Stay updated with real-time air quality in Berkhamsted, 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
Berkhamsted, Hertfordshire
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
9.07 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
22.58 μg/m³
0
55
155
255
425
605+
37.81 ppb
0
55
71
86
201
201+
0.65 ppb
0
36
76
186
605
1005+
10.88 ppb
0
54
101
361
1250
2050+
0.01 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Berkhamsted, Hertfordshire
Berkhamsted, Hertfordshire
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AQI 52
Moderate
9.55μg/m³
PM2.5
23.81μg/m³
PM10
38.01ppb
O3
0.65ppb
SO2
10.16ppb
NO2
0.01ppm
CO
AQI 49
Good
9.31μg/m³
PM2.5
24.26μg/m³
PM10
38.52ppb
O3
0.65ppb
SO2
10.79ppb
NO2
0.01ppm
CO
AQI 44
Good
8.05μg/m³
PM2.5
22.52μg/m³
PM10
39.68ppb
O3
0.65ppb
SO2
11.79ppb
NO2
0.01ppm
CO
AQI 49
Good
9.11μg/m³
PM2.5
26.22μg/m³
PM10
44.12ppb
O3
0.65ppb
SO2
10.53ppb
NO2
0.01ppm
CO
AQI 44
Good
8.05μg/m³
PM2.5
22.52μg/m³
PM10
39.68ppb
O3
0.65ppb
SO2
11.79ppb
NO2
0.01ppm
CO
AQI 49
Good
8.67μg/m³
PM2.5
22.56μg/m³
PM10
44.47ppb
O3
0.65ppb
SO2
16.06ppb
NO2
0.01ppm
CO
Air quality and pollutant data for Hertfordshire, UK are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Berkhamsted, Hertfordshire is updated every hour for accuracy.
In the past 24 hours, the air quality in Berkhamsted, Hertfordshire was at its worst at 01:00:00 on 2026-08-14.
In the last 24 hours, the best air quality in Berkhamsted, Hertfordshire was observed at 04:00:00 on 2026-08-14.
As of now, the AQI in Berkhamsted, Hertfordshire is 49, indicating Good conditions.
Berkhamsted, Hertfordshire air has the highest levels of PM2.5.
Poor air quality in Berkhamsted, Hertfordshire means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Berkhamsted, Hertfordshire are currently 9.067 μg/m3.
The PM10 concentration in Berkhamsted, Hertfordshire is 22.582 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Berkhamsted, Hertfordshire is 0.012 ppm.
Currently, Berkhamsted, Hertfordshire has a sulfur dioxide (SO2) concentration of 0.647 ppb.
The current ozone (O3) level in Berkhamsted, Hertfordshire at the moment is 37.814 ppm.
Nitrogen dioxide (NO2) level in Berkhamsted, Hertfordshire at the moment is 10.878 ppb.
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