37AQI
Hi, Know the Air Quality around you
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
My Current Location
Boulogne Sur Mer, Hauts De France, FranceReal-Time Air Quality Index (AQI) Analysis
Good
Good
Good
Good
Take control of the air you breatheOwn An AQI Monitor

Health Advice
Boulogne Sur Mer, Hauts De France, France
0Cigarettes per day
Breathe easy and get active! The air quality is perfect for enjoying outdoor activities.29 May 2025
Source:
Berkeley Earth
Asthma
Low Chances of Asthma
Risk of Asthma symptoms is Low when AQI is Good (0-50)
- Asthma
- Heart Issues
- Allergies
- Sinus
- Cold/Flu
- Chronic (COPD)
You may not experience any symptoms.
Do's :
Stay hydrated and keep your airways moist.
Check the air quality of your area every time.
Don'ts :
Skip medications prescribed by your doctor.
Visit outdoors in the early morning during high pollen.
Note: This is general advice. Please consult your doctor for personalized care and not rely solely on the above recommendations.
May Air Quality Analysis
Boulogne Sur Mer, Hauts De France, France
AQI Trends: Highest and Lowest
Same Day Analysis (27th May ):
On this day, AQI across the 5 years varied significantly: 2025 ranks the most lowest AQI at 29 of Good air quality, showing improvement over 2024, 2023, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 28th May - 29th May 2025
Boulogne Sur Mer, Hauts De France, France
6 AM28th May 2025
9 PM
5 AM29th May 2025
39AQI
21AQI
40AQI
33AQI
In the last 24 hours,
Boulogne Sur Mer's AQI reached its highest point of 40 at 2 AM during the Night, while the lowest point, 21, was recorded at 9 AM during the Day between 28th May and 29th May 2025.
Day & Night AQI Trend : Apr - May 2025
Boulogne Sur Mer, Hauts De France, France
15°C9/22°C
17°C11/24°C
19°C12/26°C
17°C12/21°C
13°C8/18°C
9°C4/12°C
9°C4/12°C
10°C5/15°C
10°C6/15°C
11°C7/16°C
12°C6/18°C
13°C7/19°C
15°C9/22°C
14°C11/18°C
15°C10/21°C
15°C8/22°C
10°C6/13°C
11°C6/17°C
12°C7/18°C
12°C6/17°C
13°C7/20°C
14°C9/22°C
12°C8/17°C
10°C5/16°C
10°C3/15°C
13°C8/16°C
15°C12/18°C
13°C9/17°C
14°C12/16°C
15°C11/18°C
N/A°C/°C
39AQI
35AQI
38AQI
35AQI
2025 Days Vs Air Quality
Boulogne Sur Mer, Hauts De France, France
59%
86
41%
61
Total number of days with different AQI categories in last 149 days in 2025 (216 days remaining)
Under WHO’s Safe Air Quality Limits: 59%
Health Risk Level:
Considerable
In 2025, 59% of 149 days were within WHO’s safe air quality limits, and 41% exceeded them. The risk of health issues is Considerable, with potential for conditions in sensitive individuals.
Annual Air Quality Insights
Boulogne Sur Mer, Hauts De France, France
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
41AQI
36AQI
45AQI
54AQI
35AQI
29AQI
28AQI
30AQI
31AQI
51AQI
66AQI
63AQI
63AQI
68AQI
71AQI
60AQI
62AQI
61AQI
69AQI
72AQI
66AQI
70AQI
51AQI
39AQI
34AQI
33AQI
31AQI
34AQI
31AQI
32AQI
40AQI
50AQI
67AQI
78AQI
56AQI
54AQI
60AQI
51AQI
54AQI
44AQI
87AQI
84AQI
63AQI
67AQI
77AQI
73AQI
66AQI
65AQI
71AQI
72AQI
57AQI
50AQI
45AQI
39AQI
32AQI
41AQI
33AQI
29AQI
39AQI
49AQI
65AQI
81AQI
85AQI
84AQI
67AQI
48AQI
55AQI
62AQI
90AQI
76AQI
41AQI
42AQI
38AQI
42AQI
53AQI
47AQI
47AQI
50AQI
51AQI
54AQI
42AQI
41AQI
78AQI
97AQI
71AQI
61AQI
55AQI
39AQI
44AQI
45AQI
41AQI
42AQI
49AQI
50AQI
54AQI
39AQI
37AQI
49AQI
52AQI
48AQI
52AQI
52AQI
44AQI
36AQI
42AQI
24AQI
34AQI
39AQI
40AQI
46AQI
49AQI
36AQI
23AQI
46AQI
52AQI
61AQI
60AQI
50AQI
53AQI
55AQI
52AQI
50AQI
58AQI
28AQI
28AQI
28AQI
30AQI
39AQI
37AQI
31AQI
32AQI
29AQI
39AQI
46AQI
42AQI
37AQI
38AQI
43AQI
44AQI
34AQI
37AQI
36AQI
27AQI
31AQI
27AQI
32AQI
29AQI
48AQI
57AQI
58AQI
45AQI
36AQI
No. of days
202549AQI
Highest AQI recorded in
March58AQI
Lowest AQI recorded in
May36AQI
202442AQI
Highest AQI recorded in
March51AQI
Lowest AQI recorded in
July35AQI
202346AQI
Highest AQI recorded in
September49AQI
Lowest AQI recorded in
November41AQI
202246AQI
Highest AQI recorded in
March73AQI
Lowest AQI recorded in
February33AQI
202141AQI
Highest AQI recorded in
September51AQI
Lowest AQI recorded in
August30AQI
202029AQI
Highest AQI recorded in
November47AQI
Lowest AQI recorded in
July20AQI
Most & Least Polluted Years Over the Last 6 Years
Boulogne Sur Mer's annual 2025 AQI (49) shows an average percentage change of 24.5% (worsened AQI) compared to previous years: 2020 (29), 2021 (41), 2022 (46), 2023 (46), 2024 (42).