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!
June Air Quality Analysis
Caerdydd, Cardiff, United Kingdom
AQI Trends: Highest and Lowest
Same Day Analysis (2nd June):
On this day, AQI across the 5 years varied significantly: 2026 ranks the most lowest AQI at 22 of Good air quality, showing improvement over 2025, 2024, 2023 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 1st Jun - 2nd Jun 2026
Caerdydd, Cardiff, United Kingdom
5 AM1st Jun 2026
9 PM
4 AM2nd Jun 2026
31AQI
21AQI
24AQI
8AQI
In the last 24 hours,
Caerdydd's AQI reached its highest point of 31 at 5 PM during the Day, while the lowest point, 8, was recorded at 12 AM during the Night between 1st Jun and 2nd Jun 2026.
Day & Night AQI Trend : May - Jun 2026
Caerdydd, Cardiff, United Kingdom
12°C10/14°C
11°C8/13°C
10°C8/12°C
10°C7/13°C
11°C8/15°C
12°C8/17°C
10°C7/13°C
9°C4/13°C
10°C5/14°C
10°C7/13°C
9°C6/12°C
9°C4/13°C
9°C4/12°C
10°C6/13°C
10°C8/12°C
13°C11/15°C
14°C11/16°C
14°C10/18°C
16°C11/21°C
16°C12/19°C
16°C11/21°C
20°C15/25°C
21°C16/26°C
19°C16/24°C
17°C13/23°C
15°C11/18°C
14°C10/19°C
14°C11/17°C
14°C12/16°C
14°C12/16°C
34AQI
28AQI
34AQI
32AQI
2026 Days Vs Air Quality
Caerdydd, Cardiff, United Kingdom
94%
141
6%
9
Total number of days with different AQI categories in last 153 days in 2026 (212 days remaining)
Under WHO’s Safe Air Quality Limits: 94%
Health Risk Level:
Very Low
In 2026, 94% of 153 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Caerdydd, Cardiff, United Kingdom
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
31AQI (US)
19AQI (US)
23AQI (US)
28AQI (US)
28AQI (US)
34AQI (US)
22AQI (US)
30AQI (US)
13AQI (US)
32AQI (US)
28AQI (US)
26AQI (US)
15AQI (US)
22AQI (US)
29AQI (US)
32AQI (US)
19AQI (US)
47AQI (US)
46AQI (US)
22AQI (US)
18AQI (US)
33AQI (US)
47AQI (US)
47AQI (US)
47AQI (US)
47AQI (US)
16AQI (US)
26AQI (US)
42AQI (US)
46AQI (US)
37AQI (US)
32AQI (US)
43AQI (US)
47AQI (US)
26AQI (US)
16AQI (US)
32AQI (US)
36AQI (US)
37AQI (US)
34AQI (US)
25AQI (US)
39AQI (US)
23AQI (US)
20AQI (US)
43AQI (US)
34AQI (US)
36AQI (US)
41AQI (US)
40AQI (US)
36AQI (US)
43AQI (US)
26AQI (US)
26AQI (US)
30AQI (US)
34AQI (US)
37AQI (US)
24AQI (US)
16AQI (US)
28AQI (US)
32AQI (US)
38AQI (US)
44AQI (US)
50AQI (US)
78AQI (US)
28AQI (US)
49AQI (US)
65AQI (US)
73AQI (US)
13AQI (US)
29AQI (US)
37AQI (US)
34AQI (US)
33AQI (US)
29AQI (US)
30AQI (US)
33AQI (US)
38AQI (US)
52AQI (US)
68AQI (US)
74AQI (US)
75AQI (US)
52AQI (US)
18AQI (US)
18AQI (US)
23AQI (US)
26AQI (US)
30AQI (US)
29AQI (US)
29AQI (US)
25AQI (US)
28AQI (US)
25AQI (US)
26AQI (US)
26AQI (US)
27AQI (US)
27AQI (US)
25AQI (US)
29AQI (US)
27AQI (US)
27AQI (US)
33AQI (US)
31AQI (US)
29AQI (US)
27AQI (US)
28AQI (US)
33AQI (US)
28AQI (US)
13AQI (US)
24AQI (US)
16AQI (US)
22AQI (US)
21AQI (US)
27AQI (US)
49AQI (US)
40AQI (US)
24AQI (US)
15AQI (US)
24AQI (US)
29AQI (US)
34AQI (US)
28AQI (US)
45AQI (US)
23AQI (US)
18AQI (US)
23AQI (US)
30AQI (US)
32AQI (US)
12AQI (US)
25AQI (US)
24AQI (US)
19AQI (US)
27AQI (US)
34AQI (US)
38AQI (US)
33AQI (US)
33AQI (US)
31AQI (US)
36AQI (US)
33AQI (US)
40AQI (US)
51AQI (US)
37AQI (US)
46AQI (US)
49AQI (US)
31AQI (US)
24AQI (US)
24AQI (US)
24AQI (US)
26AQI (US)
22AQI (US)
31AQI (US)
32AQI (US)
40AQI (US)
27AQI (US)
31AQI (US)
24AQI (US)
No. of days
202632AQI (US)
Highest AQI (US) recorded in
March40AQI (US)
Lowest AQI (US) recorded in
June24AQI (US)
202536AQI (US)
Highest AQI (US) recorded in
February51AQI (US)
Lowest AQI (US) recorded in
September25AQI (US)
202436AQI (US)
Highest AQI (US) recorded in
November46AQI (US)
Lowest AQI (US) recorded in
July26AQI (US)
202343AQI (US)
Highest AQI (US) recorded in
June54AQI (US)
Lowest AQI (US) recorded in
August33AQI (US)
202246AQI (US)
Highest AQI (US) recorded in
March57AQI (US)
Lowest AQI (US) recorded in
September37AQI (US)
202136AQI (US)
Highest AQI (US) recorded in
March47AQI (US)
Lowest AQI (US) recorded in
October29AQI (US)
202032AQI (US)
Highest AQI (US) recorded in
April49AQI (US)
Lowest AQI (US) recorded in
July19AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Caerdydd's annual 2026 AQI (US) (32) shows an average percentage change of -14.8% (improved AQI (US)) compared to previous years: 2020 (32), 2021 (36), 2022 (46), 2023 (43), 2024 (36), 2025 (36).