Stay updated with real-time air quality in Borehamwood, Hertfordshire featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
33
Good
Borehamwood, Hertfordshire
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.01 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
9.20 μg/m³
0
55
155
255
425
605+
28.85 ppb
0
55
71
86
201
201+
0.83 ppb
0
36
76
186
605
1005+
13.59 ppb
0
54
101
361
1250
2050+
0.80 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Borehamwood, Hertfordshire
Borehamwood, Hertfordshire
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AQI 33
Good
6.06μg/m³
PM2.5
18.67μg/m³
PM10
26.23ppb
O3
0.85ppb
SO2
22.06ppb
NO2
1.01ppm
CO
AQI 44
Good
7.95μg/m³
PM2.5
17.05μg/m³
PM10
23.08ppb
O3
0.94ppb
SO2
17.82ppb
NO2
1.01ppm
CO
AQI 44
Good
8.29μg/m³
PM2.5
10.32μg/m³
PM10
26.59ppb
O3
0.92ppb
SO2
16.54ppb
NO2
1.01ppm
CO
AQI 33
Good
5.95μg/m³
PM2.5
18.99μg/m³
PM10
25.58ppb
O3
0.87ppb
SO2
21.68ppb
NO2
1.01ppm
CO
AQI 52
Moderate
9.64μg/m³
PM2.5
26.22μg/m³
PM10
28.82ppb
O3
0.94ppb
SO2
25.99ppb
NO2
1.01ppm
CO
AQI 49
Good
9.17μg/m³
PM2.5
10.32μg/m³
PM10
23.77ppb
O3
0.93ppb
SO2
22.64ppb
NO2
1.01ppm
CO
Air quality measurements for Hertfordshire, UK meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Borehamwood, Hertfordshire is updated on an hourly basis.
The worst air quality in Borehamwood, Hertfordshire was recorded at 12:00:00 on 2026-02-12.
The best air quality in Borehamwood, Hertfordshire was recorded at 11:00:00 on 2026-02-11.
The real-time air quality index in Borehamwood, Hertfordshire is 33, currently categorized as Good.
The most common pollutant in Borehamwood, Hertfordshire is PM2.5.
If the air quality in Borehamwood, Hertfordshire is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Borehamwood, Hertfordshire at present are 6.015 μg/m3.
The current PM10 levels in Borehamwood, Hertfordshire are 9.198 μg/m3.
The current carbon monoxide (CO) level in Borehamwood, Hertfordshire is 0.803 ppm.
The current sulfur dioxide (SO2) levels in Borehamwood, Hertfordshire are 0.829 ppb.
The current ozone (O3) levels at Borehamwood, Hertfordshire is 28.852 ppm.
The current nitrogen dioxide (NO2) levels at Borehamwood, Hertfordshire is 13.585 ppb.
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