Caerdydd, Cardiff, United Kingdom Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
July Air Quality Analysis
Caerdydd, Cardiff, United Kingdom
AQI Trends: Highest and Lowest
Same Day Analysis (31st July ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 1st highest AQI at 41 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
2025 Days Vs Air Quality
Caerdydd, Cardiff, United Kingdom
82%
149
18%
32
Total number of days with different AQI categories in last 182 days in 2025 (183 days remaining)
Under WHO’s Safe Air Quality Limits: 82%
Health Risk Level:
Low
In 2025, 82% of 182 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
Caerdydd, Cardiff, United Kingdom
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
34AQI
43AQI
51AQI
52AQI
27AQI
27AQI
29AQI
44AQI
47AQI
51AQI
69AQI
70AQI
40AQI
44AQI
44AQI
60AQI
54AQI
58AQI
67AQI
64AQI
63AQI
63AQI
51AQI
51AQI
51AQI
49AQI
47AQI
30AQI
31AQI
32AQI
37AQI
46AQI
31AQI
41AQI
32AQI
39AQI
48AQI
37AQI
56AQI
73AQI
65AQI
63AQI
65AQI
68AQI
67AQI
73AQI
73AQI
71AQI
76AQI
80AQI
33AQI
37AQI
45AQI
36AQI
33AQI
33AQI
26AQI
28AQI
43AQI
43AQI
47AQI
39AQI
40AQI
48AQI
49AQI
38AQI
38AQI
53AQI
67AQI
42AQI
27AQI
24AQI
28AQI
25AQI
25AQI
21AQI
32AQI
45AQI
42AQI
40AQI
32AQI
36AQI
52AQI
32AQI
26AQI
22AQI
19AQI
21AQI
24AQI
28AQI
28AQI
28AQI
32AQI
41AQI
30AQI
20AQI
23AQI
30AQI
32AQI
31AQI
38AQI
35AQI
24AQI
17AQI
20AQI
17AQI
21AQI
20AQI
23AQI
23AQI
22AQI
17AQI
18AQI
27AQI
31AQI
29AQI
21AQI
21AQI
29AQI
34AQI
39AQI
32AQI
25AQI
20AQI
19AQI
21AQI
32AQI
25AQI
32AQI
37AQI
36AQI
36AQI
34AQI
38AQI
37AQI
36AQI
39AQI
43AQI
39AQI
36AQI
32AQI
34AQI
36AQI
28AQI
24AQI
25AQI
23AQI
25AQI
21AQI
22AQI
24AQI
29AQI
25AQI
26AQI
25AQI
19AQI
20AQI
17AQI
22AQI
57AQI
32AQI
32AQI
41AQI
37AQI
27AQI
31AQI
29AQI
28AQI
33AQI
42AQI
51AQI
44AQI
44AQI
22AQI
22AQI
16AQI
18AQI
20AQI
18AQI
22AQI
28AQI
48AQI
51AQI
36AQI
26AQI
31AQI
29AQI
No. of days
202537AQI
Highest AQI recorded in
February51AQI
Lowest AQI recorded in
April26AQI
202436AQI
Highest AQI recorded in
November46AQI
Lowest AQI recorded in
July26AQI
202343AQI
Highest AQI recorded in
June54AQI
Lowest AQI recorded in
August33AQI
202246AQI
Highest AQI recorded in
March57AQI
Lowest AQI recorded in
September37AQI
202136AQI
Highest AQI recorded in
March47AQI
Lowest AQI recorded in
October29AQI
202032AQI
Highest AQI recorded in
April49AQI
Lowest AQI recorded in
July19AQI
Most & Least Polluted Years Over the Last 6 Years
Caerdydd's annual 2025 AQI (37) shows an average percentage change of -3.1% (improved AQI) compared to previous years: 2020 (32), 2021 (36), 2022 (46), 2023 (43), 2024 (36).
