Caerphilly, Caerphilly, 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
Caerphilly, Caerphilly, United Kingdom
AQI Trends: Highest and Lowest
Same Day Analysis (1st July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks the most lowest AQI at 23 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: 2nd Jul - 3rd Jul 2025
Caerphilly, Caerphilly, United Kingdom
4 AM2nd Jul 2025
9 PM
3 AM3rd Jul 2025
AQI
AQI
20AQI
16AQI
In the last 24 hours,
Caerphilly's AQI reached its highest point of 20 at 5 AM during the Night, while the lowest point, undefined, was recorded at 3 AM during the Night between 2nd Jul and 3rd Jul 2025.
Day & Night AQI Trend : Jun - Jul 2025
Caerphilly, Caerphilly, United Kingdom
12°C8/15°C
11°C7/15°C
12°C9/15°C
11°C9/14°C
11°C7/13°C
11°C5/15°C
13°C8/16°C
15°C11/18°C
16°C10/21°C
14°C12/18°C
15°C14/18°C
14°C12/16°C
14°C12/17°C
15°C11/18°C
14°C11/17°C
17°C11/21°C
19°C14/25°C
20°C16/24°C
18°C13/24°C
15°C13/18°C
13°C10/16°C
15°C13/18°C
17°C15/21°C
15°C13/17°C
17°C12/21°C
18°C16/21°C
18°C16/22°C
19°C15/25°C
18°C15/22°C
0°C0/0°C
0°C0/0°C
26AQI
26AQI
26AQI
26AQI
2025 Days Vs Air Quality
Caerphilly, Caerphilly, United Kingdom
79%
144
21%
38
Total number of days with different AQI categories in last 183 days in 2025 (182 days remaining)
Under WHO’s Safe Air Quality Limits: 79%
Health Risk Level:
Low
In 2025, 79% of 183 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
Caerphilly, Caerphilly, United Kingdom
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
29AQI
31AQI
41AQI
43AQI
29AQI
26AQI
25AQI
33AQI
34AQI
40AQI
51AQI
64AQI
38AQI
33AQI
36AQI
51AQI
55AQI
57AQI
64AQI
63AQI
63AQI
59AQI
34AQI
46AQI
35AQI
32AQI
33AQI
27AQI
27AQI
30AQI
35AQI
40AQI
35AQI
41AQI
29AQI
31AQI
35AQI
34AQI
46AQI
62AQI
57AQI
56AQI
56AQI
64AQI
66AQI
74AQI
67AQI
67AQI
69AQI
78AQI
36AQI
35AQI
36AQI
30AQI
31AQI
28AQI
27AQI
27AQI
38AQI
35AQI
37AQI
43AQI
52AQI
68AQI
75AQI
59AQI
49AQI
62AQI
88AQI
57AQI
32AQI
26AQI
31AQI
26AQI
27AQI
27AQI
46AQI
62AQI
57AQI
52AQI
43AQI
50AQI
82AQI
52AQI
26AQI
26AQI
20AQI
21AQI
35AQI
44AQI
50AQI
41AQI
44AQI
58AQI
40AQI
24AQI
29AQI
41AQI
48AQI
51AQI
62AQI
54AQI
34AQI
19AQI
28AQI
17AQI
19AQI
21AQI
28AQI
27AQI
24AQI
21AQI
16AQI
39AQI
49AQI
44AQI
18AQI
23AQI
45AQI
52AQI
47AQI
38AQI
24AQI
18AQI
16AQI
20AQI
36AQI
21AQI
28AQI
25AQI
30AQI
31AQI
34AQI
31AQI
31AQI
37AQI
39AQI
42AQI
37AQI
35AQI
36AQI
27AQI
38AQI
22AQI
18AQI
22AQI
20AQI
19AQI
18AQI
19AQI
17AQI
21AQI
23AQI
20AQI
23AQI
16AQI
16AQI
14AQI
21AQI
56AQI
36AQI
30AQI
40AQI
39AQI
28AQI
25AQI
25AQI
29AQI
28AQI
33AQI
43AQI
40AQI
38AQI
24AQI
20AQI
16AQI
15AQI
17AQI
16AQI
17AQI
19AQI
23AQI
41AQI
46AQI
45AQI
36AQI
28AQI
26AQI
23AQI
No. of days
202537AQI
Highest AQI recorded in
February46AQI
Lowest AQI recorded in
July23AQI
202432AQI
Highest AQI recorded in
February46AQI
Lowest AQI recorded in
July21AQI
202341AQI
Highest AQI recorded in
June53AQI
Lowest AQI recorded in
November24AQI
202245AQI
Highest AQI recorded in
March57AQI
Lowest AQI recorded in
August27AQI
202135AQI
Highest AQI recorded in
March45AQI
Lowest AQI recorded in
January27AQI
202021AQI
Highest AQI recorded in
November40AQI
Lowest AQI recorded in
July12AQI
Most & Least Polluted Years Over the Last 6 Years
Caerphilly's annual 2025 AQI (37) shows an average percentage change of 12.8% (worsened AQI) compared to previous years: 2020 (21), 2021 (35), 2022 (45), 2023 (41), 2024 (32).