Thornton Heath, Croydon, 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
Thornton Heath, Croydon, United Kingdom
AQI Trends: Highest and Lowest
Same Day Analysis (2nd July ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 2nd highest AQI at 44 of Good air quality, showing improvement over 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025
Thornton Heath, Croydon, United Kingdom
4 AM2nd Jul 2025
9 PM
3 AM3rd Jul 2025
51AQI
39AQI
54AQI
50AQI
In the last 24 hours,
Thornton Heath's AQI reached its highest point of 54 at 1 AM during the Night, while the lowest point, 39, was recorded at 9 AM during the Day between 2nd Jul and 3rd Jul 2025.
Day & Night AQI Trend : Jun - Jul 2025
Thornton Heath, Croydon, United Kingdom
14°C11/16°C
14°C9/18°C
13°C11/14°C
14°C10/19°C
13°C10/17°C
13°C8/17°C
15°C9/19°C
16°C12/20°C
17°C12/23°C
19°C13/24°C
20°C15/27°C
18°C13/22°C
17°C11/22°C
19°C13/25°C
19°C14/25°C
21°C14/27°C
23°C17/30°C
22°C16/28°C
24°C17/31°C
21°C16/26°C
18°C13/23°C
18°C12/24°C
21°C15/27°C
19°C15/26°C
20°C13/26°C
23°C17/28°C
23°C17/30°C
25°C17/32°C
27°C20/34°C
20°C15/25°C
0°C0/0°C
34AQI
32AQI
35AQI
33AQI
2025 Days Vs Air Quality
Thornton Heath, Croydon, United Kingdom
68%
125
31%
56
1%
2
Total number of days with different AQI categories in last 184 days in 2025 (181 days remaining)
Under WHO’s Safe Air Quality Limits: 68%
Health Risk Level:
Moderate
In 2025, 68% of 184 days were within WHO’s safe air quality limits, and 32% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.
Annual Air Quality Insights
Thornton Heath, Croydon, United Kingdom
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
26AQI
33AQI
47AQI
54AQI
26AQI
24AQI
29AQI
41AQI
56AQI
71AQI
110AQI
86AQI
53AQI
53AQI
49AQI
43AQI
55AQI
71AQI
64AQI
60AQI
64AQI
74AQI
49AQI
41AQI
39AQI
35AQI
30AQI
30AQI
31AQI
33AQI
35AQI
41AQI
58AQI
57AQI
31AQI
39AQI
44AQI
43AQI
65AQI
56AQI
92AQI
76AQI
65AQI
72AQI
67AQI
88AQI
64AQI
56AQI
64AQI
71AQI
42AQI
40AQI
39AQI
34AQI
28AQI
35AQI
31AQI
30AQI
50AQI
53AQI
63AQI
74AQI
73AQI
94AQI
75AQI
53AQI
62AQI
98AQI
145AQI
59AQI
38AQI
32AQI
44AQI
33AQI
30AQI
34AQI
49AQI
64AQI
57AQI
71AQI
48AQI
78AQI
90AQI
83AQI
57AQI
48AQI
32AQI
30AQI
36AQI
39AQI
37AQI
46AQI
61AQI
77AQI
40AQI
30AQI
32AQI
55AQI
41AQI
40AQI
59AQI
67AQI
46AQI
29AQI
46AQI
24AQI
30AQI
40AQI
41AQI
35AQI
47AQI
30AQI
24AQI
46AQI
47AQI
59AQI
70AQI
54AQI
57AQI
59AQI
71AQI
55AQI
50AQI
26AQI
27AQI
25AQI
29AQI
25AQI
33AQI
34AQI
42AQI
35AQI
40AQI
39AQI
39AQI
43AQI
36AQI
46AQI
39AQI
32AQI
39AQI
34AQI
31AQI
31AQI
21AQI
25AQI
23AQI
21AQI
23AQI
24AQI
26AQI
25AQI
22AQI
25AQI
23AQI
20AQI
18AQI
17AQI
20AQI
53AQI
36AQI
36AQI
48AQI
43AQI
43AQI
29AQI
30AQI
30AQI
34AQI
43AQI
50AQI
44AQI
41AQI
24AQI
25AQI
23AQI
26AQI
24AQI
30AQI
39AQI
37AQI
46AQI
44AQI
49AQI
53AQI
59AQI
46AQI
34AQI
32AQI
45AQI
No. of days
202545AQI
Highest AQI recorded in
March59AQI
Lowest AQI recorded in
June32AQI
202428AQI
Highest AQI recorded in
November48AQI
Lowest AQI recorded in
April20AQI
202330AQI
Highest AQI recorded in
January43AQI
Lowest AQI recorded in
July19AQI
202239AQI
Highest AQI recorded in
March58AQI
Lowest AQI recorded in
January23AQI
202137AQI
Highest AQI recorded in
March50AQI
Lowest AQI recorded in
August22AQI
202035AQI
Highest AQI recorded in
April58AQI
Lowest AQI recorded in
July23AQI
Most & Least Polluted Years Over the Last 6 Years
Thornton Heath's annual 2025 AQI (45) shows an average percentage change of 36.8% (worsened AQI) compared to previous years: 2020 (35), 2021 (37), 2022 (39), 2023 (30), 2024 (28).