Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

Grande Synthe, Hauts De France, France 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+

October Air Quality Analysis

Grande Synthe, Hauts De France, France

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
9th Oct 2021
96AQI
Lowest AQI recorded on
5th Oct 2021
18AQI

Same Day Analysis (10th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 64 of Moderate air quality, showing improvement over 2023 and 2021 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 10th Oct - 11th Oct 2025

Grande Synthe, Hauts De France, France

AQI
Day
Night
.

7 AM10th Oct 2025

7 PM

6 AM11th Oct 2025

Day time
Avg. Highest Time
5PM10th Oct

72AQI

Avg. Lowest Time
8AM10th Oct

56AQI

Night time
Avg. Highest Time
2AM11th Oct

86AQI

Avg. Lowest Time
7AM10th Oct

57AQI

In the last 24 hours,

Grande Synthe's AQI reached its highest point of 86 at 2 AM during the Night, while the lowest point, 56, was recorded at 8 AM during the Day between 10th Oct and 11th Oct 2025.

Day & Night AQI Trend : Sep - Oct 2025

Grande Synthe, Hauts De France, France

SepOct
11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th
Day
Night
11th Sep 2025197 AMAQI
11th Sep 2025218 AMAQI
11th Sep 2025239 AMAQI
11th Sep 20252310 AMAQI
11th Sep 20252111 AMAQI
11th Sep 20252212 PMAQI
11th Sep 2025231 PMAQI
11th Sep 2025252 PMAQI
11th Sep 2025213 PMAQI
11th Sep 2025224 PMAQI
11th Sep 2025225 PMAQI
11th Sep 2025206 PMAQI
11th Sep 2025207 PMAQI
11th Sep 2025218 PMAQI
11th Sep 2025229 PMAQI
11th Sep 20252210 PMAQI
11th Sep 20252211 PMAQI
12th Sep 20252212 AMAQI
12th Sep 2025211 AMAQI
12th Sep 2025202 AMAQI
12th Sep 2025203 AMAQI
12th Sep 2025194 AMAQI
12th Sep 2025195 AMAQI
12th Sep 2025196 AMAQI

16°C15/18°C

12th Sep 2025167 AMAQI
12th Sep 2025198 AMAQI
12th Sep 2025199 AMAQI
12th Sep 20252110 AMAQI
12th Sep 20252311 AMAQI
12th Sep 20252312 PMAQI
12th Sep 2025221 PMAQI
12th Sep 2025212 PMAQI
12th Sep 2025193 PMAQI
12th Sep 2025204 PMAQI
12th Sep 2025195 PMAQI
12th Sep 2025196 PMAQI
12th Sep 2025187 PMAQI
12th Sep 2025198 PMAQI
12th Sep 2025189 PMAQI
12th Sep 20252010 PMAQI
12th Sep 20251911 PMAQI
13th Sep 20251912 AMAQI
13th Sep 2025191 AMAQI
13th Sep 2025182 AMAQI
13th Sep 2025153 AMAQI
13th Sep 2025164 AMAQI
13th Sep 2025145 AMAQI
13th Sep 2025146 AMAQI

15°C14/18°C

13th Sep 2025177 AMAQI
13th Sep 2025188 AMAQI
13th Sep 2025189 AMAQI
13th Sep 20251510 AMAQI
13th Sep 20251811 AMAQI
13th Sep 20251912 PMAQI
13th Sep 2025191 PMAQI
13th Sep 2025192 PMAQI
13th Sep 2025183 PMAQI
13th Sep 2025174 PMAQI
13th Sep 2025175 PMAQI
13th Sep 2025176 PMAQI
13th Sep 2025187 PMAQI
13th Sep 2025178 PMAQI
13th Sep 2025189 PMAQI
13th Sep 20251810 PMAQI
13th Sep 20251711 PMAQI
14th Sep 20251812 AMAQI
14th Sep 2025181 AMAQI
14th Sep 2025182 AMAQI
14th Sep 2025183 AMAQI
14th Sep 2025194 AMAQI
14th Sep 2025165 AMAQI
14th Sep 2025196 AMAQI

15°C13/17°C

14th Sep 2025187 AMAQI
14th Sep 2025188 AMAQI
14th Sep 2025199 AMAQI
14th Sep 20252010 AMAQI
14th Sep 20252011 AMAQI
14th Sep 20252312 PMAQI
14th Sep 2025211 PMAQI
14th Sep 2025202 PMAQI
14th Sep 2025203 PMAQI
14th Sep 2025204 PMAQI
14th Sep 2025195 PMAQI
14th Sep 2025176 PMAQI
14th Sep 2025177 PMAQI
14th Sep 2025178 PMAQI
14th Sep 2025189 PMAQI
14th Sep 20251810 PMAQI
14th Sep 20251811 PMAQI
15th Sep 20251912 AMAQI
15th Sep 2025181 AMAQI
15th Sep 2025152 AMAQI
15th Sep 2025183 AMAQI
15th Sep 2025154 AMAQI
15th Sep 2025195 AMAQI
15th Sep 2025206 AMAQI

16°C13/19°C

15th Sep 2025397 AMAQI
15th Sep 2025368 AMAQI
15th Sep 2025389 AMAQI
15th Sep 20254310 AMAQI
15th Sep 20254011 AMAQI
15th Sep 20255012 PMAQI
15th Sep 2025371 PMAQI
15th Sep 2025312 PMAQI
15th Sep 2025323 PMAQI
15th Sep 2025274 PMAQI
15th Sep 2025265 PMAQI
15th Sep 2025266 PMAQI
15th Sep 2025287 PMAQI
15th Sep 2025298 PMAQI
15th Sep 2025309 PMAQI
15th Sep 20252910 PMAQI
15th Sep 20252911 PMAQI
16th Sep 20252812 AMAQI
16th Sep 2025271 AMAQI
16th Sep 2025302 AMAQI
16th Sep 2025323 AMAQI
16th Sep 2025294 AMAQI
16th Sep 2025315 AMAQI
16th Sep 2025316 AMAQI

17°C15/18°C

16th Sep 2025297 AMAQI
16th Sep 2025308 AMAQI
16th Sep 2025329 AMAQI
16th Sep 20252810 AMAQI
16th Sep 20252711 AMAQI
16th Sep 20252712 PMAQI
16th Sep 2025261 PMAQI
16th Sep 2025252 PMAQI
16th Sep 2025253 PMAQI
16th Sep 2025244 PMAQI
16th Sep 2025255 PMAQI
16th Sep 2025266 PMAQI
16th Sep 2025267 PMAQI
16th Sep 2025278 PMAQI
16th Sep 2025289 PMAQI
16th Sep 20252910 PMAQI
16th Sep 20252811 PMAQI
17th Sep 20252912 AMAQI
17th Sep 2025301 AMAQI
17th Sep 2025282 AMAQI
17th Sep 2025263 AMAQI
17th Sep 2025264 AMAQI
17th Sep 2025255 AMAQI
17th Sep 2025216 AMAQI

16°C15/18°C

17th Sep 2025217 AMAQI
17th Sep 2025208 AMAQI
17th Sep 2025199 AMAQI
17th Sep 20252110 AMAQI
17th Sep 20252211 AMAQI
17th Sep 20252312 PMAQI
17th Sep 2025231 PMAQI
17th Sep 2025232 PMAQI
17th Sep 2025213 PMAQI
17th Sep 2025224 PMAQI
17th Sep 2025235 PMAQI
17th Sep 2025236 PMAQI
17th Sep 2025227 PMAQI
17th Sep 2025228 PMAQI
17th Sep 2025239 PMAQI
17th Sep 20252310 PMAQI
17th Sep 20252311 PMAQI
18th Sep 20252312 AMAQI
18th Sep 2025231 AMAQI
18th Sep 2025202 AMAQI
18th Sep 2025193 AMAQI
18th Sep 2025204 AMAQI
18th Sep 2025185 AMAQI
18th Sep 2025166 AMAQI

16°C14/20°C

18th Sep 2025187 AMAQI
18th Sep 2025158 AMAQI
18th Sep 2025159 AMAQI
18th Sep 20251610 AMAQI
18th Sep 20251511 AMAQI
18th Sep 20251512 PMAQI
18th Sep 2025161 PMAQI
18th Sep 2025182 PMAQI
18th Sep 2025183 PMAQI
18th Sep 2025194 PMAQI
18th Sep 2025195 PMAQI
18th Sep 2025186 PMAQI
18th Sep 2025187 PMAQI
18th Sep 2025168 PMAQI
18th Sep 2025179 PMAQI
18th Sep 20251810 PMAQI
18th Sep 20251811 PMAQI
19th Sep 20251912 AMAQI
19th Sep 2025191 AMAQI
19th Sep 2025162 AMAQI
19th Sep 2025163 AMAQI
19th Sep 2025164 AMAQI
19th Sep 2025175 AMAQI
19th Sep 2025186 AMAQI

19°C17/21°C

19th Sep 2025207 AMAQI
19th Sep 2025208 AMAQI
19th Sep 2025229 AMAQI
19th Sep 20252610 AMAQI
19th Sep 20252611 AMAQI
19th Sep 20252812 PMAQI
19th Sep 2025281 PMAQI
19th Sep 2025222 PMAQI
19th Sep 2025223 PMAQI
19th Sep 2025214 PMAQI
19th Sep 2025215 PMAQI
19th Sep 2025206 PMAQI
19th Sep 2025217 PMAQI
19th Sep 2025218 PMAQI
19th Sep 2025209 PMAQI
19th Sep 20252110 PMAQI
19th Sep 20252111 PMAQI
20th Sep 20252212 AMAQI
20th Sep 2025211 AMAQI
20th Sep 2025322 AMAQI
20th Sep 2025403 AMAQI
20th Sep 2025324 AMAQI
20th Sep 2025355 AMAQI
20th Sep 2025346 AMAQI

20°C16/26°C

20th Sep 2025367 AMAQI
20th Sep 2025388 AMAQI
20th Sep 2025429 AMAQI
20th Sep 20254110 AMAQI
20th Sep 20254111 AMAQI
20th Sep 20254012 PMAQI
20th Sep 2025381 PMAQI
20th Sep 2025382 PMAQI
20th Sep 2025373 PMAQI
20th Sep 2025364 PMAQI
20th Sep 2025335 PMAQI
20th Sep 2025336 PMAQI
20th Sep 2025317 PMAQI
20th Sep 2025318 PMAQI
20th Sep 2025329 PMAQI
20th Sep 20253310 PMAQI
20th Sep 20253311 PMAQI
21st Sep 20253212 AMAQI
21st Sep 2025311 AMAQI
21st Sep 2025302 AMAQI
21st Sep 2025263 AMAQI
21st Sep 2025224 AMAQI
21st Sep 2025205 AMAQI
21st Sep 2025216 AMAQI

19°C16/21°C

21st Sep 2025217 AMAQI
21st Sep 2025188 AMAQI
21st Sep 2025179 AMAQI
21st Sep 20251410 AMAQI
21st Sep 20251311 AMAQI
21st Sep 20251612 PMAQI
21st Sep 2025191 PMAQI
21st Sep 2025242 PMAQI
21st Sep 2025263 PMAQI
21st Sep 2025274 PMAQI
21st Sep 2025265 PMAQI
21st Sep 2025246 PMAQI
21st Sep 2025257 PMAQI
21st Sep 2025258 PMAQI
21st Sep 2025249 PMAQI
21st Sep 20252310 PMAQI
21st Sep 20252311 PMAQI
22nd Sep 20252312 AMAQI
22nd Sep 2025231 AMAQI
22nd Sep 2025202 AMAQI
22nd Sep 2025183 AMAQI
22nd Sep 2025184 AMAQI
22nd Sep 2025195 AMAQI
22nd Sep 2025256 AMAQI

14°C13/15°C

22nd Sep 2025237 AMAQI
22nd Sep 2025218 AMAQI
22nd Sep 2025189 AMAQI
22nd Sep 20252410 AMAQI
22nd Sep 20252211 AMAQI
22nd Sep 20251812 PMAQI
22nd Sep 2025231 PMAQI
22nd Sep 2025222 PMAQI
22nd Sep 2025213 PMAQI
22nd Sep 2025224 PMAQI
22nd Sep 2025235 PMAQI
22nd Sep 2025246 PMAQI
22nd Sep 2025257 PMAQI
22nd Sep 2025248 PMAQI
22nd Sep 2025209 PMAQI
22nd Sep 20252010 PMAQI
22nd Sep 20252011 PMAQI
23rd Sep 20252012 AMAQI
23rd Sep 2025211 AMAQI
23rd Sep 2025192 AMAQI
23rd Sep 2025193 AMAQI
23rd Sep 2025164 AMAQI
23rd Sep 2025145 AMAQI
23rd Sep 2025166 AMAQI

14°C14/16°C

23rd Sep 2025167 AMAQI
23rd Sep 2025168 AMAQI
23rd Sep 2025169 AMAQI
23rd Sep 20251810 AMAQI
23rd Sep 20251911 AMAQI
23rd Sep 20252212 PMAQI
23rd Sep 2025201 PMAQI
23rd Sep 2025192 PMAQI
23rd Sep 2025173 PMAQI
23rd Sep 2025174 PMAQI
23rd Sep 2025175 PMAQI
23rd Sep 2025186 PMAQI
23rd Sep 2025217 PMAQI
23rd Sep 2025208 PMAQI
23rd Sep 2025199 PMAQI
23rd Sep 20251810 PMAQI
23rd Sep 20251811 PMAQI
24th Sep 20251812 AMAQI
24th Sep 2025181 AMAQI
24th Sep 2025182 AMAQI
24th Sep 2025193 AMAQI
24th Sep 2025184 AMAQI
24th Sep 2025185 AMAQI
24th Sep 2025166 AMAQI

14°C13/16°C

24th Sep 2025177 AMAQI
24th Sep 2025178 AMAQI
24th Sep 2025199 AMAQI
24th Sep 20251910 AMAQI
24th Sep 20252211 AMAQI
24th Sep 20252212 PMAQI
24th Sep 2025211 PMAQI
24th Sep 2025192 PMAQI
24th Sep 2025193 PMAQI
24th Sep 2025204 PMAQI
24th Sep 2025195 PMAQI
24th Sep 2025186 PMAQI
24th Sep 2025187 PMAQI
24th Sep 2025208 PMAQI
24th Sep 2025189 PMAQI
24th Sep 20251810 PMAQI
24th Sep 20251811 PMAQI
25th Sep 20251812 AMAQI
25th Sep 2025181 AMAQI
25th Sep 2025172 AMAQI
25th Sep 2025163 AMAQI
25th Sep 2025194 AMAQI
25th Sep 2025195 AMAQI
25th Sep 2025196 AMAQI

15°C13/16°C

25th Sep 2025217 AMAQI
25th Sep 2025238 AMAQI
25th Sep 2025259 AMAQI
25th Sep 20252610 AMAQI
25th Sep 20252711 AMAQI
25th Sep 20252812 PMAQI
25th Sep 2025281 PMAQI
25th Sep 2025262 PMAQI
25th Sep 2025263 PMAQI
25th Sep 2025294 PMAQI
25th Sep 2025295 PMAQI
25th Sep 2025286 PMAQI
25th Sep 2025287 PMAQI
25th Sep 2025248 PMAQI
25th Sep 2025249 PMAQI
25th Sep 20252710 PMAQI
25th Sep 20252811 PMAQI
26th Sep 20252612 AMAQI
26th Sep 2025241 AMAQI
26th Sep 2025212 AMAQI
26th Sep 2025213 AMAQI
26th Sep 2025234 AMAQI
26th Sep 2025235 AMAQI
26th Sep 2025286 AMAQI

14°C13/15°C

26th Sep 2025337 AMAQI
26th Sep 2025418 AMAQI
26th Sep 2025529 AMAQI
26th Sep 20255310 AMAQI
26th Sep 20255511 AMAQI
26th Sep 20255412 PMAQI
26th Sep 2025551 PMAQI
26th Sep 2025572 PMAQI
26th Sep 2025593 PMAQI
26th Sep 2025554 PMAQI
26th Sep 2025545 PMAQI
26th Sep 2025526 PMAQI
26th Sep 2025467 PMAQI
26th Sep 2025408 PMAQI
26th Sep 2025439 PMAQI
26th Sep 20254610 PMAQI
26th Sep 20254611 PMAQI
27th Sep 20255312 AMAQI
27th Sep 2025621 AMAQI
27th Sep 2025642 AMAQI
27th Sep 2025563 AMAQI
27th Sep 2025524 AMAQI
27th Sep 2025525 AMAQI
27th Sep 2025526 AMAQI

13°C11/16°C

27th Sep 2025527 AMAQI
27th Sep 2025528 AMAQI
27th Sep 2025529 AMAQI
27th Sep 20255210 AMAQI
27th Sep 20254811 AMAQI
27th Sep 20254812 PMAQI
27th Sep 2025511 PMAQI
27th Sep 2025652 PMAQI
27th Sep 2025663 PMAQI
27th Sep 2025664 PMAQI
27th Sep 2025645 PMAQI
27th Sep 2025626 PMAQI
27th Sep 2025627 PMAQI
27th Sep 2025648 PMAQI
27th Sep 2025629 PMAQI
27th Sep 20256210 PMAQI
27th Sep 20256211 PMAQI
28th Sep 20256212 AMAQI
28th Sep 2025621 AMAQI
28th Sep 2025622 AMAQI
28th Sep 2025623 AMAQI
28th Sep 2025624 AMAQI
28th Sep 2025625 AMAQI
28th Sep 2025626 AMAQI

14°C11/17°C

28th Sep 2025617 AMAQI
28th Sep 2025618 AMAQI
28th Sep 2025619 AMAQI
28th Sep 20256110 AMAQI
28th Sep 20256111 AMAQI
28th Sep 20256212 PMAQI
28th Sep 2025601 PMAQI
28th Sep 2025592 PMAQI
28th Sep 2025583 PMAQI
28th Sep 2025584 PMAQI
28th Sep 2025585 PMAQI
28th Sep 2025586 PMAQI
28th Sep 2025447 PMAQI
28th Sep 2025328 PMAQI
28th Sep 2025369 PMAQI
28th Sep 20253910 PMAQI
28th Sep 20253911 PMAQI
29th Sep 20254612 AMAQI
29th Sep 2025591 AMAQI
29th Sep 2025582 AMAQI
29th Sep 2025593 AMAQI
29th Sep 2025604 AMAQI
29th Sep 2025585 AMAQI
29th Sep 2025626 AMAQI

14°C11/18°C

29th Sep 2025637 AMAQI
29th Sep 2025618 AMAQI
29th Sep 2025629 AMAQI
29th Sep 20256710 AMAQI
29th Sep 20256811 AMAQI
29th Sep 20257112 PMAQI
29th Sep 2025751 PMAQI
29th Sep 2025812 PMAQI
29th Sep 2025593 PMAQI
29th Sep 2025564 PMAQI
29th Sep 2025385 PMAQI
29th Sep 2025336 PMAQI
29th Sep 2025257 PMAQI
29th Sep 2025268 PMAQI
29th Sep 2025319 PMAQI
29th Sep 20253610 PMAQI
29th Sep 20253211 PMAQI
30th Sep 20253712 AMAQI
30th Sep 2025381 AMAQI
30th Sep 2025362 AMAQI
30th Sep 2025323 AMAQI
30th Sep 2025254 AMAQI
30th Sep 2025215 AMAQI
30th Sep 2025216 AMAQI

15°C14/16°C

30th Sep 2025217 AMAQI
30th Sep 2025318 AMAQI
30th Sep 2025329 AMAQI
30th Sep 20253110 AMAQI
30th Sep 20253111 AMAQI
30th Sep 20254412 PMAQI
30th Sep 2025451 PMAQI
30th Sep 2025552 PMAQI
30th Sep 2025563 PMAQI
30th Sep 2025354 PMAQI
30th Sep 2025375 PMAQI
30th Sep 2025296 PMAQI
30th Sep 2025157 PMAQI
30th Sep 2025148 PMAQI
30th Sep 2025169 PMAQI
30th Sep 20251610 PMAQI
30th Sep 20251411 PMAQI
1st Oct 20251512 AMAQI
1st Oct 2025191 AMAQI
1st Oct 2025242 AMAQI
1st Oct 2025313 AMAQI
1st Oct 2025314 AMAQI
1st Oct 2025355 AMAQI
1st Oct 2025386 AMAQI

15°C14/16°C

1st Oct 2025417 AMAQI
1st Oct 2025428 AMAQI
1st Oct 2025479 AMAQI
1st Oct 20254810 AMAQI
1st Oct 20255011 AMAQI
1st Oct 20255412 PMAQI
1st Oct 2025541 PMAQI
1st Oct 2025532 PMAQI
1st Oct 2025513 PMAQI
1st Oct 2025594 PMAQI
1st Oct 2025625 PMAQI
1st Oct 2025606 PMAQI
1st Oct 2025597 PMAQI
1st Oct 2025608 PMAQI
1st Oct 2025619 PMAQI
1st Oct 20256210 PMAQI
1st Oct 20257211 PMAQI
2nd Oct 20259112 AMAQI
2nd Oct 20251081 AMAQI
2nd Oct 20251122 AMAQI
2nd Oct 20251133 AMAQI
2nd Oct 20251104 AMAQI
2nd Oct 20251065 AMAQI
2nd Oct 20251006 AMAQI

14°C12/17°C

2nd Oct 2025927 AMAQI
2nd Oct 2025908 AMAQI
2nd Oct 2025869 AMAQI
2nd Oct 20258610 AMAQI
2nd Oct 20258411 AMAQI
2nd Oct 20258112 PMAQI
2nd Oct 2025801 PMAQI
2nd Oct 2025792 PMAQI
2nd Oct 2025773 PMAQI
2nd Oct 2025734 PMAQI
2nd Oct 2025675 PMAQI
2nd Oct 2025666 PMAQI
2nd Oct 2025637 PMAQI
2nd Oct 2025618 PMAQI
2nd Oct 2025609 PMAQI
2nd Oct 20255510 PMAQI
2nd Oct 20255111 PMAQI
3rd Oct 20255112 AMAQI
3rd Oct 2025491 AMAQI
3rd Oct 2025452 AMAQI
3rd Oct 2025443 AMAQI
3rd Oct 2025424 AMAQI
3rd Oct 2025425 AMAQI
3rd Oct 2025396 AMAQI

15°C12/19°C

3rd Oct 2025367 AMAQI
3rd Oct 2025368 AMAQI
3rd Oct 2025369 AMAQI
3rd Oct 20253710 AMAQI
3rd Oct 20253911 AMAQI
3rd Oct 20254412 PMAQI
3rd Oct 2025391 PMAQI
3rd Oct 2025512 PMAQI
3rd Oct 2025513 PMAQI
3rd Oct 2025514 PMAQI
3rd Oct 2025515 PMAQI
3rd Oct 2025506 PMAQI
3rd Oct 2025507 PMAQI
3rd Oct 2025478 PMAQI
3rd Oct 2025429 PMAQI
3rd Oct 20254310 PMAQI
3rd Oct 20254111 PMAQI
4th Oct 20253912 AMAQI
4th Oct 2025401 AMAQI
4th Oct 2025422 AMAQI
4th Oct 2025443 AMAQI
4th Oct 2025514 AMAQI
4th Oct 2025495 AMAQI
4th Oct 2025476 AMAQI

14°C13/15°C

4th Oct 2025227 AMAQI
4th Oct 2025378 AMAQI
4th Oct 2025349 AMAQI
4th Oct 20253410 AMAQI
4th Oct 20253711 AMAQI
4th Oct 20254212 PMAQI
4th Oct 2025461 PMAQI
4th Oct 2025522 PMAQI
4th Oct 2025513 PMAQI
4th Oct 2025504 PMAQI
4th Oct 2025565 PMAQI
4th Oct 2025596 PMAQI
4th Oct 2025577 PMAQI
4th Oct 2025608 PMAQI
4th Oct 2025629 PMAQI
4th Oct 20255710 PMAQI
4th Oct 20255111 PMAQI
5th Oct 20255112 AMAQI
5th Oct 2025501 AMAQI
5th Oct 2025502 AMAQI
5th Oct 2025503 AMAQI
5th Oct 2025514 AMAQI
5th Oct 2025565 AMAQI
5th Oct 2025566 AMAQI

15°C13/15°C

5th Oct 2025517 AMAQI
5th Oct 2025448 AMAQI
5th Oct 2025489 AMAQI
5th Oct 20255210 AMAQI
5th Oct 20255411 AMAQI
5th Oct 20255612 PMAQI
5th Oct 2025561 PMAQI
5th Oct 2025572 PMAQI
5th Oct 2025603 PMAQI
5th Oct 2025604 PMAQI
5th Oct 2025605 PMAQI
5th Oct 2025606 PMAQI
5th Oct 2025667 PMAQI
5th Oct 2025688 PMAQI
5th Oct 2025669 PMAQI
5th Oct 20255610 PMAQI
5th Oct 20255511 PMAQI
6th Oct 20255512 AMAQI
6th Oct 2025431 AMAQI
6th Oct 2025622 AMAQI
6th Oct 2025683 AMAQI
6th Oct 2025474 AMAQI
6th Oct 2025385 AMAQI
6th Oct 2025456 AMAQI

14°C13/16°C

6th Oct 2025477 AMAQI
6th Oct 2025458 AMAQI
6th Oct 2025499 AMAQI
6th Oct 20254710 AMAQI
6th Oct 20254811 AMAQI
6th Oct 20256512 PMAQI
6th Oct 2025581 PMAQI
6th Oct 2025522 PMAQI
6th Oct 2025503 PMAQI
6th Oct 2025484 PMAQI
6th Oct 2025475 PMAQI
6th Oct 2025446 PMAQI
6th Oct 2025397 PMAQI

15°C13/17°C

7th Oct 2025371 PMAQI
7th Oct 2025482 PMAQI
7th Oct 2025603 PMAQI
7th Oct 2025604 PMAQI
7th Oct 2025515 PMAQI
7th Oct 2025486 PMAQI
7th Oct 2025487 PMAQI
7th Oct 2025478 PMAQI
7th Oct 2025519 PMAQI
7th Oct 20255210 PMAQI
7th Oct 20255211 PMAQI
8th Oct 20255512 AMAQI
8th Oct 2025551 AMAQI
8th Oct 2025562 AMAQI
8th Oct 2025563 AMAQI
8th Oct 2025554 AMAQI
8th Oct 2025525 AMAQI
8th Oct 2025526 AMAQI

16°C14/18°C

8th Oct 2025537 AMAQI
8th Oct 2025538 AMAQI
8th Oct 2025509 AMAQI
8th Oct 20254910 AMAQI
8th Oct 20255511 AMAQI
8th Oct 20255712 PMAQI
8th Oct 2025571 PMAQI
8th Oct 2025622 PMAQI
8th Oct 2025663 PMAQI
8th Oct 2025624 PMAQI
8th Oct 2025585 PMAQI
8th Oct 2025546 PMAQI
8th Oct 2025537 PMAQI
8th Oct 2025538 PMAQI
8th Oct 2025519 PMAQI
8th Oct 20255610 PMAQI
8th Oct 20253911 PMAQI
9th Oct 20254312 AMAQI
9th Oct 2025551 AMAQI
9th Oct 2025612 AMAQI
9th Oct 2025603 AMAQI
9th Oct 2025494 AMAQI
9th Oct 2025475 AMAQI
9th Oct 2025466 AMAQI

14°C13/16°C

9th Oct 2025457 AMAQI
9th Oct 2025458 AMAQI
9th Oct 2025329 AMAQI
9th Oct 20255610 AMAQI
9th Oct 20256211 AMAQI
9th Oct 20255812 PMAQI
9th Oct 2025581 PMAQI
9th Oct 2025562 PMAQI
9th Oct 2025553 PMAQI
9th Oct 2025574 PMAQI
9th Oct 2025555 PMAQI
9th Oct 2025556 PMAQI
9th Oct 2025587 PMAQI
9th Oct 2025578 PMAQI
9th Oct 2025599 PMAQI
9th Oct 20255410 PMAQI
9th Oct 20255611 PMAQI
10th Oct 20256712 AMAQI
10th Oct 2025631 AMAQI
10th Oct 2025612 AMAQI
10th Oct 2025593 AMAQI
10th Oct 2025594 AMAQI
10th Oct 2025585 AMAQI
10th Oct 2025556 AMAQI

14°C13/15°C

10th Oct 2025577 AMAQI
10th Oct 2025568 AMAQI
10th Oct 2025599 AMAQI
10th Oct 20256410 AMAQI
10th Oct 20256311 AMAQI
10th Oct 20256612 PMAQI
10th Oct 2025661 PMAQI
10th Oct 2025672 PMAQI
10th Oct 2025693 PMAQI
10th Oct 2025694 PMAQI
10th Oct 2025725 PMAQI
10th Oct 2025706 PMAQI
10th Oct 2025677 PMAQI
10th Oct 2025668 PMAQI
10th Oct 2025719 PMAQI
10th Oct 20257210 PMAQI
10th Oct 20257811 PMAQI
11th Oct 20257612 AMAQI
11th Oct 2025841 AMAQI
11th Oct 2025862 AMAQI
11th Oct 2025833 AMAQI
11th Oct 2025734 AMAQI
11th Oct 2025835 AMAQI
11th Oct 2025826 AMAQI

15°C14/16°C

11th Oct 2025817 AMAQI
7 AM
11th Oct 2025808 AMAQI
11th Oct 2025829 AMAQI
11th Oct 20258410 AMAQI
11th Oct 20258511 AMAQI
11th Oct 20258712 PMAQI
11th Oct 2025901 PMAQI
1 PM
11th Oct 2025892 PMAQI
11th Oct 2025873 PMAQI
11th Oct 2025864 PMAQI
7 PM
1 AM
6 AM

--°C/°C

Day time
Avg. Highest Time
12 PM - 4 PM

42AQI

5 hours / Day
150 hours / Month
Avg. Lowest Time
7 AM - 9 AM

37AQI

3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 PM to 4 PM (Avg. 42), while the lowest AQI was between 7 AM to 9 AM (Avg. 37).
Night time
Avg. Highest Time
12 AM - 3 AM

38AQI

4 hours / Day
120 hours / Month
Avg. Lowest Time
4 AM - 11 PM

36AQI

7 hours / Day
210 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 3 AM (Avg. 38), while the lowest AQI was between 4 AM to 11 PM (Avg. 36).

2025 Days Vs Air Quality

Grande Synthe, Hauts De France, France

2025

70%

198

27%

75

4%

10

Total number of days with different AQI categories in last 284 days in 2025 (81 days remaining)

Good
198 Days
Moderate
75 Days
Poor
10 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 70%

Health Risk Level:

Low

In 2025, 70% of 284 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

Grande Synthe, Hauts De France, France

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
34AQI
2nd January 2025
28AQI
3rd January 2025
31AQI
4th January 2025
51AQI
5th January 2025
36AQI
6th January 2025
26AQI
7th January 2025
26AQI
8th January 2025
38AQI
9th January 2025
31AQI
10th January 2025
63AQI
11th January 2025
78AQI
12th January 2025
56AQI
13th January 2025
88AQI
14th January 2025
88AQI
15th January 2025
81AQI
16th January 2025
75AQI
17th January 2025
79AQI
18th January 2025
76AQI
19th January 2025
82AQI
20th January 2025
101AQI
21st January 2025
85AQI
22nd January 2025
96AQI
23rd January 2025
58AQI
24th January 2025
42AQI
25th January 2025
37AQI
26th January 2025
33AQI
27th January 2025
30AQI
28th January 2025
31AQI
29th January 2025
30AQI
30th January 2025
31AQI
31st January 2025
38AQI
1st February 2025
63AQI
2nd February 2025
82AQI
3rd February 2025
97AQI
4th February 2025
73AQI
5th February 2025
65AQI
6th February 2025
58AQI
7th February 2025
56AQI
8th February 2025
67AQI
9th February 2025
49AQI
10th February 2025
117AQI
11th February 2025
120AQI
12th February 2025
77AQI
13th February 2025
79AQI
14th February 2025
102AQI
15th February 2025
103AQI
16th February 2025
78AQI
17th February 2025
75AQI
18th February 2025
84AQI
19th February 2025
89AQI
20th February 2025
75AQI
21st February 2025
57AQI
22nd February 2025
53AQI
23rd February 2025
47AQI
24th February 2025
31AQI
25th February 2025
47AQI
26th February 2025
37AQI
27th February 2025
29AQI
28th February 2025
39AQI
1st March 2025
38AQI
2nd March 2025
76AQI
3rd March 2025
114AQI
4th March 2025
127AQI
5th March 2025
126AQI
6th March 2025
96AQI
7th March 2025
58AQI
8th March 2025
69AQI
9th March 2025
91AQI
10th March 2025
139AQI
11th March 2025
82AQI
12th March 2025
43AQI
13th March 2025
30AQI
14th March 2025
31AQI
15th March 2025
40AQI
16th March 2025
44AQI
17th March 2025
40AQI
18th March 2025
45AQI
19th March 2025
78AQI
20th March 2025
79AQI
21st March 2025
61AQI
22nd March 2025
48AQI
23rd March 2025
45AQI
24th March 2025
92AQI
25th March 2025
107AQI
26th March 2025
53AQI
27th March 2025
66AQI
28th March 2025
54AQI
29th March 2025
37AQI
30th March 2025
41AQI
31st March 2025
30AQI
1st April 2025
45AQI
2nd April 2025
51AQI
3rd April 2025
56AQI
4th April 2025
71AQI
5th April 2025
64AQI
6th April 2025
41AQI
7th April 2025
37AQI
8th April 2025
55AQI
9th April 2025
35AQI
10th April 2025
28AQI
11th April 2025
58AQI
12th April 2025
72AQI
13th April 2025
46AQI
14th April 2025
33AQI
15th April 2025
54AQI
16th April 2025
21AQI
17th April 2025
41AQI
18th April 2025
41AQI
19th April 2025
47AQI
20th April 2025
45AQI
21st April 2025
64AQI
22nd April 2025
45AQI
23rd April 2025
23AQI
24th April 2025
58AQI
25th April 2025
45AQI
26th April 2025
63AQI
27th April 2025
51AQI
28th April 2025
53AQI
29th April 2025
62AQI
30th April 2025
62AQI
1st May 2025
78AQI
2nd May 2025
71AQI
3rd May 2025
51AQI
4th May 2025
24AQI
5th May 2025
27AQI
6th May 2025
23AQI
7th May 2025
26AQI
8th May 2025
37AQI
9th May 2025
35AQI
10th May 2025
39AQI
11th May 2025
34AQI
12th May 2025
40AQI
13th May 2025
50AQI
14th May 2025
55AQI
15th May 2025
49AQI
16th May 2025
42AQI
17th May 2025
40AQI
18th May 2025
46AQI
19th May 2025
45AQI
20th May 2025
35AQI
21st May 2025
50AQI
22nd May 2025
37AQI
23rd May 2025
30AQI
24th May 2025
30AQI
25th May 2025
27AQI
26th May 2025
34AQI
27th May 2025
25AQI
28th May 2025
29AQI
29th May 2025
33AQI
30th May 2025
22AQI
31st May 2025
34AQI
1st June 2025
36AQI
2nd June 2025
29AQI
3rd June 2025
26AQI
4th June 2025
22AQI
5th June 2025
20AQI
6th June 2025
23AQI
7th June 2025
19AQI
8th June 2025
21AQI
9th June 2025
50AQI
10th June 2025
52AQI
11th June 2025
43AQI
12th June 2025
49AQI
13th June 2025
56AQI
14th June 2025
50AQI
15th June 2025
36AQI
16th June 2025
38AQI
17th June 2025
38AQI
18th June 2025
39AQI
19th June 2025
44AQI
20th June 2025
44AQI
21st June 2025
39AQI
22nd June 2025
36AQI
23rd June 2025
30AQI
24th June 2025
32AQI
25th June 2025
27AQI
26th June 2025
29AQI
27th June 2025
29AQI
28th June 2025
20AQI
29th June 2025
22AQI
30th June 2025
33AQI
1st July 2025
48AQI
2nd July 2025
50AQI
3rd July 2025
32AQI
4th July 2025
26AQI
5th July 2025
24AQI
6th July 2025
19AQI
7th July 2025
22AQI
8th July 2025
28AQI
9th July 2025
31AQI
10th July 2025
32AQI
11th July 2025
30AQI
12th July 2025
25AQI
13th July 2025
30AQI
14th July 2025
46AQI
15th July 2025
37AQI
16th July 2025
35AQI
17th July 2025
35AQI
18th July 2025
38AQI
19th July 2025
43AQI
20th July 2025
26AQI
21st July 2025
21AQI
22nd July 2025
22AQI
23rd July 2025
26AQI
24th July 2025
39AQI
25th July 2025
31AQI
26th July 2025
46AQI
27th July 2025
30AQI
28th July 2025
31AQI
29th July 2025
40AQI
30th July 2025
34AQI
31st July 2025
27AQI
1st August 2025
22AQI
2nd August 2025
21AQI
3rd August 2025
23AQI
4th August 2025
24AQI
5th August 2025
23AQI
6th August 2025
26AQI
7th August 2025
29AQI
8th August 2025
34AQI
9th August 2025
35AQI
10th August 2025
41AQI
11th August 2025
49AQI
12th August 2025
50AQI
13th August 2025
58AQI
14th August 2025
56AQI
15th August 2025
38AQI
16th August 2025
46AQI
17th August 2025
34AQI
18th August 2025
27AQI
19th August 2025
28AQI
20th August 2025
29AQI
21st August 2025
25AQI
22nd August 2025
20AQI
23rd August 2025
22AQI
24th August 2025
22AQI
25th August 2025
26AQI
26th August 2025
32AQI
27th August 2025
30AQI
28th August 2025
28AQI
29th August 2025
23AQI
30th August 2025
22AQI
31st August 2025
21AQI
1st September 2025
23AQI
2nd September 2025
19AQI
3rd September 2025
18AQI
4th September 2025
20AQI
5th September 2025
20AQI
6th September 2025
20AQI
7th September 2025
22AQI
8th September 2025
23AQI
9th September 2025
21AQI
10th September 2025
23AQI
11th September 2025
21AQI
12th September 2025
20AQI
13th September 2025
17AQI
14th September 2025
18AQI
15th September 2025
28AQI
16th September 2025
28AQI
17th September 2025
23AQI
18th September 2025
18AQI
19th September 2025
20AQI
20th September 2025
34AQI
21st September 2025
23AQI
22nd September 2025
22AQI
23rd September 2025
18AQI
24th September 2025
19AQI
25th September 2025
24AQI
26th September 2025
40AQI
27th September 2025
58AQI
28th September 2025
55AQI
29th September 2025
49AQI
30th September 2025
29AQI
1st October 2025
44AQI
2nd October 2025
82AQI
3rd October 2025
45AQI
4th October 2025
47AQI
5th October 2025
54AQI
6th October 2025
49AQI
7th October 2025
51AQI
8th October 2025
54AQI
9th October 2025
54AQI
10th October 2025
64AQI
11th October 2025
12th October 2025
13th October 2025
14th October 2025
15th October 2025
16th October 2025
17th October 2025
18th October 2025
19th October 2025
20th October 2025
21st October 2025
22nd October 2025
23rd October 2025
24th October 2025
25th October 2025
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
5th November 2025
6th November 2025
7th November 2025
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
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

54AQI

70AQI

67AQI

49AQI

39AQI

34AQI

32AQI

31AQI

26AQI

54AQI

No. of days

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

202545AQI

16
14
1
7
17
4
13
13
5
15
15
27
4
28
2
31
29
2
28
2
4
6
198
75
10

Highest AQI recorded in

February

70AQI

Lowest AQI recorded in

September

26AQI

202440AQI

20
11
26
3
22
9
30
20
11
26
4
30
1
28
3
23
6
1
27
4
17
13
24
7
293
72
1

Highest AQI recorded in

November

49AQI

Lowest AQI recorded in

July

31AQI

202342AQI

23
7
1
14
9
4
1
27
4
15
15
16
15
18
12
27
2
29
2
21
8
1
28
3
26
2
1
23
8
267
87
7
1

Highest AQI recorded in

February

64AQI

Lowest AQI recorded in

August

31AQI

202242AQI

20
10
1
19
2
7
17
5
1
17
13
25
5
23
1
24
1
4
27
2
31
24
6
15
15
1
236
72
7
1

Highest AQI recorded in

March

75AQI

Lowest AQI recorded in

August

27AQI

202140AQI

18
22
6
22
8
1
25
3
28
3
15
7
3
4
27
4
31
15
13
27
4
24
6
24
7
278
61
4
4

Highest AQI recorded in

June

69AQI

Lowest AQI recorded in

January

26AQI

202027AQI

13
20
1
18
30
31
28
3
28
30
21
9
16
2
235
15

Highest AQI recorded in

November

38AQI

Lowest AQI recorded in

July

18AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2025(Avg.)
45AQI
Least Polluted Year Recorded
2020(Avg.)
27AQI

Grande Synthe's annual 2025 AQI (45) shows an average percentage change of 20.6% (worsened AQI) compared to previous years: 2020 (27), 2021 (40), 2022 (42), 2023 (42), 2024 (40).