Stanmore, Harrow, United Kingdom Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Stanmore, Harrow, United Kingdom
AQI Trends: Highest and Lowest
Same Day Analysis (31st August ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 1st highest AQI at 45 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
2025 Days Vs Air Quality
Stanmore, Harrow, United Kingdom
70%
148
29%
62
0.4%
1
Total number of days with different AQI categories in last 213 days in 2025 (152 days remaining)
Under WHO’s Safe Air Quality Limits: 70%
Health Risk Level:
Low
In 2025, 70% of 213 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
Stanmore, Harrow, United Kingdom
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
28AQI
34AQI
44AQI
54AQI
31AQI
23AQI
25AQI
37AQI
51AQI
63AQI
89AQI
89AQI
56AQI
54AQI
56AQI
53AQI
58AQI
76AQI
69AQI
66AQI
69AQI
78AQI
57AQI
46AQI
38AQI
33AQI
27AQI
26AQI
28AQI
30AQI
35AQI
40AQI
57AQI
60AQI
39AQI
48AQI
51AQI
46AQI
65AQI
71AQI
80AQI
76AQI
70AQI
69AQI
66AQI
80AQI
70AQI
64AQI
74AQI
83AQI
45AQI
36AQI
43AQI
33AQI
27AQI
35AQI
28AQI
31AQI
50AQI
52AQI
59AQI
65AQI
66AQI
80AQI
79AQI
56AQI
63AQI
84AQI
126AQI
59AQI
48AQI
42AQI
52AQI
38AQI
42AQI
46AQI
53AQI
70AQI
65AQI
74AQI
55AQI
80AQI
88AQI
80AQI
58AQI
49AQI
33AQI
32AQI
34AQI
38AQI
38AQI
41AQI
56AQI
64AQI
40AQI
29AQI
32AQI
46AQI
40AQI
42AQI
59AQI
63AQI
49AQI
32AQI
45AQI
26AQI
31AQI
36AQI
43AQI
29AQI
41AQI
28AQI
23AQI
43AQI
44AQI
57AQI
66AQI
47AQI
54AQI
54AQI
59AQI
54AQI
50AQI
25AQI
22AQI
26AQI
35AQI
22AQI
31AQI
29AQI
33AQI
36AQI
38AQI
36AQI
35AQI
40AQI
36AQI
45AQI
37AQI
32AQI
38AQI
31AQI
30AQI
26AQI
19AQI
22AQI
20AQI
17AQI
21AQI
20AQI
22AQI
24AQI
21AQI
23AQI
22AQI
19AQI
16AQI
15AQI
20AQI
57AQI
39AQI
36AQI
46AQI
37AQI
36AQI
27AQI
26AQI
30AQI
32AQI
40AQI
47AQI
47AQI
50AQI
22AQI
22AQI
18AQI
18AQI
21AQI
17AQI
18AQI
23AQI
33AQI
32AQI
19AQI
19AQI
19AQI
17AQI
18AQI
21AQI
23AQI
21AQI
25AQI
30AQI
30AQI
33AQI
24AQI
22AQI
22AQI
23AQI
24AQI
22AQI
19AQI
18AQI
33AQI
45AQI
38AQI
37AQI
26AQI
28AQI
25AQI
30AQI
49AQI
55AQI
60AQI
43AQI
32AQI
29AQI
26AQI
No. of days
202542AQI
Highest AQI recorded in
March60AQI
Lowest AQI recorded in
July26AQI
202435AQI
Highest AQI recorded in
March67AQI
Lowest AQI recorded in
April4AQI
202339AQI
Highest AQI recorded in
February49AQI
Lowest AQI recorded in
August28AQI
202243AQI
Highest AQI recorded in
December51AQI
Lowest AQI recorded in
August22AQI
202143AQI
Highest AQI recorded in
September54AQI
Lowest AQI recorded in
April33AQI
202038AQI
Highest AQI recorded in
April55AQI
Lowest AQI recorded in
July25AQI
Most & Least Polluted Years Over the Last 6 Years
Stanmore's annual 2025 AQI (42) shows an average percentage change of 6.8% (worsened AQI) compared to previous years: 2020 (38), 2021 (43), 2022 (43), 2023 (39), 2024 (35).
