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)
49
Good
Borehamwood, Hertfordshire
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
9.25 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
15.84 μg/m³
0
55
155
255
425
605+
28.09 ppb
0
55
71
86
201
201+
0.53 ppb
0
36
76
186
605
1005+
5.28 ppb
0
54
101
361
1250
2050+
0.00 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Borehamwood, Hertfordshire
Borehamwood, Hertfordshire
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AQI 44
Good
8.13μg/m³
PM2.5
19.65μg/m³
PM10
29.10ppb
O3
0.46ppb
SO2
10.78ppb
NO2
0.00ppm
CO
AQI 49
Good
9.24μg/m³
PM2.5
15.80μg/m³
PM10
27.53ppb
O3
0.62ppb
SO2
5.81ppb
NO2
0.00ppm
CO
AQI 52
Moderate
9.50μg/m³
PM2.5
20.77μg/m³
PM10
29.36ppb
O3
0.53ppb
SO2
6.58ppb
NO2
0.00ppm
CO
AQI 49
Good
9.10μg/m³
PM2.5
23.22μg/m³
PM10
28.39ppb
O3
0.49ppb
SO2
9.64ppb
NO2
0.00ppm
CO
AQI 52
Moderate
10.40μg/m³
PM2.5
30.35μg/m³
PM10
29.33ppb
O3
0.54ppb
SO2
7.70ppb
NO2
0.01ppm
CO
AQI 49
Good
9.07μg/m³
PM2.5
22.96μg/m³
PM10
27.98ppb
O3
0.54ppb
SO2
5.39ppb
NO2
0.01ppm
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 09:00:00 on 2026-07-10.
The best air quality in Borehamwood, Hertfordshire was recorded at 10:00:00 on 2026-07-10.
The real-time air quality index in Borehamwood, Hertfordshire is 49, 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 9.249 μg/m3.
The current PM10 levels in Borehamwood, Hertfordshire are 15.835 μg/m3.
The current carbon monoxide (CO) level in Borehamwood, Hertfordshire is 0.002 ppm.
The current sulfur dioxide (SO2) levels in Borehamwood, Hertfordshire are 0.529 ppb.
The current ozone (O3) levels at Borehamwood, Hertfordshire is 28.086 ppm.
The current nitrogen dioxide (NO2) levels at Borehamwood, Hertfordshire is 5.276 ppb.
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