Harlington, West Drayton, Hillingdon, 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
Harlington, West Drayton, Hillingdon, 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 29 of Good air quality, showing improvement over 2025, 2024 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 6th Mar - 7th Mar 2026
Harlington, West Drayton, Hillingdon, United Kingdom
7 AM6th Mar 2026
5 PM
6 AM7th Mar 2026
86AQI
32AQI
58AQI
16AQI
In the last 24 hours,
Harlington's AQI reached its highest point of 86 at 1 PM during the Day, while the lowest point, 16, was recorded at 4 AM during the Night between 6th Mar and 7th Mar 2026.
Day & Night AQI Trend : Feb - Mar 2026
Harlington, West Drayton, Hillingdon, United Kingdom
8°C7/10°C
8°C7/11°C
8°C6/11°C
8°C7/11°C
9°C8/11°C
10°C8/11°C
7°C5/9°C
6°C3/9°C
4°C1/6°C
5°C3/8°C
6°C5/9°C
4°C2/6°C
4°C2/5°C
5°C4/6°C
7°C3/10°C
10°C7/13°C
11°C9/14°C
10°C8/12°C
12°C9/16°C
12°C8/17°C
10°C8/12°C
11°C8/14°C
8°C6/10°C
9°C6/12°C
10°C8/14°C
10°C7/14°C
10°C6/16°C
12°C8/17°C
9°C7/11°C
9°C7/11°C
41AQI
33AQI
48AQI
36AQI
2026 Days Vs Air Quality
Harlington, West Drayton, Hillingdon, United Kingdom
88%
58
12%
8
Total number of days with different AQI categories in last 67 days in 2026 (298 days remaining)
Under WHO’s Safe Air Quality Limits: 88%
Health Risk Level:
Low
In 2026, 88% 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
Harlington, West Drayton, Hillingdon, United Kingdom
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
33AQI (US)
22AQI (US)
25AQI (US)
36AQI (US)
38AQI (US)
42AQI (US)
19AQI (US)
37AQI (US)
22AQI (US)
37AQI (US)
35AQI (US)
19AQI (US)
15AQI (US)
28AQI (US)
14AQI (US)
29AQI (US)
25AQI (US)
71AQI (US)
61AQI (US)
28AQI (US)
11AQI (US)
25AQI (US)
18AQI (US)
28AQI (US)
48AQI (US)
73AQI (US)
35AQI (US)
17AQI (US)
53AQI (US)
46AQI (US)
38AQI (US)
43AQI (US)
49AQI (US)
58AQI (US)
41AQI (US)
42AQI (US)
44AQI (US)
36AQI (US)
39AQI (US)
44AQI (US)
43AQI (US)
41AQI (US)
39AQI (US)
43AQI (US)
42AQI (US)
33AQI (US)
35AQI (US)
40AQI (US)
40AQI (US)
44AQI (US)
42AQI (US)
36AQI (US)
29AQI (US)
32AQI (US)
33AQI (US)
37AQI (US)
30AQI (US)
28AQI (US)
28AQI (US)
31AQI (US)
39AQI (US)
49AQI (US)
61AQI (US)
69AQI (US)
58AQI (US)
29AQI (US)
33AQI (US)
39AQI (US)
48AQI (US)
No. of days
202637AQI (US)
Highest AQI (US) recorded in
March48AQI (US)
Lowest AQI (US) recorded in
January33AQI (US)
202537AQI (US)
Highest AQI (US) recorded in
March57AQI (US)
Lowest AQI (US) recorded in
September22AQI (US)
202430AQI (US)
Highest AQI (US) recorded in
November44AQI (US)
Lowest AQI (US) recorded in
April24AQI (US)
202332AQI (US)
Highest AQI (US) recorded in
February43AQI (US)
Lowest AQI (US) recorded in
August23AQI (US)
202235AQI (US)
Highest AQI (US) recorded in
March53AQI (US)
Lowest AQI (US) recorded in
September28AQI (US)
202134AQI (US)
Highest AQI (US) recorded in
March46AQI (US)
Lowest AQI (US) recorded in
August24AQI (US)
202034AQI (US)
Highest AQI (US) recorded in
April54AQI (US)
Lowest AQI (US) recorded in
July22AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Harlington's annual 2026 AQI (US) (37) shows an average percentage change of 10.8% (worsened AQI (US)) compared to previous years: 2020 (34), 2021 (34), 2022 (35), 2023 (32), 2024 (30), 2025 (37).