Mardyck, 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!
October Air Quality Analysis
Mardyck, Grande Synthe, Hauts De France, France
AQI Trends: Highest and Lowest
Same Day Analysis (11th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 78 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 11th Oct - 12th Oct 2025
Mardyck, Grande Synthe, Hauts De France, France
7 AM11th Oct 2025
7 PM
6 AM12th Oct 2025
98AQI
72AQI
99AQI
56AQI
In the last 24 hours,
Mardyck's AQI reached its highest point of 99 at 8 PM during the Night, while the lowest point, undefined, was recorded at 6 AM during the Night between 11th Oct and 12th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Mardyck, Grande Synthe, Hauts De France, France
15°C14/18°C
15°C13/17°C
16°C13/19°C
17°C15/18°C
16°C15/18°C
16°C14/20°C
19°C17/21°C
20°C16/26°C
19°C16/21°C
14°C13/15°C
14°C14/16°C
14°C13/16°C
15°C13/16°C
14°C13/15°C
13°C11/16°C
14°C11/17°C
14°C11/18°C
15°C14/16°C
15°C14/16°C
14°C12/17°C
15°C12/19°C
14°C13/15°C
15°C13/15°C
14°C13/16°C
15°C13/17°C
16°C14/18°C
14°C13/16°C
14°C13/15°C
15°C14/16°C
15°C13/16°C
--°C/°C
45AQI
38AQI
40AQI
38AQI
2025 Days Vs Air Quality
Mardyck, Grande Synthe, Hauts De France, France
70%
198
27%
76
4%
10
Total number of days with different AQI categories in last 285 days in 2025 (80 days remaining)
Under WHO’s Safe Air Quality Limits: 70%
Health Risk Level:
Low
In 2025, 70% of 285 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
Mardyck, Grande Synthe, Hauts De France, France
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
33AQI
27AQI
30AQI
50AQI
36AQI
25AQI
25AQI
40AQI
31AQI
63AQI
82AQI
52AQI
86AQI
88AQI
79AQI
75AQI
79AQI
75AQI
80AQI
101AQI
85AQI
96AQI
59AQI
41AQI
37AQI
32AQI
30AQI
31AQI
29AQI
30AQI
40AQI
64AQI
82AQI
96AQI
75AQI
65AQI
57AQI
55AQI
66AQI
49AQI
116AQI
121AQI
79AQI
80AQI
105AQI
114AQI
78AQI
74AQI
83AQI
89AQI
72AQI
56AQI
53AQI
47AQI
30AQI
45AQI
39AQI
29AQI
39AQI
37AQI
76AQI
113AQI
129AQI
126AQI
96AQI
58AQI
68AQI
92AQI
139AQI
84AQI
41AQI
28AQI
30AQI
38AQI
43AQI
40AQI
44AQI
76AQI
78AQI
61AQI
48AQI
44AQI
93AQI
109AQI
52AQI
65AQI
54AQI
37AQI
41AQI
29AQI
46AQI
52AQI
56AQI
72AQI
65AQI
42AQI
37AQI
54AQI
34AQI
27AQI
58AQI
72AQI
46AQI
32AQI
55AQI
21AQI
42AQI
41AQI
46AQI
48AQI
66AQI
46AQI
22AQI
58AQI
44AQI
63AQI
51AQI
53AQI
63AQI
62AQI
78AQI
71AQI
50AQI
25AQI
27AQI
23AQI
24AQI
35AQI
35AQI
40AQI
32AQI
40AQI
49AQI
56AQI
49AQI
42AQI
40AQI
46AQI
45AQI
35AQI
51AQI
37AQI
30AQI
29AQI
27AQI
33AQI
25AQI
28AQI
33AQI
22AQI
33AQI
35AQI
28AQI
27AQI
22AQI
20AQI
24AQI
19AQI
21AQI
49AQI
49AQI
43AQI
49AQI
56AQI
50AQI
35AQI
38AQI
39AQI
39AQI
46AQI
45AQI
39AQI
37AQI
29AQI
32AQI
26AQI
29AQI
30AQI
19AQI
22AQI
35AQI
49AQI
51AQI
31AQI
25AQI
24AQI
19AQI
22AQI
27AQI
29AQI
32AQI
30AQI
25AQI
31AQI
49AQI
35AQI
36AQI
36AQI
40AQI
42AQI
25AQI
20AQI
21AQI
25AQI
38AQI
31AQI
46AQI
29AQI
32AQI
40AQI
34AQI
26AQI
22AQI
21AQI
24AQI
24AQI
23AQI
27AQI
29AQI
33AQI
34AQI
42AQI
49AQI
49AQI
58AQI
56AQI
37AQI
45AQI
33AQI
26AQI
27AQI
28AQI
25AQI
20AQI
22AQI
22AQI
26AQI
32AQI
30AQI
28AQI
22AQI
22AQI
21AQI
23AQI
19AQI
18AQI
20AQI
20AQI
21AQI
22AQI
23AQI
21AQI
23AQI
21AQI
20AQI
17AQI
19AQI
28AQI
28AQI
24AQI
19AQI
21AQI
34AQI
24AQI
23AQI
19AQI
20AQI
25AQI
41AQI
61AQI
58AQI
55AQI
32AQI
48AQI
82AQI
45AQI
47AQI
55AQI
47AQI
52AQI
56AQI
54AQI
67AQI
78AQI
54AQI
70AQI
67AQI
49AQI
38AQI
34AQI
32AQI
31AQI
27AQI
57AQI
No. of days
202545AQI
Highest AQI recorded in
February70AQI
Lowest AQI recorded in
September27AQI
202439AQI
Highest AQI recorded in
November49AQI
Lowest AQI recorded in
July30AQI
202342AQI
Highest AQI recorded in
February63AQI
Lowest AQI recorded in
July31AQI
202241AQI
Highest AQI recorded in
March74AQI
Lowest AQI recorded in
June28AQI
202139AQI
Highest AQI recorded in
June68AQI
Lowest AQI recorded in
January26AQI
202029AQI
Highest AQI recorded in
April41AQI
Lowest AQI recorded in
July18AQI
Most & Least Polluted Years Over the Last 6 Years
Mardyck's annual 2025 AQI (45) shows an average percentage change of 20.2% (worsened AQI) compared to previous years: 2020 (29), 2021 (39), 2022 (41), 2023 (42), 2024 (39).