Triangle, Rennes, Bretagne, France Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Triangle, Rennes, Bretagne, France
AQI Trends: Highest and Lowest
Same Day Analysis (2nd August ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 2nd highest AQI at 21 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 3rd Aug - 4th Aug 2025
Triangle, Rennes, Bretagne, France
6 AM3rd Aug 2025
9 PM
5 AM4th Aug 2025
AQI
AQI
24AQI
18AQI
In the last 24 hours,
Triangle's AQI reached its highest point of 24 at 6 PM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 3rd Aug and 4th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Triangle, Rennes, Bretagne, France
19°C11/30°C
18°C14/23°C
17°C12/20°C
17°C10/25°C
18°C8/28°C
21°C12/30°C
24°C15/32°C
26°C17/35°C
25°C17/34°C
20°C14/26°C
19°C12/27°C
20°C15/27°C
23°C15/33°C
21°C15/30°C
19°C17/25°C
17°C15/19°C
18°C14/24°C
17°C12/22°C
17°C13/21°C
18°C13/22°C
19°C13/26°C
18°C12/24°C
17°C13/23°C
18°C13/24°C
18°C12/25°C
19°C14/26°C
19°C13/28°C
18°C12/24°C
17°C11/24°C
--°C/°C
--°C/°C
27AQI
25AQI
25AQI
25AQI
2025 Days Vs Air Quality
Triangle, Rennes, Bretagne, France
76%
163
23%
50
0.4%
1
Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)
Under WHO’s Safe Air Quality Limits: 76%
Health Risk Level:
Low
In 2025, 76% of 215 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
Triangle, Rennes, Bretagne, France
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
36AQI
38AQI
46AQI
45AQI
33AQI
27AQI
29AQI
35AQI
30AQI
24AQI
48AQI
66AQI
63AQI
96AQI
116AQI
57AQI
72AQI
71AQI
57AQI
62AQI
58AQI
63AQI
39AQI
29AQI
27AQI
35AQI
27AQI
35AQI
29AQI
27AQI
43AQI
38AQI
66AQI
54AQI
40AQI
46AQI
50AQI
51AQI
45AQI
56AQI
36AQI
61AQI
67AQI
69AQI
65AQI
77AQI
78AQI
88AQI
84AQI
74AQI
35AQI
51AQI
33AQI
30AQI
31AQI
31AQI
28AQI
30AQI
41AQI
46AQI
57AQI
64AQI
79AQI
86AQI
57AQI
44AQI
34AQI
33AQI
41AQI
59AQI
36AQI
34AQI
41AQI
38AQI
64AQI
71AQI
59AQI
43AQI
31AQI
37AQI
22AQI
35AQI
49AQI
76AQI
58AQI
59AQI
43AQI
28AQI
26AQI
44AQI
36AQI
32AQI
28AQI
34AQI
36AQI
51AQI
33AQI
48AQI
66AQI
60AQI
55AQI
47AQI
37AQI
26AQI
29AQI
19AQI
20AQI
20AQI
21AQI
27AQI
34AQI
24AQI
19AQI
27AQI
52AQI
62AQI
73AQI
52AQI
37AQI
33AQI
34AQI
40AQI
45AQI
39AQI
19AQI
26AQI
30AQI
40AQI
38AQI
28AQI
19AQI
22AQI
23AQI
27AQI
42AQI
34AQI
39AQI
38AQI
38AQI
46AQI
40AQI
33AQI
33AQI
29AQI
19AQI
26AQI
26AQI
20AQI
20AQI
20AQI
22AQI
31AQI
24AQI
25AQI
19AQI
18AQI
18AQI
16AQI
23AQI
46AQI
58AQI
45AQI
51AQI
43AQI
35AQI
26AQI
28AQI
28AQI
32AQI
35AQI
43AQI
51AQI
55AQI
34AQI
30AQI
28AQI
23AQI
17AQI
15AQI
15AQI
21AQI
30AQI
25AQI
23AQI
20AQI
20AQI
18AQI
17AQI
20AQI
20AQI
23AQI
23AQI
24AQI
27AQI
28AQI
26AQI
36AQI
28AQI
24AQI
20AQI
21AQI
20AQI
18AQI
16AQI
33AQI
51AQI
53AQI
33AQI
33AQI
27AQI
21AQI
22AQI
21AQI
21AQI
47AQI
52AQI
48AQI
38AQI
31AQI
31AQI
26AQI
21AQI
No. of days
202539AQI
Highest AQI recorded in
February52AQI
Lowest AQI recorded in
August21AQI
202432AQI
Highest AQI recorded in
January44AQI
Lowest AQI recorded in
July23AQI
202337AQI
Highest AQI recorded in
November45AQI
Lowest AQI recorded in
December36AQI
202021AQI
Highest AQI recorded in
September21AQI
Lowest AQI recorded in
September21AQI
Most & Least Polluted Years Over the Last 4 Years
Triangle's annual 2025 AQI (39) shows an average percentage change of 36.4% (worsened AQI) compared to previous years: 2020 (21), 2023 (37), 2024 (32).