Rouen, Normandie, 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
Rouen, Normandie, France
AQI Trends: Highest and Lowest
Same Day Analysis (15th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 53 of Moderate air quality, showing improvement over 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 15th Oct - 16th Oct 2025
Rouen, Normandie, France
7 AM15th Oct 2025
7 PM
6 AM16th Oct 2025
57AQI
12AQI
73AQI
52AQI
In the last 24 hours,
Rouen's AQI reached its highest point of 73 at 12 AM during the Night, while the lowest point, 12, was recorded at 3 PM during the Day between 15th Oct and 16th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Rouen, Normandie, France
15°C11/20°C
18°C13/26°C
18°C12/27°C
21°C12/32°C
20°C14/24°C
14°C10/18°C
13°C9/18°C
13°C8/19°C
11°C8/16°C
11°C6/15°C
10°C5/14°C
12°C6/19°C
13°C7/20°C
13°C9/19°C
13°C7/20°C
13°C7/20°C
14°C8/20°C
13°C10/15°C
15°C12/16°C
13°C11/16°C
12°C8/17°C
14°C9/21°C
13°C8/19°C
14°C9/19°C
13°C8/20°C
13°C7/21°C
13°C8/20°C
13°C9/18°C
13°C8/18°C
14°C10/16°C
--°C/°C
46AQI
41AQI
45AQI
45AQI
2025 Days Vs Air Quality
Rouen, Normandie, France
75%
215
25%
72
0.3%
1
Total number of days with different AQI categories in last 289 days in 2025 (76 days remaining)
Under WHO’s Safe Air Quality Limits: 75%
Health Risk Level:
Low
In 2025, 75% of 289 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
Rouen, Normandie, France
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
43AQI
46AQI
65AQI
68AQI
42AQI
38AQI
31AQI
37AQI
32AQI
44AQI
65AQI
73AQI
80AQI
96AQI
128AQI
68AQI
72AQI
67AQI
62AQI
74AQI
81AQI
83AQI
53AQI
35AQI
37AQI
29AQI
27AQI
31AQI
30AQI
32AQI
47AQI
49AQI
70AQI
94AQI
65AQI
60AQI
64AQI
58AQI
52AQI
44AQI
61AQI
67AQI
68AQI
68AQI
99AQI
97AQI
77AQI
72AQI
77AQI
86AQI
65AQI
59AQI
50AQI
46AQI
32AQI
46AQI
34AQI
31AQI
49AQI
52AQI
60AQI
70AQI
89AQI
98AQI
63AQI
44AQI
53AQI
53AQI
56AQI
71AQI
44AQI
44AQI
48AQI
46AQI
47AQI
47AQI
44AQI
46AQI
48AQI
51AQI
49AQI
47AQI
48AQI
50AQI
50AQI
50AQI
48AQI
44AQI
42AQI
41AQI
44AQI
34AQI
44AQI
40AQI
50AQI
40AQI
31AQI
51AQI
54AQI
52AQI
49AQI
47AQI
43AQI
30AQI
30AQI
22AQI
29AQI
30AQI
28AQI
29AQI
29AQI
38AQI
25AQI
43AQI
51AQI
55AQI
58AQI
55AQI
55AQI
55AQI
55AQI
54AQI
56AQI
49AQI
39AQI
26AQI
26AQI
42AQI
38AQI
32AQI
26AQI
26AQI
29AQI
41AQI
43AQI
39AQI
41AQI
43AQI
41AQI
34AQI
34AQI
40AQI
27AQI
30AQI
21AQI
28AQI
24AQI
27AQI
27AQI
29AQI
26AQI
34AQI
33AQI
34AQI
24AQI
20AQI
19AQI
18AQI
21AQI
26AQI
31AQI
24AQI
27AQI
27AQI
25AQI
28AQI
32AQI
33AQI
33AQI
41AQI
44AQI
39AQI
40AQI
28AQI
32AQI
30AQI
30AQI
24AQI
21AQI
21AQI
28AQI
40AQI
38AQI
31AQI
24AQI
24AQI
18AQI
19AQI
24AQI
28AQI
31AQI
30AQI
28AQI
32AQI
29AQI
27AQI
24AQI
20AQI
21AQI
23AQI
20AQI
19AQI
19AQI
19AQI
35AQI
23AQI
32AQI
23AQI
34AQI
34AQI
24AQI
26AQI
22AQI
21AQI
22AQI
23AQI
24AQI
26AQI
29AQI
36AQI
33AQI
28AQI
46AQI
51AQI
56AQI
56AQI
40AQI
43AQI
40AQI
29AQI
33AQI
41AQI
43AQI
30AQI
26AQI
29AQI
29AQI
31AQI
30AQI
27AQI
23AQI
22AQI
21AQI
23AQI
21AQI
19AQI
20AQI
21AQI
20AQI
23AQI
26AQI
26AQI
22AQI
22AQI
20AQI
18AQI
19AQI
23AQI
27AQI
22AQI
22AQI
24AQI
34AQI
27AQI
21AQI
19AQI
18AQI
34AQI
52AQI
36AQI
31AQI
34AQI
29AQI
48AQI
63AQI
51AQI
37AQI
45AQI
53AQI
57AQI
71AQI
54AQI
59AQI
63AQI
86AQI
70AQI
58AQI
53AQI
55AQI
62AQI
53AQI
41AQI
35AQI
29AQI
26AQI
33AQI
25AQI
58AQI
No. of days
202541AQI
Highest AQI recorded in
February62AQI
Lowest AQI recorded in
September25AQI
202436AQI
Highest AQI recorded in
January56AQI
Lowest AQI recorded in
July26AQI
202337AQI
Highest AQI recorded in
February60AQI
Lowest AQI recorded in
August23AQI
202243AQI
Highest AQI recorded in
March65AQI
Lowest AQI recorded in
November28AQI
202144AQI
Highest AQI recorded in
January59AQI
Lowest AQI recorded in
August31AQI
202036AQI
Highest AQI recorded in
March54AQI
Lowest AQI recorded in
July26AQI
Most & Least Polluted Years Over the Last 6 Years
Rouen's annual 2025 AQI (41) shows an average percentage change of 5.3% (worsened AQI) compared to previous years: 2020 (36), 2021 (44), 2022 (43), 2023 (37), 2024 (36).