Harrow Stanmore, 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!
March Air Quality Analysis
Harrow Stanmore, Stanmore, Harrow, United Kingdom
AQI Trends: Highest and Lowest
Same Day Analysis (7th March):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 28 of Good air quality, showing improvement over 2025, 2023 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 6th Mar - 7th Mar 2026
Harrow Stanmore, Stanmore, Harrow, United Kingdom
7 AM6th Mar 2026
5 PM
6 AM7th Mar 2026
92AQI
14AQI
40AQI
8AQI
In the last 24 hours,
Harrow Stanmore's AQI reached its highest point of 92 at 2 PM during the Day, while the lowest point, 8, was recorded at 2 AM during the Night between 6th Mar and 7th Mar 2026.
Day & Night AQI Trend : Feb - Mar 2026
Harrow Stanmore, Stanmore, Harrow, United Kingdom
8°C7/10°C
8°C6/10°C
8°C6/10°C
8°C7/11°C
9°C8/11°C
9°C8/11°C
7°C5/9°C
6°C3/8°C
3°C1/6°C
5°C3/8°C
6°C5/8°C
4°C2/6°C
4°C1/5°C
5°C4/5°C
7°C3/10°C
10°C7/13°C
11°C9/13°C
10°C8/12°C
12°C9/15°C
12°C9/17°C
10°C9/12°C
11°C8/13°C
8°C6/10°C
9°C6/11°C
10°C8/14°C
10°C7/13°C
10°C6/15°C
12°C8/17°C
9°C7/10°C
8°C7/10°C
46AQI
37AQI
51AQI
41AQI
2026 Days Vs Air Quality
Harrow Stanmore, Stanmore, Harrow, United Kingdom
74%
49
26%
17
Total number of days with different AQI categories in last 67 days in 2026 (298 days remaining)
Under WHO’s Safe Air Quality Limits: 74%
Health Risk Level:
Low
In 2026, 74% of 67 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
Harrow Stanmore, Stanmore, Harrow, United Kingdom
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
44AQI (US)
25AQI (US)
27AQI (US)
38AQI (US)
45AQI (US)
54AQI (US)
23AQI (US)
44AQI (US)
23AQI (US)
28AQI (US)
48AQI (US)
18AQI (US)
15AQI (US)
28AQI (US)
17AQI (US)
28AQI (US)
35AQI (US)
76AQI (US)
64AQI (US)
28AQI (US)
15AQI (US)
36AQI (US)
55AQI (US)
52AQI (US)
54AQI (US)
87AQI (US)
41AQI (US)
31AQI (US)
52AQI (US)
54AQI (US)
40AQI (US)
46AQI (US)
53AQI (US)
63AQI (US)
38AQI (US)
54AQI (US)
55AQI (US)
39AQI (US)
42AQI (US)
47AQI (US)
46AQI (US)
43AQI (US)
38AQI (US)
47AQI (US)
44AQI (US)
38AQI (US)
39AQI (US)
47AQI (US)
46AQI (US)
48AQI (US)
44AQI (US)
37AQI (US)
32AQI (US)
37AQI (US)
37AQI (US)
39AQI (US)
32AQI (US)
35AQI (US)
33AQI (US)
36AQI (US)
49AQI (US)
52AQI (US)
57AQI (US)
68AQI (US)
61AQI (US)
28AQI (US)
40AQI (US)
43AQI (US)
50AQI (US)
No. of days
202642AQI (US)
Highest AQI (US) recorded in
March50AQI (US)
Lowest AQI (US) recorded in
January40AQI (US)
202540AQI (US)
Highest AQI (US) recorded in
March60AQI (US)
Lowest AQI (US) recorded in
July26AQI (US)
202435AQI (US)
Highest AQI (US) recorded in
March67AQI (US)
Lowest AQI (US) recorded in
April4AQI (US)
202339AQI (US)
Highest AQI (US) recorded in
February49AQI (US)
Lowest AQI (US) recorded in
August28AQI (US)
202243AQI (US)
Highest AQI (US) recorded in
December51AQI (US)
Lowest AQI (US) recorded in
August22AQI (US)
202143AQI (US)
Highest AQI (US) recorded in
September54AQI (US)
Lowest AQI (US) recorded in
April33AQI (US)
202038AQI (US)
Highest AQI (US) recorded in
April55AQI (US)
Lowest AQI (US) recorded in
July25AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Harrow Stanmore's annual 2026 AQI (US) (42) shows an average percentage change of 6.4% (worsened AQI (US)) compared to previous years: 2020 (38), 2021 (43), 2022 (43), 2023 (39), 2024 (35), 2025 (40).