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+
November Air Quality Analysis
Sint Niklaas, Flanders, Belgium
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
24th Nov 2021
100AQILowest AQI recorded on
5th Nov 2021
12AQISame Day Analysis (20th November ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 18 of Good air quality, showing improvement over 2024, 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 20th Nov - 21st Nov 2025
Sint Niklaas, Flanders, Belgium
AQI
Day
Night
.
7 AM20th Nov 2025
5 PM
6 AM21st Nov 2025
Day time
Avg. Highest Time
12PM20th Nov
28AQI
Avg. Lowest Time
8AM20th Nov
11AQI
Night time
Avg. Highest Time
6AM21st Nov
44AQI
Avg. Lowest Time
7AM20th Nov
11AQI
In the last 24 hours,
Sint Niklaas's AQI reached its highest point of 44 at 6 AM during the Night, while the lowest point, 11, was recorded at 8 AM during the Day between 20th Nov and 21st Nov 2025.
Day & Night AQI Trend : Oct - Nov 2025
Sint Niklaas, Flanders, Belgium
OctNov
22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st
Day
Night
22nd Oct 2025227 AMAQI
22nd Oct 2025268 AMAQI
22nd Oct 2025289 AMAQI
22nd Oct 20253210 AMAQI
22nd Oct 20253511 AMAQI
22nd Oct 20254912 PMAQI
22nd Oct 2025661 PMAQI
22nd Oct 2025442 PMAQI
22nd Oct 2025303 PMAQI
22nd Oct 2025324 PMAQI
22nd Oct 2025315 PMAQI
22nd Oct 2025256 PMAQI
22nd Oct 2025267 PMAQI
22nd Oct 2025288 PMAQI
22nd Oct 2025399 PMAQI
22nd Oct 20254310 PMAQI
22nd Oct 20254511 PMAQI
23rd Oct 20254212 AMAQI
23rd Oct 2025411 AMAQI
23rd Oct 2025352 AMAQI
23rd Oct 2025283 AMAQI
23rd Oct 2025224 AMAQI
23rd Oct 2025205 AMAQI
23rd Oct 2025166 AMAQI
13°C9/16°C
23rd Oct 2025117 AMAQI
23rd Oct 2025128 AMAQI
23rd Oct 2025169 AMAQI
23rd Oct 20251710 AMAQI
23rd Oct 20251711 AMAQI
23rd Oct 20251712 PMAQI
23rd Oct 2025171 PMAQI
23rd Oct 2025172 PMAQI
23rd Oct 2025173 PMAQI
23rd Oct 2025174 PMAQI
23rd Oct 2025115 PMAQI
23rd Oct 2025286 PMAQI
23rd Oct 2025327 PMAQI
23rd Oct 2025318 PMAQI
23rd Oct 2025319 PMAQI
23rd Oct 20252310 PMAQI
23rd Oct 20252211 PMAQI
24th Oct 20252212 AMAQI
24th Oct 2025221 AMAQI
24th Oct 2025252 AMAQI
24th Oct 2025283 AMAQI
24th Oct 2025234 AMAQI
24th Oct 2025245 AMAQI
24th Oct 2025286 AMAQI
12°C10/15°C
24th Oct 2025287 AMAQI
24th Oct 2025288 AMAQI
24th Oct 2025289 AMAQI
24th Oct 20252610 AMAQI
24th Oct 20252011 AMAQI
24th Oct 20251812 PMAQI
24th Oct 2025221 PMAQI
24th Oct 2025222 PMAQI
24th Oct 2025223 PMAQI
24th Oct 2025224 PMAQI
24th Oct 2025225 PMAQI
24th Oct 2025206 PMAQI
24th Oct 2025177 PMAQI
24th Oct 2025178 PMAQI
24th Oct 2025129 PMAQI
24th Oct 20251410 PMAQI
24th Oct 20251711 PMAQI
25th Oct 20251512 AMAQI
25th Oct 2025111 AMAQI
25th Oct 2025112 AMAQI
25th Oct 2025113 AMAQI
25th Oct 2025114 AMAQI
25th Oct 2025165 AMAQI
25th Oct 2025176 AMAQI
10°C8/12°C
25th Oct 2025177 AMAQI
25th Oct 2025178 AMAQI
25th Oct 2025179 AMAQI
25th Oct 20251710 AMAQI
25th Oct 20251711 AMAQI
25th Oct 20252512 PMAQI
25th Oct 2025271 PMAQI
25th Oct 2025192 PMAQI
25th Oct 2025173 PMAQI
25th Oct 2025214 PMAQI
25th Oct 2025225 PMAQI
25th Oct 2025226 PMAQI
25th Oct 2025207 PMAQI
25th Oct 2025178 PMAQI
25th Oct 2025179 PMAQI
25th Oct 20251710 PMAQI
25th Oct 20251711 PMAQI
26th Oct 20251712 AMAQI
26th Oct 2025221 AMAQI
26th Oct 2025172 AMAQI
26th Oct 2025113 AMAQI
26th Oct 2025114 AMAQI
26th Oct 2025115 AMAQI
26th Oct 2025176 AMAQI
9°C7/11°C
26th Oct 2025177 AMAQI
26th Oct 2025178 AMAQI
26th Oct 2025189 AMAQI
26th Oct 20252810 AMAQI
26th Oct 20252711 AMAQI
26th Oct 20251812 PMAQI
26th Oct 2025221 PMAQI
26th Oct 2025222 PMAQI
26th Oct 2025223 PMAQI
26th Oct 2025184 PMAQI
26th Oct 2025175 PMAQI
26th Oct 2025176 PMAQI
26th Oct 2025177 PMAQI
26th Oct 2025178 PMAQI
26th Oct 2025179 PMAQI
26th Oct 20251710 PMAQI
26th Oct 20251811 PMAQI
27th Oct 20252212 AMAQI
27th Oct 2025171 AMAQI
27th Oct 2025172 AMAQI
27th Oct 2025173 AMAQI
27th Oct 2025164 AMAQI
27th Oct 2025115 AMAQI
27th Oct 2025286 AMAQI
8°C6/11°C
27th Oct 2025277 AMAQI
27th Oct 2025228 AMAQI
27th Oct 2025339 AMAQI
27th Oct 20253310 AMAQI
27th Oct 20253311 AMAQI
27th Oct 20253312 PMAQI
27th Oct 2025411 PMAQI
27th Oct 2025372 PMAQI
27th Oct 2025373 PMAQI
27th Oct 2025304 PMAQI
27th Oct 2025305 PMAQI
27th Oct 2025326 PMAQI
27th Oct 2025177 PMAQI
27th Oct 2025178 PMAQI
27th Oct 2025189 PMAQI
27th Oct 20252310 PMAQI
27th Oct 20252811 PMAQI
28th Oct 20253212 AMAQI
28th Oct 2025281 AMAQI
28th Oct 2025322 AMAQI
28th Oct 2025333 AMAQI
28th Oct 2025354 AMAQI
28th Oct 2025425 AMAQI
28th Oct 2025336 AMAQI
10°C8/12°C
28th Oct 2025327 AMAQI
28th Oct 2025308 AMAQI
28th Oct 2025289 AMAQI
28th Oct 20252210 AMAQI
28th Oct 20251711 AMAQI
28th Oct 20251712 PMAQI
28th Oct 2025171 PMAQI
28th Oct 2025172 PMAQI
28th Oct 2025173 PMAQI
28th Oct 2025224 PMAQI
28th Oct 2025225 PMAQI
28th Oct 2025226 PMAQI
28th Oct 2025227 PMAQI
28th Oct 2025228 PMAQI
28th Oct 2025289 PMAQI
28th Oct 20252810 PMAQI
28th Oct 20252811 PMAQI
29th Oct 20253412 AMAQI
29th Oct 2025441 AMAQI
29th Oct 2025462 AMAQI
29th Oct 2025463 AMAQI
29th Oct 2025404 AMAQI
29th Oct 2025325 AMAQI
29th Oct 2025226 AMAQI
11°C7/15°C
29th Oct 2025227 AMAQI
29th Oct 2025228 AMAQI
29th Oct 2025179 AMAQI
29th Oct 20252310 AMAQI
29th Oct 20253311 AMAQI
29th Oct 20253312 PMAQI
29th Oct 2025421 PMAQI
29th Oct 2025422 PMAQI
29th Oct 2025323 PMAQI
29th Oct 2025324 PMAQI
29th Oct 2025285 PMAQI
29th Oct 2025196 PMAQI
29th Oct 2025177 PMAQI
29th Oct 2025178 PMAQI
29th Oct 2025249 PMAQI
29th Oct 20253810 PMAQI
29th Oct 20253811 PMAQI
30th Oct 20253712 AMAQI
30th Oct 2025371 AMAQI
30th Oct 2025352 AMAQI
30th Oct 2025283 AMAQI
30th Oct 2025284 AMAQI
30th Oct 2025175 AMAQI
30th Oct 2025176 AMAQI
11°C9/14°C
30th Oct 2025177 AMAQI
30th Oct 2025258 AMAQI
30th Oct 2025329 AMAQI
30th Oct 20253210 AMAQI
30th Oct 20253311 AMAQI
30th Oct 20253312 PMAQI
30th Oct 2025341 PMAQI
30th Oct 2025362 PMAQI
30th Oct 2025323 PMAQI
30th Oct 2025324 PMAQI
30th Oct 2025285 PMAQI
30th Oct 2025306 PMAQI
30th Oct 2025327 PMAQI
30th Oct 2025328 PMAQI
30th Oct 2025329 PMAQI
30th Oct 20253310 PMAQI
30th Oct 20253811 PMAQI
31st Oct 20253912 AMAQI
31st Oct 2025421 AMAQI
31st Oct 2025422 AMAQI
31st Oct 2025383 AMAQI
31st Oct 2025364 AMAQI
31st Oct 2025375 AMAQI
31st Oct 2025326 AMAQI
10°C6/14°C
31st Oct 2025327 AMAQI
31st Oct 2025288 AMAQI
31st Oct 2025279 AMAQI
31st Oct 20251710 AMAQI
31st Oct 20251711 AMAQI
31st Oct 20251812 PMAQI
31st Oct 2025221 PMAQI
31st Oct 2025222 PMAQI
31st Oct 2025223 PMAQI
31st Oct 2025224 PMAQI
31st Oct 2025175 PMAQI
31st Oct 2025176 PMAQI
31st Oct 2025177 PMAQI
31st Oct 2025228 PMAQI
31st Oct 2025289 PMAQI
31st Oct 20252810 PMAQI
31st Oct 20252611 PMAQI
1st Nov 20252212 AMAQI
1st Nov 2025221 AMAQI
1st Nov 2025222 AMAQI
1st Nov 2025223 AMAQI
1st Nov 2025224 AMAQI
1st Nov 2025175 AMAQI
1st Nov 2025176 AMAQI
13°C11/14°C
1st Nov 2025177 AMAQI
1st Nov 2025178 AMAQI
1st Nov 2025179 AMAQI
1st Nov 20251710 AMAQI
1st Nov 20251711 AMAQI
1st Nov 20251712 PMAQI
1st Nov 2025171 PMAQI
1st Nov 2025172 PMAQI
1st Nov 2025163 PMAQI
1st Nov 2025114 PMAQI
1st Nov 2025115 PMAQI
1st Nov 2025116 PMAQI
1st Nov 2025167 PMAQI
1st Nov 2025178 PMAQI
1st Nov 2025179 PMAQI
1st Nov 20251710 PMAQI
1st Nov 20251711 PMAQI
2nd Nov 20251712 AMAQI
2nd Nov 2025171 AMAQI
2nd Nov 2025222 AMAQI
2nd Nov 2025223 AMAQI
2nd Nov 2025224 AMAQI
2nd Nov 2025235 AMAQI
2nd Nov 2025276 AMAQI
13°C11/15°C
2nd Nov 2025227 AMAQI
2nd Nov 2025228 AMAQI
2nd Nov 2025229 AMAQI
2nd Nov 20251710 AMAQI
2nd Nov 20252211 AMAQI
2nd Nov 20252212 PMAQI
2nd Nov 2025221 PMAQI
2nd Nov 2025222 PMAQI
2nd Nov 2025223 PMAQI
2nd Nov 2025224 PMAQI
2nd Nov 2025225 PMAQI
2nd Nov 2025226 PMAQI
2nd Nov 2025217 PMAQI
2nd Nov 2025118 PMAQI
2nd Nov 2025129 PMAQI
2nd Nov 20251710 PMAQI
2nd Nov 20253011 PMAQI
3rd Nov 20253212 AMAQI
3rd Nov 2025331 AMAQI
3rd Nov 2025362 AMAQI
3rd Nov 2025393 AMAQI
3rd Nov 2025374 AMAQI
3rd Nov 2025325 AMAQI
3rd Nov 2025326 AMAQI
10°C7/13°C
3rd Nov 2025317 AMAQI
3rd Nov 2025228 AMAQI
3rd Nov 2025279 AMAQI
3rd Nov 20252510 AMAQI
3rd Nov 20252811 AMAQI
3rd Nov 20252812 PMAQI
3rd Nov 2025281 PMAQI
3rd Nov 2025332 PMAQI
3rd Nov 2025333 PMAQI
3rd Nov 2025334 PMAQI
3rd Nov 2025395 PMAQI
3rd Nov 2025426 PMAQI
3rd Nov 2025447 PMAQI
3rd Nov 2025458 PMAQI
3rd Nov 2025429 PMAQI
3rd Nov 20253510 PMAQI
3rd Nov 20253411 PMAQI
4th Nov 20253312 AMAQI
4th Nov 2025321 AMAQI
4th Nov 2025292 AMAQI
4th Nov 2025283 AMAQI
4th Nov 2025284 AMAQI
4th Nov 2025285 AMAQI
4th Nov 2025286 AMAQI
10°C6/14°C
4th Nov 2025287 AMAQI
4th Nov 2025288 AMAQI
4th Nov 2025289 AMAQI
4th Nov 20252810 AMAQI
4th Nov 20253311 AMAQI
4th Nov 20253312 PMAQI
4th Nov 2025321 PMAQI
4th Nov 2025282 PMAQI
4th Nov 2025273 PMAQI
4th Nov 2025224 PMAQI
4th Nov 2025225 PMAQI
4th Nov 2025206 PMAQI
4th Nov 2025177 PMAQI
4th Nov 2025178 PMAQI
4th Nov 2025179 PMAQI
4th Nov 20251710 PMAQI
4th Nov 20251711 PMAQI
5th Nov 20251712 AMAQI
5th Nov 2025171 AMAQI
5th Nov 2025172 AMAQI
5th Nov 2025173 AMAQI
5th Nov 2025174 AMAQI
5th Nov 2025175 AMAQI
5th Nov 2025176 AMAQI
13°C12/15°C
5th Nov 2025177 AMAQI
5th Nov 2025178 AMAQI
5th Nov 2025179 AMAQI
5th Nov 20251710 AMAQI
5th Nov 20251911 AMAQI
5th Nov 20252312 PMAQI
5th Nov 2025281 PMAQI
5th Nov 2025282 PMAQI
5th Nov 2025283 PMAQI
5th Nov 2025284 PMAQI
5th Nov 2025285 PMAQI
5th Nov 2025266 PMAQI
5th Nov 2025227 PMAQI
5th Nov 2025228 PMAQI
5th Nov 2025229 PMAQI
5th Nov 20253510 PMAQI
5th Nov 20254911 PMAQI
6th Nov 20254212 AMAQI
6th Nov 2025441 AMAQI
6th Nov 2025482 AMAQI
6th Nov 2025403 AMAQI
6th Nov 2025354 AMAQI
6th Nov 2025345 AMAQI
6th Nov 2025356 AMAQI
14°C12/18°C
6th Nov 2025297 AMAQI
6th Nov 2025228 AMAQI
6th Nov 2025229 AMAQI
6th Nov 20252410 AMAQI
6th Nov 20253011 AMAQI
6th Nov 20254012 PMAQI
6th Nov 2025381 PMAQI
6th Nov 2025342 PMAQI
6th Nov 2025343 PMAQI
6th Nov 2025334 PMAQI
6th Nov 2025365 PMAQI
6th Nov 2025326 PMAQI
6th Nov 2025337 PMAQI
6th Nov 2025348 PMAQI
6th Nov 2025399 PMAQI
6th Nov 20253910 PMAQI
6th Nov 20254011 PMAQI
7th Nov 20255212 AMAQI
7th Nov 2025521 AMAQI
7th Nov 2025542 AMAQI
7th Nov 2025553 AMAQI
7th Nov 2025544 AMAQI
7th Nov 2025545 AMAQI
7th Nov 2025536 AMAQI
12°C10/15°C
7th Nov 2025547 AMAQI
7th Nov 2025508 AMAQI
7th Nov 2025489 AMAQI
7th Nov 20254910 AMAQI
7th Nov 20254911 AMAQI
7th Nov 20255212 PMAQI
7th Nov 2025501 PMAQI
7th Nov 2025502 PMAQI
7th Nov 2025453 PMAQI
7th Nov 2025454 PMAQI
7th Nov 2025305 PMAQI
7th Nov 2025306 PMAQI
7th Nov 2025287 PMAQI
7th Nov 2025288 PMAQI
7th Nov 2025309 PMAQI
7th Nov 20253510 PMAQI
7th Nov 20253811 PMAQI
8th Nov 20253712 AMAQI
8th Nov 2025391 AMAQI
8th Nov 2025402 AMAQI
8th Nov 2025423 AMAQI
8th Nov 2025484 AMAQI
8th Nov 2025525 AMAQI
8th Nov 2025516 AMAQI
13°C10/17°C
8th Nov 2025527 AMAQI
8th Nov 2025518 AMAQI
8th Nov 2025519 AMAQI
8th Nov 20255010 AMAQI
8th Nov 20255211 AMAQI
8th Nov 20255112 PMAQI
8th Nov 2025511 PMAQI
8th Nov 2025482 PMAQI
8th Nov 2025503 PMAQI
8th Nov 2025494 PMAQI
8th Nov 2025505 PMAQI
8th Nov 2025526 PMAQI
8th Nov 2025527 PMAQI
8th Nov 2025528 PMAQI
8th Nov 2025549 PMAQI
8th Nov 20255610 PMAQI
8th Nov 20255811 PMAQI
9th Nov 20255712 AMAQI
9th Nov 2025561 AMAQI
9th Nov 2025542 AMAQI
9th Nov 2025563 AMAQI
9th Nov 2025564 AMAQI
9th Nov 2025575 AMAQI
9th Nov 2025566 AMAQI
12°C9/15°C
9th Nov 2025557 AMAQI
9th Nov 2025558 AMAQI
9th Nov 2025559 AMAQI
9th Nov 20255610 AMAQI
9th Nov 20255711 AMAQI
9th Nov 20255912 PMAQI
9th Nov 2025591 PMAQI
9th Nov 2025582 PMAQI
9th Nov 2025573 PMAQI
9th Nov 2025564 PMAQI
9th Nov 2025495 PMAQI
9th Nov 2025496 PMAQI
9th Nov 2025547 PMAQI
9th Nov 2025558 PMAQI
9th Nov 2025559 PMAQI
9th Nov 20256010 PMAQI
9th Nov 20255811 PMAQI
10th Nov 20255412 AMAQI
10th Nov 2025511 AMAQI
10th Nov 2025442 AMAQI
10th Nov 2025443 AMAQI
10th Nov 2025504 AMAQI
10th Nov 2025515 AMAQI
10th Nov 2025496 AMAQI
10°C8/14°C
10th Nov 2025417 AMAQI
10th Nov 2025338 AMAQI
10th Nov 2025329 AMAQI
10th Nov 20252810 AMAQI
10th Nov 20252811 AMAQI
10th Nov 20253112 PMAQI
10th Nov 2025321 PMAQI
10th Nov 2025272 PMAQI
10th Nov 2025223 PMAQI
10th Nov 2025224 PMAQI
10th Nov 2025225 PMAQI
10th Nov 2025226 PMAQI
10th Nov 2025207 PMAQI
10th Nov 2025178 PMAQI
10th Nov 2025179 PMAQI
10th Nov 20252010 PMAQI
10th Nov 20252211 PMAQI
11th Nov 20252212 AMAQI
11th Nov 2025221 AMAQI
11th Nov 2025272 AMAQI
11th Nov 2025283 AMAQI
11th Nov 2025284 AMAQI
11th Nov 2025285 AMAQI
11th Nov 2025286 AMAQI
10°C8/12°C
11th Nov 2025327 AMAQI
11th Nov 2025458 AMAQI
11th Nov 2025469 AMAQI
11th Nov 20254610 AMAQI
11th Nov 20253811 AMAQI
11th Nov 20253312 PMAQI
11th Nov 2025331 PMAQI
11th Nov 2025382 PMAQI
11th Nov 2025353 PMAQI
11th Nov 2025344 PMAQI
11th Nov 2025305 PMAQI
11th Nov 2025226 PMAQI
11th Nov 2025227 PMAQI
11th Nov 2025198 PMAQI
11th Nov 2025309 PMAQI
11th Nov 20253210 PMAQI
11th Nov 20253311 PMAQI
12th Nov 20253312 AMAQI
12th Nov 2025311 AMAQI
12th Nov 2025302 AMAQI
12th Nov 2025263 AMAQI
12th Nov 2025174 AMAQI
12th Nov 2025175 AMAQI
12th Nov 2025176 AMAQI
10°C8/13°C
12th Nov 2025177 AMAQI
12th Nov 2025178 AMAQI
12th Nov 2025179 AMAQI
12th Nov 20251710 AMAQI
12th Nov 20252211 AMAQI
12th Nov 20252212 PMAQI
12th Nov 2025221 PMAQI
12th Nov 2025222 PMAQI
12th Nov 2025223 PMAQI
12th Nov 2025224 PMAQI
12th Nov 2025225 PMAQI
12th Nov 2025226 PMAQI
12th Nov 2025257 PMAQI
12th Nov 2025288 PMAQI
12th Nov 2025289 PMAQI
12th Nov 20253310 PMAQI
12th Nov 20254411 PMAQI
13th Nov 20254212 AMAQI
13th Nov 2025411 AMAQI
13th Nov 2025402 AMAQI
13th Nov 2025353 AMAQI
13th Nov 2025324 AMAQI
13th Nov 2025225 AMAQI
13th Nov 2025226 AMAQI
13°C10/15°C
13th Nov 2025227 AMAQI
13th Nov 2025178 AMAQI
13th Nov 2025189 AMAQI
13th Nov 20252210 AMAQI
13th Nov 20252211 AMAQI
13th Nov 20252212 PMAQI
13th Nov 2025281 PMAQI
13th Nov 2025282 PMAQI
13th Nov 2025283 PMAQI
13th Nov 2025284 PMAQI
13th Nov 2025285 PMAQI
13th Nov 2025326 PMAQI
13th Nov 2025287 PMAQI
13th Nov 2025428 PMAQI
13th Nov 2025489 PMAQI
13th Nov 20255110 PMAQI
13th Nov 20255111 PMAQI
14th Nov 20255012 AMAQI
14th Nov 2025501 AMAQI
14th Nov 2025532 AMAQI
14th Nov 2025543 AMAQI
14th Nov 2025544 AMAQI
14th Nov 2025535 AMAQI
14th Nov 2025516 AMAQI
14°C12/17°C
14th Nov 2025507 AMAQI
14th Nov 2025458 AMAQI
14th Nov 2025469 AMAQI
14th Nov 20254110 AMAQI
14th Nov 20253911 AMAQI
14th Nov 20253512 PMAQI
14th Nov 2025371 PMAQI
14th Nov 2025532 PMAQI
14th Nov 2025533 PMAQI
14th Nov 2025534 PMAQI
14th Nov 2025545 PMAQI
14th Nov 2025526 PMAQI
14th Nov 2025527 PMAQI
14th Nov 2025558 PMAQI
14th Nov 2025529 PMAQI
14th Nov 20255210 PMAQI
14th Nov 20255311 PMAQI
15th Nov 20255512 AMAQI
15th Nov 2025571 AMAQI
15th Nov 2025572 AMAQI
15th Nov 2025573 AMAQI
15th Nov 2025564 AMAQI
15th Nov 2025565 AMAQI
15th Nov 2025566 AMAQI
13°C11/15°C
15th Nov 2025567 AMAQI
15th Nov 2025488 AMAQI
15th Nov 2025479 AMAQI
15th Nov 20254410 AMAQI
15th Nov 20254411 AMAQI
15th Nov 20254412 PMAQI
15th Nov 2025451 PMAQI
15th Nov 2025542 PMAQI
15th Nov 2025573 PMAQI
15th Nov 2025584 PMAQI
15th Nov 2025865 PMAQI
15th Nov 2025876 PMAQI
15th Nov 2025857 PMAQI
15th Nov 2025688 PMAQI
15th Nov 2025449 PMAQI
15th Nov 20254610 PMAQI
15th Nov 20254511 PMAQI
16th Nov 20254012 AMAQI
16th Nov 2025391 AMAQI
16th Nov 2025292 AMAQI
16th Nov 2025233 AMAQI
16th Nov 2025224 AMAQI
16th Nov 2025225 AMAQI
16th Nov 2025336 AMAQI
13°C11/15°C
16th Nov 2025487 AMAQI
16th Nov 2025498 AMAQI
16th Nov 2025519 AMAQI
16th Nov 20255110 AMAQI
16th Nov 20255011 AMAQI
16th Nov 20254912 PMAQI
16th Nov 2025481 PMAQI
16th Nov 2025442 PMAQI
16th Nov 2025423 PMAQI
16th Nov 2025284 PMAQI
16th Nov 2025275 PMAQI
16th Nov 2025256 PMAQI
16th Nov 2025187 PMAQI
16th Nov 2025228 PMAQI
16th Nov 2025229 PMAQI
16th Nov 20252210 PMAQI
16th Nov 20252011 PMAQI
17th Nov 20251712 AMAQI
17th Nov 2025171 AMAQI
17th Nov 2025222 AMAQI
17th Nov 2025223 AMAQI
17th Nov 2025284 AMAQI
17th Nov 2025235 AMAQI
17th Nov 2025266 AMAQI
9°C6/9°C
17th Nov 2025267 AMAQI
17th Nov 2025188 AMAQI
17th Nov 2025179 AMAQI
17th Nov 20252210 AMAQI
17th Nov 20252211 AMAQI
17th Nov 20251712 PMAQI
17th Nov 2025171 PMAQI
17th Nov 2025162 PMAQI
17th Nov 2025173 PMAQI
17th Nov 2025174 PMAQI
17th Nov 2025175 PMAQI
17th Nov 2025176 PMAQI
17th Nov 2025147 PMAQI
17th Nov 2025118 PMAQI
17th Nov 2025119 PMAQI
17th Nov 20254610 PMAQI
17th Nov 20255911 PMAQI
18th Nov 20255812 AMAQI
18th Nov 2025591 AMAQI
18th Nov 2025602 AMAQI
18th Nov 2025623 AMAQI
18th Nov 2025604 AMAQI
18th Nov 2025605 AMAQI
18th Nov 2025606 AMAQI
7°C5/10°C
18th Nov 2025497 AMAQI
18th Nov 2025348 AMAQI
18th Nov 2025309 AMAQI
18th Nov 20253410 AMAQI
18th Nov 20252911 AMAQI
18th Nov 20254212 PMAQI
18th Nov 2025471 PMAQI
18th Nov 2025492 PMAQI
18th Nov 2025473 PMAQI
18th Nov 2025504 PMAQI
18th Nov 2025505 PMAQI
18th Nov 2025506 PMAQI
18th Nov 2025387 PMAQI
18th Nov 2025288 PMAQI
18th Nov 2025229 PMAQI
18th Nov 20252510 PMAQI
18th Nov 20255511 PMAQI
19th Nov 20255612 AMAQI
19th Nov 2025571 AMAQI
19th Nov 2025562 AMAQI
19th Nov 2025543 AMAQI
19th Nov 2025494 AMAQI
19th Nov 2025395 AMAQI
19th Nov 2025396 AMAQI
6°C4/8°C
19th Nov 2025397 AMAQI
19th Nov 2025478 AMAQI
19th Nov 2025459 AMAQI
19th Nov 20254410 AMAQI
19th Nov 20254011 AMAQI
19th Nov 20253512 PMAQI
19th Nov 2025371 PMAQI
19th Nov 2025342 PMAQI
19th Nov 2025283 PMAQI
19th Nov 2025284 PMAQI
19th Nov 2025285 PMAQI
19th Nov 2025286 PMAQI
19th Nov 2025267 PMAQI
19th Nov 2025268 PMAQI
19th Nov 2025259 PMAQI
19th Nov 20251710 PMAQI
19th Nov 20251711 PMAQI
20th Nov 20251112 AMAQI
20th Nov 2025111 AMAQI
20th Nov 2025112 AMAQI
20th Nov 2025113 AMAQI
20th Nov 2025114 AMAQI
20th Nov 2025115 AMAQI
20th Nov 2025116 AMAQI
6°C4/8°C
20th Nov 2025117 AMAQI
20th Nov 2025118 AMAQI
20th Nov 2025139 AMAQI
20th Nov 20252110 AMAQI
20th Nov 20252711 AMAQI
20th Nov 20252812 PMAQI
20th Nov 2025281 PMAQI
20th Nov 2025282 PMAQI
20th Nov 2025283 PMAQI
20th Nov 2025264 PMAQI
20th Nov 2025265 PMAQI
20th Nov 2025206 PMAQI
20th Nov 2025177 PMAQI
20th Nov 2025178 PMAQI
20th Nov 2025199 PMAQI
20th Nov 20253210 PMAQI
20th Nov 20253311 PMAQI
21st Nov 20252812 AMAQI
21st Nov 2025281 AMAQI
21st Nov 2025352 AMAQI
21st Nov 2025393 AMAQI
21st Nov 2025384 AMAQI
21st Nov 2025395 AMAQI
21st Nov 2025446 AMAQI
4°C3/6°C
21st Nov 2025477 AMAQI
7 AM21st Nov 2025558 AMAQI
21st Nov 2025599 AMAQI
21st Nov 20257510 AMAQI
21st Nov 20257511 AMAQI
21st Nov 20257012 PMAQI
12 PM21st Nov 2025701 PMAQI
21st Nov 2025812 PMAQI
21st Nov 2025733 PMAQI
21st Nov 2025764 PMAQI
21st Nov 2025715 PMAQI
5 PM21st Nov 2025636 PMAQI
21st Nov 2025647 PMAQI
21st Nov 2025618 PMAQI
21st Nov 2025639 PMAQI
21st Nov 20256810 PMAQI
21st Nov 20257011 PMAQI
12 AM
6 AM
--°C/°C
Day time
Avg. Highest Time
1 PM - 2 PM
35AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
8 AM
30AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 PM to 2 PM (Avg. 35), while the lowest AQI was between 8 AM to 8 AM (Avg. 30).
Night time
Avg. Highest Time
11 PM
36AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
7 PM - 8 PM
29AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 11 PM to 11 PM (Avg. 36), while the lowest AQI was between 7 PM to 8 PM (Avg. 29).
2025 Days Vs Air Quality
Sint Niklaas, Flanders, Belgium
2025
74%
240
23%
75
3%
9
Total number of days with different AQI categories in last 325 days in 2025 (40 days remaining)
Good
240 DaysModerate
75 DaysPoor
9 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 74%
Health Risk Level:
Low
In 2025, 74% of 325 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Sint Niklaas, Flanders, Belgium
AQI levels in 2025
AQI
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 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
30AQI
30AQI
2nd January 2025
23AQI
23AQI
3rd January 2025
27AQI
27AQI
4th January 2025
58AQI
58AQI
5th January 2025
33AQI
33AQI
6th January 2025
21AQI
21AQI
7th January 2025
20AQI
20AQI
8th January 2025
32AQI
32AQI
9th January 2025
28AQI
28AQI
10th January 2025
57AQI
57AQI
11th January 2025
99AQI
99AQI
12th January 2025
65AQI
65AQI
13th January 2025
69AQI
69AQI
14th January 2025
86AQI
86AQI
15th January 2025
93AQI
93AQI
16th January 2025
62AQI
62AQI
17th January 2025
81AQI
81AQI
18th January 2025
74AQI
74AQI
19th January 2025
93AQI
93AQI
20th January 2025
112AQI
112AQI
21st January 2025
85AQI
85AQI
22nd January 2025
78AQI
78AQI
23rd January 2025
59AQI
59AQI
24th January 2025
27AQI
27AQI
25th January 2025
32AQI
32AQI
26th January 2025
28AQI
28AQI
27th January 2025
17AQI
17AQI
28th January 2025
20AQI
20AQI
29th January 2025
26AQI
26AQI
30th January 2025
33AQI
33AQI
31st January 2025
51AQI
51AQI
1st February 2025
60AQI
60AQI
2nd February 2025
68AQI
68AQI
3rd February 2025
104AQI
104AQI
4th February 2025
70AQI
70AQI
5th February 2025
76AQI
76AQI
6th February 2025
65AQI
65AQI
7th February 2025
55AQI
55AQI
8th February 2025
67AQI
67AQI
9th February 2025
64AQI
64AQI
10th February 2025
138AQI
138AQI
11th February 2025
92AQI
92AQI
12th February 2025
86AQI
86AQI
13th February 2025
106AQI
106AQI
14th February 2025
118AQI
118AQI
15th February 2025
88AQI
88AQI
16th February 2025
61AQI
61AQI
17th February 2025
70AQI
70AQI
18th February 2025
78AQI
78AQI
19th February 2025
81AQI
81AQI
20th February 2025
80AQI
80AQI
21st February 2025
53AQI
53AQI
22nd February 2025
48AQI
48AQI
23rd February 2025
43AQI
43AQI
24th February 2025
23AQI
23AQI
25th February 2025
50AQI
50AQI
26th February 2025
36AQI
36AQI
27th February 2025
29AQI
29AQI
28th February 2025
37AQI
37AQI
1st March 2025
42AQI
42AQI
2nd March 2025
65AQI
65AQI
3rd March 2025
92AQI
92AQI
4th March 2025
129AQI
129AQI
5th March 2025
107AQI
107AQI
6th March 2025
84AQI
84AQI
7th March 2025
59AQI
59AQI
8th March 2025
71AQI
71AQI
9th March 2025
89AQI
89AQI
10th March 2025
125AQI
125AQI
11th March 2025
83AQI
83AQI
12th March 2025
32AQI
32AQI
13th March 2025
40AQI
40AQI
14th March 2025
32AQI
32AQI
15th March 2025
42AQI
42AQI
16th March 2025
44AQI
44AQI
17th March 2025
38AQI
38AQI
18th March 2025
34AQI
34AQI
19th March 2025
48AQI
48AQI
20th March 2025
57AQI
57AQI
21st March 2025
62AQI
62AQI
22nd March 2025
38AQI
38AQI
23rd March 2025
24AQI
24AQI
24th March 2025
84AQI
84AQI
25th March 2025
121AQI
121AQI
26th March 2025
57AQI
57AQI
27th March 2025
66AQI
66AQI
28th March 2025
75AQI
75AQI
29th March 2025
39AQI
39AQI
30th March 2025
36AQI
36AQI
31st March 2025
36AQI
36AQI
1st April 2025
39AQI
39AQI
2nd April 2025
42AQI
42AQI
3rd April 2025
56AQI
56AQI
4th April 2025
62AQI
62AQI
5th April 2025
46AQI
46AQI
6th April 2025
20AQI
20AQI
7th April 2025
34AQI
34AQI
8th April 2025
48AQI
48AQI
9th April 2025
55AQI
55AQI
10th April 2025
47AQI
47AQI
11th April 2025
62AQI
62AQI
12th April 2025
74AQI
74AQI
13th April 2025
49AQI
49AQI
14th April 2025
28AQI
28AQI
15th April 2025
39AQI
39AQI
16th April 2025
24AQI
24AQI
17th April 2025
39AQI
39AQI
18th April 2025
49AQI
49AQI
19th April 2025
44AQI
44AQI
20th April 2025
48AQI
48AQI
21st April 2025
45AQI
45AQI
22nd April 2025
57AQI
57AQI
23rd April 2025
39AQI
39AQI
24th April 2025
63AQI
63AQI
25th April 2025
51AQI
51AQI
26th April 2025
65AQI
65AQI
27th April 2025
46AQI
46AQI
28th April 2025
57AQI
57AQI
29th April 2025
52AQI
52AQI
30th April 2025
49AQI
49AQI
1st May 2025
48AQI
48AQI
2nd May 2025
70AQI
70AQI
3rd May 2025
50AQI
50AQI
4th May 2025
22AQI
22AQI
5th May 2025
23AQI
23AQI
6th May 2025
23AQI
23AQI
7th May 2025
32AQI
32AQI
8th May 2025
27AQI
27AQI
9th May 2025
25AQI
25AQI
10th May 2025
26AQI
26AQI
11th May 2025
26AQI
26AQI
12th May 2025
23AQI
23AQI
13th May 2025
40AQI
40AQI
14th May 2025
42AQI
42AQI
15th May 2025
44AQI
44AQI
16th May 2025
36AQI
36AQI
17th May 2025
36AQI
36AQI
18th May 2025
38AQI
38AQI
19th May 2025
35AQI
35AQI
20th May 2025
30AQI
30AQI
21st May 2025
42AQI
42AQI
22nd May 2025
30AQI
30AQI
23rd May 2025
20AQI
20AQI
24th May 2025
29AQI
29AQI
25th May 2025
20AQI
20AQI
26th May 2025
30AQI
30AQI
27th May 2025
20AQI
20AQI
28th May 2025
22AQI
22AQI
29th May 2025
27AQI
27AQI
30th May 2025
25AQI
25AQI
31st May 2025
41AQI
41AQI
1st June 2025
39AQI
39AQI
2nd June 2025
28AQI
28AQI
3rd June 2025
27AQI
27AQI
4th June 2025
22AQI
22AQI
5th June 2025
18AQI
18AQI
6th June 2025
18AQI
18AQI
7th June 2025
14AQI
14AQI
8th June 2025
18AQI
18AQI
9th June 2025
44AQI
44AQI
10th June 2025
57AQI
57AQI
11th June 2025
42AQI
42AQI
12th June 2025
47AQI
47AQI
13th June 2025
55AQI
55AQI
14th June 2025
49AQI
49AQI
15th June 2025
35AQI
35AQI
16th June 2025
35AQI
35AQI
17th June 2025
36AQI
36AQI
18th June 2025
35AQI
35AQI
19th June 2025
36AQI
36AQI
20th June 2025
34AQI
34AQI
21st June 2025
32AQI
32AQI
22nd June 2025
29AQI
29AQI
23rd June 2025
23AQI
23AQI
24th June 2025
24AQI
24AQI
25th June 2025
23AQI
23AQI
26th June 2025
27AQI
27AQI
27th June 2025
28AQI
28AQI
28th June 2025
20AQI
20AQI
29th June 2025
18AQI
18AQI
30th June 2025
25AQI
25AQI
1st July 2025
31AQI
31AQI
2nd July 2025
38AQI
38AQI
3rd July 2025
24AQI
24AQI
4th July 2025
22AQI
22AQI
5th July 2025
21AQI
21AQI
6th July 2025
18AQI
18AQI
7th July 2025
20AQI
20AQI
8th July 2025
21AQI
21AQI
9th July 2025
26AQI
26AQI
10th July 2025
27AQI
27AQI
11th July 2025
24AQI
24AQI
12th July 2025
23AQI
23AQI
13th July 2025
25AQI
25AQI
14th July 2025
38AQI
38AQI
15th July 2025
28AQI
28AQI
16th July 2025
25AQI
25AQI
17th July 2025
24AQI
24AQI
18th July 2025
24AQI
24AQI
19th July 2025
34AQI
34AQI
20th July 2025
36AQI
36AQI
21st July 2025
19AQI
19AQI
22nd July 2025
20AQI
20AQI
23rd July 2025
20AQI
20AQI
24th July 2025
26AQI
26AQI
25th July 2025
31AQI
31AQI
26th July 2025
39AQI
39AQI
27th July 2025
25AQI
25AQI
28th July 2025
25AQI
25AQI
29th July 2025
33AQI
33AQI
30th July 2025
29AQI
29AQI
31st July 2025
26AQI
26AQI
1st August 2025
21AQI
21AQI
2nd August 2025
20AQI
20AQI
3rd August 2025
22AQI
22AQI
4th August 2025
25AQI
25AQI
5th August 2025
22AQI
22AQI
6th August 2025
26AQI
26AQI
7th August 2025
27AQI
27AQI
8th August 2025
31AQI
31AQI
9th August 2025
48AQI
48AQI
10th August 2025
37AQI
37AQI
11th August 2025
42AQI
42AQI
12th August 2025
48AQI
48AQI
13th August 2025
57AQI
57AQI
14th August 2025
57AQI
57AQI
15th August 2025
41AQI
41AQI
16th August 2025
47AQI
47AQI
17th August 2025
32AQI
32AQI
18th August 2025
23AQI
23AQI
19th August 2025
24AQI
24AQI
20th August 2025
28AQI
28AQI
21st August 2025
24AQI
24AQI
22nd August 2025
19AQI
19AQI
23rd August 2025
20AQI
20AQI
24th August 2025
19AQI
19AQI
25th August 2025
21AQI
21AQI
26th August 2025
30AQI
30AQI
27th August 2025
28AQI
28AQI
28th August 2025
29AQI
29AQI
29th August 2025
23AQI
23AQI
30th August 2025
20AQI
20AQI
31st August 2025
18AQI
18AQI
1st September 2025
21AQI
21AQI
2nd September 2025
18AQI
18AQI
3rd September 2025
17AQI
17AQI
4th September 2025
17AQI
17AQI
5th September 2025
19AQI
19AQI
6th September 2025
21AQI
21AQI
7th September 2025
21AQI
21AQI
8th September 2025
23AQI
23AQI
9th September 2025
22AQI
22AQI
10th September 2025
23AQI
23AQI
11th September 2025
20AQI
20AQI
12th September 2025
19AQI
19AQI
13th September 2025
17AQI
17AQI
14th September 2025
18AQI
18AQI
15th September 2025
23AQI
23AQI
16th September 2025
25AQI
25AQI
17th September 2025
22AQI
22AQI
18th September 2025
15AQI
15AQI
19th September 2025
21AQI
21AQI
20th September 2025
27AQI
27AQI
21st September 2025
22AQI
22AQI
22nd September 2025
18AQI
18AQI
23rd September 2025
16AQI
16AQI
24th September 2025
13AQI
13AQI
25th September 2025
15AQI
15AQI
26th September 2025
25AQI
25AQI
27th September 2025
46AQI
46AQI
28th September 2025
35AQI
35AQI
29th September 2025
37AQI
37AQI
30th September 2025
18AQI
18AQI
1st October 2025
63AQI
63AQI
2nd October 2025
57AQI
57AQI
3rd October 2025
45AQI
45AQI
4th October 2025
38AQI
38AQI
5th October 2025
44AQI
44AQI
6th October 2025
51AQI
51AQI
7th October 2025
59AQI
59AQI
8th October 2025
59AQI
59AQI
9th October 2025
50AQI
50AQI
10th October 2025
53AQI
53AQI
11th October 2025
79AQI
79AQI
12th October 2025
62AQI
62AQI
13th October 2025
42AQI
42AQI
14th October 2025
56AQI
56AQI
15th October 2025
50AQI
50AQI
16th October 2025
50AQI
50AQI
17th October 2025
53AQI
53AQI
18th October 2025
53AQI
53AQI
19th October 2025
51AQI
51AQI
20th October 2025
41AQI
41AQI
21st October 2025
25AQI
25AQI
22nd October 2025
28AQI
28AQI
23rd October 2025
26AQI
26AQI
24th October 2025
22AQI
22AQI
25th October 2025
17AQI
17AQI
26th October 2025
18AQI
18AQI
27th October 2025
24AQI
24AQI
28th October 2025
27AQI
27AQI
29th October 2025
31AQI
31AQI
30th October 2025
32AQI
32AQI
31st October 2025
29AQI
29AQI
1st November 2025
18AQI
18AQI
2nd November 2025
20AQI
20AQI
3rd November 2025
34AQI
34AQI
4th November 2025
26AQI
26AQI
5th November 2025
22AQI
22AQI
6th November 2025
37AQI
37AQI
7th November 2025
46AQI
46AQI
8th November 2025
48AQI
48AQI
9th November 2025
56AQI
56AQI
10th November 2025
36AQI
36AQI
11th November 2025
29AQI
29AQI
12th November 2025
26AQI
26AQI
13th November 2025
34AQI
34AQI
14th November 2025
50AQI
50AQI
15th November 2025
57AQI
57AQI
16th November 2025
34AQI
34AQI
17th November 2025
21AQI
21AQI
18th November 2025
48AQI
48AQI
19th November 2025
40AQI
40AQI
20th November 2025
18AQI
18AQI
21st November 2025
22nd November 2025
23rd November 2025
24th November 2025
25th November 2025
26th November 2025
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025
52AQI
70AQI
63AQI
48AQI
32AQI
31AQI
27AQI
30AQI
22AQI
43AQI
35AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202541AQI
15
15
1
7
17
4
14
13
4
19
11
30
1
28
2
31
29
2
30
19
12
18
2
240
75
9
Highest AQI recorded in
February70AQI
Lowest AQI recorded in
September22AQI
202438AQI
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 recorded in
January46AQI
Lowest AQI recorded in
April23AQI
202337AQI
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 recorded in
May47AQI
Lowest AQI recorded in
July26AQI
202244AQI
16
12
3
19
2
7
20
4
18
12
19
12
28
2
23
1
1
27
1
23
6
4
185
68
7
Highest AQI recorded in
March73AQI
Lowest AQI recorded in
November25AQI
202150AQI
14
16
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
156
6
1
Highest AQI recorded in
March65AQI
Lowest AQI recorded in
August37AQI
202044AQI
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 recorded in
November60AQI
Lowest AQI recorded in
July28AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2021(Avg.)
50AQILeast Polluted Year Recorded
2023(Avg.)
37AQISint Niklaas's annual 2025 AQI (41) shows an average percentage change of -2.3% (improved AQI) compared to previous years: 2020 (44), 2021 (50), 2022 (44), 2023 (37), 2024 (38).
