI
7th Sep 20263312 PMAQI
7th Sep 2026231 PMAQI
7th Sep 2026272 PMAQI
7th Sep 2026213 PMAQI
7th Sep 2026254 PMAQI
7th Sep 2026275 PMAQI
7th Sep 2026336 PMAQI
7th Sep 2026317 PMAQI
7th Sep 2026278 PMAQI
7th Sep 2026209 PMAQI
7th Sep 20261210 PMAQI
7th Sep 20261411 PMAQI
8th Sep 20261812 AMAQI
8th Sep 2026251 AMAQI
8th Sep 2026122 AMAQI
8th Sep 2026123 AMAQI
8th Sep 2026124 AMAQI
8th Sep 2026125 AMAQI
8th Sep 202696 AMAQI

23°C19/29°C

8th Sep 2026107 AMAQI
8th Sep 2026108 AMAQI
8th Sep 2026189 AMAQI
8th Sep 20262510 AMAQI
8th Sep 20262711 AMAQI
8th Sep 20262912 PMAQI
8th Sep 2026271 PMAQI
8th Sep 2026252 PMAQI
8th Sep 2026253 PMAQI
8th Sep 2026254 PMAQI
8th Sep 2026215 PMAQI
8th Sep 2026206 PMAQI
8th Sep 2026127 PMAQI
8th Sep 2026128 PMAQI
8th Sep 2026129 PMAQI
8th Sep 20261010 PMAQI
8th Sep 20261011 PMAQI
9th Sep 2026812 AMAQI
9th Sep 2026181 AMAQI
9th Sep 2026252 AMAQI
9th Sep 2026213 AMAQI
9th Sep 2026114 AMAQI
9th Sep 2026165 AMAQI
9th Sep 2026166 AMAQI

18°C14/22°C

9th Sep 2026127 AMAQI
9th Sep 2026128 AMAQI
9th Sep 2026469 AMAQI
9th Sep 20262510 AMAQI
9th Sep 20262711 AMAQI
9th Sep 20262912 PMAQI
9th Sep 2026231 PMAQI
9th Sep 2026212 PMAQI
9th Sep 2026123 PMAQI
9th Sep 2026124 PMAQI
9th Sep 2026185 PMAQI
9th Sep 2026256 PMAQI
9th Sep 2026257 PMAQI
9th Sep 2026128 PMAQI
9th Sep 2026129 PMAQI
9th Sep 20261210 PMAQI
9th Sep 20261611 PMAQI
10th Sep 20262312 AMAQI
10th Sep 2026231 AMAQI
10th Sep 2026162 AMAQI
10th Sep 2026203 AMAQI
10th Sep 2026184 AMAQI
10th Sep 2026485 AMAQI
10th Sep 2026316 AMAQI

14°C11/18°C

10th Sep 2026237 AMAQI
10th Sep 2026258 AMAQI
10th Sep 2026259 AMAQI
10th Sep 20262310 AMAQI
10th Sep 20262311 AMAQI
10th Sep 20263112 PMAQI
10th Sep 2026271 PMAQI
10th Sep 2026362 PMAQI
10th Sep 2026343 PMAQI
10th Sep 2026274 PMAQI
10th Sep 2026445 PMAQI
10th Sep 2026446 PMAQI
10th Sep 2026477 PMAQI
10th Sep 2026368 PMAQI
10th Sep 2026279 PMAQI
10th Sep 20262710 PMAQI
10th Sep 20262911 PMAQI
11th Sep 20262912 AMAQI
11th Sep 2026331 AMAQI
11th Sep 2026332 AMAQI
11th Sep 2026293 AMAQI
11th Sep 2026294 AMAQI
11th Sep 2026255 AMAQI
11th Sep 2026276 AMAQI

16°C12/20°C

11th Sep 2026257 AMAQI
11th Sep 2026258 AMAQI
11th Sep 2026259 AMAQI
11th Sep 20263310 AMAQI
11th Sep 20262511 AMAQI
11th Sep 20262012 PMAQI
11th Sep 2026251 PMAQI
11th Sep 2026322 PMAQI
11th Sep 2026233 PMAQI
11th Sep 2026274 PMAQI
11th Sep 2026275 PMAQI
11th Sep 2026296 PMAQI
11th Sep 2026427 PMAQI
11th Sep 2026268 PMAQI
11th Sep 2026109 PMAQI
11th Sep 20261010 PMAQI
11th Sep 20263111 PMAQI
12th Sep 20262912 AMAQI
12th Sep 2026251 AMAQI
12th Sep 2026272 AMAQI
12th Sep 2026253 AMAQI
12th Sep 2026254 AMAQI
12th Sep 2026335 AMAQI
12th Sep 2026296 AMAQI

17°C13/22°C

12th Sep 2026337 AMAQI
12th Sep 2026368 AMAQI
12th Sep 2026389 AMAQI
12th Sep 20264010 AMAQI
12th Sep 20264611 AMAQI
12th Sep 20264012 PMAQI
12th Sep 2026341 PMAQI
12th Sep 2026342 PMAQI
12th Sep 2026363 PMAQI
12th Sep 2026254 PMAQI
12th Sep 2026365 PMAQI
12th Sep 2026326 PMAQI
12th Sep 2026177 PMAQI
12th Sep 2026288 PMAQI
12th Sep 2026459 PMAQI
12th Sep 20262711 PMAQI
13th Sep 20262512 AMAQI
13th Sep 2026251 AMAQI
13th Sep 2026252 AMAQI
13th Sep 2026253 AMAQI
13th Sep 2026234 AMAQI
13th Sep 2026235 AMAQI
13th Sep 2026256 AMAQI

18°C14/24°C

13th Sep 2026257 AMAQI
13th Sep 2026238 AMAQI
13th Sep 2026259 AMAQI
13th Sep 20262310 AMAQI
13th Sep 20262711 AMAQI
13th Sep 20262312 PMAQI
13th Sep 2026361 PMAQI
13th Sep 2026382 PMAQI
13th Sep 2026183 PMAQI
13th Sep 2026104 PMAQI
13th Sep 202685 PMAQI
13th Sep 2026186 PMAQI
13th Sep 2026297 PMAQI
13th Sep 2026278 PMAQI
13th Sep 2026259 PMAQI
13th Sep 20262510 PMAQI
13th Sep 20262311 PMAQI
14th Sep 20262512 AMAQI
14th Sep 2026271 AMAQI
14th Sep 2026312 AMAQI
14th Sep 2026363 AMAQI
14th Sep 2026294 AMAQI
14th Sep 2026365 AMAQI
14th Sep 2026446 AMAQI

18°C17/21°C

14th Sep 2026407 AMAQI
14th Sep 2026468 AMAQI
14th Sep 2026519 AMAQI
14th Sep 20265310 AMAQI
14th Sep 20265311 AMAQI
14th Sep 20264412 PMAQI
14th Sep 2026421 PMAQI
14th Sep 2026502 PMAQI
14th Sep 2026503 PMAQI
14th Sep 2026404 PMAQI
14th Sep 2026425 PMAQI
14th Sep 2026366 PMAQI
14th Sep 2026257 PMAQI
14th Sep 2026258 PMAQI
14th Sep 2026219 PMAQI
14th Sep 20263210 PMAQI
14th Sep 20264411 PMAQI
15th Sep 20262912 AMAQI
15th Sep 2026271 AMAQI
15th Sep 2026382 AMAQI
15th Sep 2026313 AMAQI
15th Sep 2026334 AMAQI
15th Sep 2026235 AMAQI
15th Sep 2026466 AMAQI

19°C16/23°C

15th Sep 2026367 AMAQI
15th Sep 2026338 AMAQI
15th Sep 2026449 AMAQI
15th Sep 20262310 AMAQI
15th Sep 20263211 AMAQI
15th Sep 20263112 PMAQI
15th Sep 2026291 PMAQI
15th Sep 2026262 PMAQI
15th Sep 2026213 PMAQI
15th Sep 2026294 PMAQI
15th Sep 2026215 PMAQI
15th Sep 2026276 PMAQI
15th Sep 2026257 PMAQI
15th Sep 2026238 PMAQI
15th Sep 2026259 PMAQI
15th Sep 20262310 PMAQI
15th Sep 20262311 PMAQI
16th Sep 20262312 AMAQI
16th Sep 2026211 AMAQI
16th Sep 2026162 AMAQI
16th Sep 2026213 AMAQI
16th Sep 2026214 AMAQI
16th Sep 2026235 AMAQI
16th Sep 2026316 AMAQI

20°C16/26°C

16th Sep 2026337 AMAQI
16th Sep 2026278 AMAQI
16th Sep 2026239 AMAQI
16th Sep 20262510 AMAQI
16th Sep 20262311 AMAQI
16th Sep 20262312 PMAQI
16th Sep 2026181 PMAQI
16th Sep 2026122 PMAQI
16th Sep 2026143 PMAQI
16th Sep 2026204 PMAQI
16th Sep 2026185 PMAQI
16th Sep 2026216 PMAQI
16th Sep 2026207 PMAQI
16th Sep 2026128 PMAQI
16th Sep 202689 PMAQI
16th Sep 20261210 PMAQI
16th Sep 20261711 PMAQI
17th Sep 20262512 AMAQI
17th Sep 2026161 AMAQI
17th Sep 202692 AMAQI
17th Sep 2026293 AMAQI
17th Sep 2026124 AMAQI
17th Sep 2026105 AMAQI
17th Sep 2026386 AMAQI

16°C13/19°C

17th Sep 2026407 AMAQI
17th Sep 2026448 AMAQI
17th Sep 2026259 AMAQI
17th Sep 20262510 AMAQI
17th Sep 20262511 AMAQI
17th Sep 20262512 PMAQI
17th Sep 2026291 PMAQI
17th Sep 2026292 PMAQI
17th Sep 2026293 PMAQI
17th Sep 2026314 PMAQI
17th Sep 2026425 PMAQI
17th Sep 2026286 PMAQI
17th Sep 2026477 PMAQI
17th Sep 2026278 PMAQI
17th Sep 2026129 PMAQI
17th Sep 20261610 PMAQI
17th Sep 20261611 PMAQI
18th Sep 20261212 AMAQI
18th Sep 2026121 AMAQI
18th Sep 2026362 AMAQI
18th Sep 2026363 AMAQI
18th Sep 2026254 AMAQI
18th Sep 2026275 AMAQI
18th Sep 2026236 AMAQI

15°C13/20°C

18th Sep 2026217 AMAQI
18th Sep 2026218 AMAQI
18th Sep 2026219 AMAQI
18th Sep 20262110 AMAQI
18th Sep 20265911 AMAQI
18th Sep 20264712 PMAQI
18th Sep 2026361 PMAQI
18th Sep 2026382 PMAQI
18th Sep 2026383 PMAQI
18th Sep 2026314 PMAQI
18th Sep 2026235 PMAQI
18th Sep 2026236 PMAQI
18th Sep 2026217 PMAQI
18th Sep 2026218 PMAQI
18th Sep 2026239 PMAQI
18th Sep 20263310 PMAQI
18th Sep 20263111 PMAQI
19th Sep 20263612 AMAQI
19th Sep 2026231 AMAQI
19th Sep 2026212 AMAQI
19th Sep 2026253 AMAQI
19th Sep 2026214 AMAQI
19th Sep 2026335 AMAQI
19th Sep 2026366 AMAQI

15°C10/20°C

19th Sep 2026467 AMAQI
19th Sep 2026468 AMAQI
19th Sep 2026429 AMAQI
19th Sep 20263310 AMAQI
19th Sep 20263411 AMAQI
19th Sep 20263612 PMAQI
19th Sep 2026361 PMAQI
19th Sep 2026332 PMAQI
19th Sep 2026233 PMAQI
19th Sep 2026234 PMAQI
19th Sep 2026235 PMAQI
19th Sep 2026216 PMAQI
19th Sep 2026277 PMAQI
19th Sep 2026348 PMAQI
19th Sep 2026339 PMAQI
19th Sep 20263310 PMAQI
19th Sep 20263411 PMAQI
20th Sep 20262512 AMAQI
20th Sep 2026251 AMAQI
20th Sep 2026272 AMAQI
20th Sep 2026233 AMAQI
20th Sep 2026214 AMAQI
20th Sep 2026125 AMAQI
20th Sep 2026126 AMAQI

18°C15/22°C

20th Sep 2026127 AMAQI
20th Sep 2026428 AMAQI
20th Sep 2026369 AMAQI
20th Sep 20263110 AMAQI
20th Sep 20262311 AMAQI
20th Sep 20262312 PMAQI
20th Sep 2026251 PMAQI
20th Sep 2026232 PMAQI
20th Sep 2026213 PMAQI
20th Sep 2026254 PMAQI
20th Sep 2026385 PMAQI
20th Sep 2026406 PMAQI
20th Sep 2026367 PMAQI
20th Sep 2026388 PMAQI
20th Sep 2026189 PMAQI
20th Sep 20262510 PMAQI
20th Sep 20262711 PMAQI
21st Sep 20262712 AMAQI
21st Sep 2026231 AMAQI
21st Sep 2026252 AMAQI
21st Sep 2026233 AMAQI
21st Sep 2026234 AMAQI
21st Sep 2026275 AMAQI
21st Sep 2026276 AMAQI

17°C14/19°C

21st Sep 2026317 AMAQI
21st Sep 2026298 AMAQI
21st Sep 2026369 AMAQI
21st Sep 20263610 AMAQI
21st Sep 20264211 AMAQI
21st Sep 20264012 PMAQI
21st Sep 2026381 PMAQI
21st Sep 2026382 PMAQI
21st Sep 2026213 PMAQI
21st Sep 2026404 PMAQI
21st Sep 2026295 PMAQI
21st Sep 2026296 PMAQI
21st Sep 2026237 PMAQI
21st Sep 2026298 PMAQI
21st Sep 2026259 PMAQI
21st Sep 20262710 PMAQI
21st Sep 20264011 PMAQI
22nd Sep 20262712 AMAQI
22nd Sep 2026211 AMAQI
22nd Sep 2026212 AMAQI
22nd Sep 2026213 AMAQI
22nd Sep 2026214 AMAQI
22nd Sep 2026275 AMAQI
22nd Sep 2026216 AMAQI

15°C11/20°C

22nd Sep 2026297 AMAQI
22nd Sep 2026318 AMAQI
22nd Sep 2026319 AMAQI
22nd Sep 20264010 AMAQI
22nd Sep 20264611 AMAQI
22nd Sep 20264212 PMAQI
22nd Sep 2026481 PMAQI
22nd Sep 2026422 PMAQI
22nd Sep 2026423 PMAQI
22nd Sep 2026424 PMAQI
22nd Sep 2026445 PMAQI
22nd Sep 2026426 PMAQI
22nd Sep 2026367 PMAQI
22nd Sep 2026258 PMAQI
22nd Sep 2026259 PMAQI
22nd Sep 20262310 PMAQI
22nd Sep 20263111 PMAQI
23rd Sep 20262312 AMAQI
23rd Sep 2026381 AMAQI
23rd Sep 2026382 AMAQI
23rd Sep 2026363 AMAQI
23rd Sep 2026334 AMAQI
23rd Sep 2026365 AMAQI
23rd Sep 2026346 AMAQI

17°C14/21°C

23rd Sep 2026257 AMAQI
23rd Sep 2026218 AMAQI
23rd Sep 2026259 AMAQI
23rd Sep 20262710 AMAQI
23rd Sep 20264211 AMAQI
23rd Sep 20264212 PMAQI
23rd Sep 2026441 PMAQI
23rd Sep 2026422 PMAQI
23rd Sep 2026403 PMAQI
23rd Sep 2026254 PMAQI
23rd Sep 2026365 PMAQI
23rd Sep 2026406 PMAQI
23rd Sep 2026427 PMAQI
23rd Sep 2026368 PMAQI
23rd Sep 2026409 PMAQI
23rd Sep 20264810 PMAQI
23rd Sep 20264611 PMAQI
24th Sep 20264212 AMAQI
24th Sep 2026401 AMAQI
24th Sep 2026342 AMAQI
24th Sep 2026383 AMAQI
24th Sep 2026314 AMAQI
24th Sep 2026255 AMAQI
24th Sep 2026216 AMAQI

17°C13/23°C

24th Sep 2026407 AMAQI
24th Sep 2026218 AMAQI
24th Sep 2026239 AMAQI
24th Sep 20263110 AMAQI
24th Sep 20263111 AMAQI
24th Sep 20263612 PMAQI
24th Sep 2026191 PMAQI
24th Sep 2026212 PMAQI
24th Sep 2026253 PMAQI
24th Sep 2026234 PMAQI
24th Sep 2026275 PMAQI
24th Sep 2026216 PMAQI
24th Sep 2026217 PMAQI
24th Sep 2026218 PMAQI
24th Sep 2026259 PMAQI
24th Sep 20262910 PMAQI
24th Sep 20262111 PMAQI
25th Sep 20262312 AMAQI
25th Sep 2026251 AMAQI
25th Sep 2026252 AMAQI
25th Sep 2026253 AMAQI
25th Sep 2026234 AMAQI
25th Sep 2026235 AMAQI
25th Sep 2026296 AMAQI

15°C13/19°C

25th Sep 2026217 AMAQI
25th Sep 2026318 AMAQI
25th Sep 2026319 AMAQI
25th Sep 20263310 AMAQI
25th Sep 20263311 AMAQI
25th Sep 20263612 PMAQI
25th Sep 2026421 PMAQI
25th Sep 2026362 PMAQI
25th Sep 2026333 PMAQI
25th Sep 2026234 PMAQI
25th Sep 2026215 PMAQI
25th Sep 2026276 PMAQI
25th Sep 2026217 PMAQI
25th Sep 2026238 PMAQI
25th Sep 2026239 PMAQI
25th Sep 20262510 PMAQI
25th Sep 20263611 PMAQI
26th Sep 20263612 AMAQI
26th Sep 2026361 AMAQI
26th Sep 2026312 AMAQI
26th Sep 2026333 AMAQI
26th Sep 2026314 AMAQI
26th Sep 2026315 AMAQI
26th Sep 2026486 AMAQI

18°C12/24°C

26th Sep 2026317 AMAQI
26th Sep 2026468 AMAQI
26th Sep 2026489 AMAQI
26th Sep 20265110 AMAQI
26th Sep 20265611 AMAQI
26th Sep 20264812 PMAQI
26th Sep 2026441 PMAQI
26th Sep 2026362 PMAQI
26th Sep 2026333 PMAQI
26th Sep 2026274 PMAQI
26th Sep 2026235 PMAQI
26th Sep 2026216 PMAQI
26th Sep 2026217 PMAQI
26th Sep 2026238 PMAQI
26th Sep 2026389 PMAQI
26th Sep 20262110 PMAQI
26th Sep 20261811 PMAQI
27th Sep 20262512 AMAQI
27th Sep 2026271 AMAQI
27th Sep 2026212 AMAQI
27th Sep 2026253 AMAQI
27th Sep 2026254 AMAQI
27th Sep 2026315 AMAQI
27th Sep 2026276 AMAQI

18°C14/22°C

27th Sep 2026257 AMAQI
27th Sep 2026298 AMAQI
27th Sep 2026259 AMAQI
27th Sep 20263110 AMAQI
27th Sep 20263611 AMAQI
27th Sep 20264412 PMAQI
27th Sep 2026501 PMAQI
27th Sep 2026542 PMAQI
27th Sep 2026653 PMAQI
27th Sep 2026714 PMAQI
27th Sep 2026635 PMAQI
27th Sep 2026526 PMAQI
27th Sep 2026427 PMAQI
27th Sep 2026388 PMAQI
27th Sep 2026319 PMAQI
27th Sep 20263110 PMAQI
27th Sep 20263611 PMAQI
28th Sep 20263412 AMAQI
28th Sep 2026361 AMAQI
28th Sep 2026402 AMAQI
28th Sep 2026403 AMAQI
28th Sep 2026384 AMAQI
28th Sep 2026425 AMAQI
28th Sep 2026426 AMAQI

18°C14/24°C

28th Sep 2026407 AMAQI
7 AM
28th Sep 2026468 AMAQI
28th Sep 2026429 AMAQI
28th Sep 20264210 AMAQI
28th Sep 20264411 AMAQI
28th Sep 20264212 PMAQI
28th Sep 2026381 PMAQI
1 PM
28th Sep 2026442 PMAQI
28th Sep 2026443 PMAQI
28th Sep 2026504 PMAQI
28th Sep 2026485 PMAQI
28th Sep 2026386 PMAQI
28th Sep 2026277 PMAQI
28th Sep 2026318 PMAQI
8 PM
28th Sep 2026319 PMAQI
28th Sep 20263110 PMAQI
28th Sep 20264011 PMAQI
1 AM
6 AM

18°C15/20°C

Day time
Avg. Highest Time
11 AM

31AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
8 PM

25AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 11 AM to 11 AM (Avg. 31), while the lowest AQI was between 8 PM to 8 PM (Avg. 25).
Night time
Avg. Highest Time
3 AM

26AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
4 AM

23AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 3 AM to 3 AM (Avg. 26), while the lowest AQI was between 4 AM to 4 AM (Avg. 23).

2026 Days Vs Air Quality

Sint Niklaas, Flanders, Belgium

2026

91%

244

8%

22

0.7%

2

Total number of days with different AQI categories in last 271 days in 2026 (94 days remaining)

Good
244 Days
Moderate
22 Days
Poor
2 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 91%

Health Risk Level:

Very Low

In 2026, 91% of 271 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

Sint Niklaas, Flanders, Belgium

AQI levels in 2026

AQI (US)
PM₂.₅
PM₁₀
CO
SO₂
NO₂
O₃
Sun.Mon.Tue.Wed.Thu.Fri.Sat.

Jan.

Feb.

Mar.

Apr.

May

Jun.

Jul.

Aug.

Sep.

Oct.

Nov.

Dec.

-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
1st January 2026
29AQI (US)
2nd January 2026
20AQI (US)
3rd January 2026
21AQI (US)
4th January 2026
22AQI (US)
5th January 2026
45AQI (US)
6th January 2026
32AQI (US)
7th January 2026
41AQI (US)
8th January 2026
41AQI (US)
9th January 2026
19AQI (US)
10th January 2026
52AQI (US)
11th January 2026
60AQI (US)
12th January 2026
22AQI (US)
13th January 2026
20AQI (US)
14th January 2026
30AQI (US)
15th January 2026
30AQI (US)
16th January 2026
16AQI (US)
17th January 2026
30AQI (US)
18th January 2026
53AQI (US)
19th January 2026
66AQI (US)
20th January 2026
63AQI (US)
21st January 2026
30AQI (US)
22nd January 2026
45AQI (US)
23rd January 2026
47AQI (US)
24th January 2026
47AQI (US)
25th January 2026
84AQI (US)
26th January 2026
125AQI (US)
27th January 2026
63AQI (US)
28th January 2026
48AQI (US)
29th January 2026
71AQI (US)
30th January 2026
44AQI (US)
31st January 2026
18AQI (US)
1st February 2026
39AQI (US)
2nd February 2026
48AQI (US)
3rd February 2026
63AQI (US)
4th February 2026
15AQI (US)
5th February 2026
55AQI (US)
6th February 2026
40AQI (US)
7th February 2026
18AQI (US)
8th February 2026
39AQI (US)
9th February 2026
47AQI (US)
10th February 2026
35AQI (US)
11th February 2026
21AQI (US)
12th February 2026
22AQI (US)
13th February 2026
44AQI (US)
14th February 2026
44AQI (US)
15th February 2026
40AQI (US)
16th February 2026
20AQI (US)
17th February 2026
39AQI (US)
18th February 2026
39AQI (US)
19th February 2026
36AQI (US)
20th February 2026
40AQI (US)
21st February 2026
33AQI (US)
22nd February 2026
31AQI (US)
23rd February 2026
33AQI (US)
24th February 2026
36AQI (US)
25th February 2026
34AQI (US)
26th February 2026
33AQI (US)
27th February 2026
32AQI (US)
28th February 2026
19AQI (US)
1st March 2026
27AQI (US)
2nd March 2026
36AQI (US)
3rd March 2026
54AQI (US)
4th March 2026
72AQI (US)
5th March 2026
53AQI (US)
6th March 2026
55AQI (US)
7th March 2026
93AQI (US)
8th March 2026
109AQI (US)
9th March 2026
64AQI (US)
10th March 2026
53AQI (US)
11th March 2026
25AQI (US)
12th March 2026
34AQI (US)
13th March 2026
29AQI (US)
14th March 2026
28AQI (US)
15th March 2026
29AQI (US)
16th March 2026
29AQI (US)
17th March 2026
30AQI (US)
18th March 2026
30AQI (US)
19th March 2026
52AQI (US)
20th March 2026
67AQI (US)
21st March 2026
32AQI (US)
22nd March 2026
61AQI (US)
23rd March 2026
71AQI (US)
24th March 2026
82AQI (US)
25th March 2026
21AQI (US)
26th March 2026
9AQI (US)
27th March 2026
24AQI (US)
28th March 2026
29AQI (US)
29th March 2026
26AQI (US)
30th March 2026
25AQI (US)
31st March 2026
24AQI (US)
1st April 2026
29AQI (US)
2nd April 2026
28AQI (US)
3rd April 2026
20AQI (US)
4th April 2026
27AQI (US)
5th April 2026
28AQI (US)
6th April 2026
25AQI (US)
7th April 2026
25AQI (US)
8th April 2026
27AQI (US)
9th April 2026
33AQI (US)
10th April 2026
22AQI (US)
11th April 2026
28AQI (US)
12th April 2026
29AQI (US)
13th April 2026
29AQI (US)
14th April 2026
31AQI (US)
15th April 2026
31AQI (US)
16th April 2026
26AQI (US)
17th April 2026
18th April 2026
30AQI (US)
19th April 2026
27AQI (US)
20th April 2026
25AQI (US)
21st April 2026
27AQI (US)
22nd April 2026
23rd April 2026
25AQI (US)
24th April 2026
30AQI (US)
25th April 2026
42AQI (US)
26th April 2026
24AQI (US)
27th April 2026
26AQI (US)
28th April 2026
27AQI (US)
29th April 2026
25AQI (US)
30th April 2026
25AQI (US)
1st May 2026
25AQI (US)
2nd May 2026
31AQI (US)
3rd May 2026
19AQI (US)
4th May 2026
49AQI (US)
5th May 2026
36AQI (US)
6th May 2026
21AQI (US)
7th May 2026
24AQI (US)
8th May 2026
27AQI (US)
9th May 2026
10th May 2026
29AQI (US)
11th May 2026
22AQI (US)
12th May 2026
23AQI (US)
13th May 2026
24AQI (US)
14th May 2026
18AQI (US)
15th May 2026
28AQI (US)
16th May 2026
34AQI (US)
17th May 2026
36AQI (US)
18th May 2026
34AQI (US)
19th May 2026
31AQI (US)
20th May 2026
31AQI (US)
21st May 2026
30AQI (US)
22nd May 2026
34AQI (US)
23rd May 2026
36AQI (US)
24th May 2026
49AQI (US)
25th May 2026
37AQI (US)
26th May 2026
26AQI (US)
27th May 2026
28AQI (US)
28th May 2026
27AQI (US)
29th May 2026
39AQI (US)
30th May 2026
48AQI (US)
31st May 2026
34AQI (US)
1st June 2026
20AQI (US)
2nd June 2026
21AQI (US)
3rd June 2026
22AQI (US)
4th June 2026
18AQI (US)
5th June 2026
21AQI (US)
6th June 2026
22AQI (US)
7th June 2026
22AQI (US)
8th June 2026
22AQI (US)
9th June 2026
20AQI (US)
10th June 2026
23AQI (US)
11th June 2026
21AQI (US)
12th June 2026
19AQI (US)
13th June 2026
22AQI (US)
14th June 2026
19AQI (US)
15th June 2026
20AQI (US)
16th June 2026
25AQI (US)
17th June 2026
18AQI (US)
18th June 2026
14AQI (US)
19th June 2026
20AQI (US)
20th June 2026
22AQI (US)
21st June 2026
19AQI (US)
22nd June 2026
21AQI (US)
23rd June 2026
24AQI (US)
24th June 2026
24AQI (US)
25th June 2026
42AQI (US)
26th June 2026
45AQI (US)
27th June 2026
29AQI (US)
28th June 2026
24AQI (US)
29th June 2026
19AQI (US)
30th June 2026
19AQI (US)
1st July 2026
21AQI (US)
2nd July 2026
20AQI (US)
3rd July 2026
22AQI (US)
4th July 2026
16AQI (US)
5th July 2026
13AQI (US)
6th July 2026
17AQI (US)
7th July 2026
15AQI (US)
8th July 2026
20AQI (US)
9th July 2026
24AQI (US)
10th July 2026
28AQI (US)
11th July 2026
28AQI (US)
12th July 2026
26AQI (US)
13th July 2026
28AQI (US)
14th July 2026
28AQI (US)
15th July 2026
23AQI (US)
16th July 2026
22AQI (US)
17th July 2026
35AQI (US)
18th July 2026
40AQI (US)
19th July 2026
27AQI (US)
20th July 2026
26AQI (US)
21st July 2026
25AQI (US)
22nd July 2026
20AQI (US)
23rd July 2026
18AQI (US)
24th July 2026
30AQI (US)
25th July 2026
45AQI (US)
26th July 2026
24AQI (US)
27th July 2026
19AQI (US)
28th July 2026
26AQI (US)
29th July 2026
31AQI (US)
30th July 2026
37AQI (US)
31st July 2026
42AQI (US)
1st August 2026
12AQI (US)
2nd August 2026
23AQI (US)
3rd August 2026
26AQI (US)
4th August 2026
37AQI (US)
5th August 2026
25AQI (US)
6th August 2026
22AQI (US)
7th August 2026
34AQI (US)
8th August 2026
28AQI (US)
9th August 2026
34AQI (US)
10th August 2026
29AQI (US)
11th August 2026
28AQI (US)
12th August 2026
29AQI (US)
13th August 2026
32AQI (US)
14th August 2026
35AQI (US)
15th August 2026
39AQI (US)
16th August 2026
13AQI (US)
17th August 2026
26AQI (US)
18th August 2026
26AQI (US)
19th August 2026
31AQI (US)
20th August 2026
25AQI (US)
21st August 2026
16AQI (US)
22nd August 2026
14AQI (US)
23rd August 2026
28AQI (US)
24th August 2026
30AQI (US)
25th August 2026
25AQI (US)
26th August 2026
32AQI (US)
27th August 2026
38AQI (US)
28th August 2026
39AQI (US)
29th August 2026
14AQI (US)
30th August 2026
22AQI (US)
31st August 2026
18AQI (US)
1st September 2026
22AQI (US)
2nd September 2026
21AQI (US)
3rd September 2026
21AQI (US)
4th September 2026
11AQI (US)
5th September 2026
19AQI (US)
6th September 2026
27AQI (US)
7th September 2026
27AQI (US)
8th September 2026
17AQI (US)
9th September 2026
19AQI (US)
10th September 2026
29AQI (US)
11th September 2026
27AQI (US)
12th September 2026
32AQI (US)
13th September 2026
24AQI (US)
14th September 2026
38AQI (US)
15th September 2026
29AQI (US)
16th September 2026
20AQI (US)
17th September 2026
26AQI (US)
18th September 2026
28AQI (US)
19th September 2026
31AQI (US)
20th September 2026
26AQI (US)
21st September 2026
30AQI (US)
22nd September 2026
32AQI (US)
23rd September 2026
36AQI (US)
24th September 2026
28AQI (US)
25th September 2026
28AQI (US)
26th September 2026
35AQI (US)
27th September 2026
38AQI (US)
28th September 2026
40AQI (US)
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026

43AQI (US)

36AQI (US)

44AQI (US)

28AQI (US)

31AQI (US)

23AQI (US)

26AQI (US)

27AQI (US)

27AQI (US)

No. of days

Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days

202632AQI (US)

22
8
1
26
2
18
12
1
28
30
30
31
31
28
244
22
2

Highest AQI (US) recorded in

March

44AQI (US)

Lowest AQI (US) recorded in

June

23AQI (US)

202541AQI (US)

15
15
1
7
17
4
14
13
4
19
11
30
1
28
2
31
29
2
30
19
12
26
4
19
12
267
89
9

Highest AQI (US) recorded in

February

70AQI (US)

Lowest AQI (US) recorded in

September

22AQI (US)

202438AQI (US)

18
13
26
3
21
10
30
20
11
24
6
29
2
28
3
22
8
28
3
17
13
23
8
286
80

Highest AQI (US) recorded in

January

46AQI (US)

Lowest AQI (US) recorded in

April

23AQI (US)

202337AQI (US)

3
23
8
20
10
22
9
19
11
30
1
29
2
24
5
1
27
4
27
2
21
10
245
62
1

Highest AQI (US) recorded in

May

47AQI (US)

Lowest AQI (US) recorded in

August

26AQI (US)

202244AQI (US)

15
12
3
19
2
7
20
4
18
12
19
12
28
2
23
1
1
27
1
23
6
4
184
68
7

Highest AQI (US) recorded in

March

73AQI (US)

Lowest AQI (US) recorded in

November

25AQI (US)

202150AQI (US)

14
15
7
20
14
13
3
1
15
12
3
26
5
12
18
19
12
25
6
14
16
22
9
16
14
16
15
200
155
6
1

Highest AQI (US) recorded in

March

65AQI (US)

Lowest AQI (US) recorded in

August

37AQI (US)

202044AQI (US)

7
4
2
6
14
1
17
1
23
7
29
2
20
9
2
21
7
2
27
4
14
12
4
22
7
1
186
67
12

Highest AQI (US) recorded in

November

60AQI (US)

Lowest AQI (US) recorded in

July

28AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2021(Avg.)
50AQI (US)
Least Polluted Year Recorded
2026(Avg.)
32AQI (US)

Sint Niklaas's annual 2026 AQI (US) (32) shows an average percentage change of -23.6% (improved AQI (US)) compared to previous years: 2020 (44), 2021 (50), 2022 (44), 2023 (37), 2024 (38), 2025 (41).