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 (17th July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks the most lowest AQI at 19 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: 18th Jul - 19th Jul 2025
Caerphilly, Caerphilly, United Kingdom
5 AM18th Jul 2025
9 PM
4 AM19th Jul 2025
21AQI
15AQI
19AQI
18AQI
In the last 24 hours,
Caerphilly's AQI reached its highest point of 21 at 10 AM during the Day, while the lowest point, undefined, was recorded at 4 AM during the Night between 18th Jul and 19th Jul 2025.
Day & Night AQI Trend : Jun - Jul 2025
Caerphilly, Caerphilly, United Kingdom
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
15°C10/19°C
14°C10/18°C
15°C11/19°C
15°C15/17°C
15°C12/18°C
14°C12/18°C
14°C9/19°C
17°C11/22°C
20°C15/25°C
22°C16/28°C
22°C16/29°C
20°C14/26°C
16°C13/18°C
15°C13/17°C
16°C12/21°C
18°C15/22°C
17°C14/20°C
0°C0/0°C
22AQI
22AQI
22AQI
22AQI
2025 Days Vs Air Quality
Caerphilly, Caerphilly, United Kingdom
81%
160
19%
38
Total number of days with different AQI categories in last 200 days in 2025 (165 days remaining)
Under WHO’s Safe Air Quality Limits: 81%
Health Risk Level:
Low
In 2025, 81% of 200 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
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
41AQI
46AQI
45AQI
36AQI
28AQI
26AQI
20AQI
202536AQI
Highest AQI recorded in
February46AQI
Lowest AQI recorded in
July20AQI
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 (36) shows an average percentage change of 8.6% (worsened AQI) compared to previous years: 2020 (21), 2021 (35), 2022 (45), 2023 (41), 2024 (32).