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

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.86 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
18.34 μg/m³
0
55
155
255
425
605+
27.33 ppb
0
55
71
86
201
201+
0.58 ppb
0
36
76
186
605
1005+
9.37 ppb
0
54
101
361
1250
2050+
0.01 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Hoddesdon, Hertfordshire
Hoddesdon, Hertfordshire
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AQI 49
Good
9.04μg/m³
PM2.5
21.48μg/m³
PM10
28.56ppb
O3
0.54ppb
SO2
5.20ppb
NO2
0.01ppm
CO
AQI 49
Good
9.08μg/m³
PM2.5
14.88μg/m³
PM10
28.00ppb
O3
0.56ppb
SO2
6.09ppb
NO2
0.01ppm
CO
AQI 49
Good
8.95μg/m³
PM2.5
17.72μg/m³
PM10
27.57ppb
O3
0.58ppb
SO2
8.96ppb
NO2
0.01ppm
CO
AQI 44
Good
7.86μg/m³
PM2.5
14.86μg/m³
PM10
30.69ppb
O3
0.55ppb
SO2
6.07ppb
NO2
0.01ppm
CO
AQI 49
Good
9.03μg/m³
PM2.5
17.12μg/m³
PM10
27.80ppb
O3
0.57ppb
SO2
8.74ppb
NO2
0.01ppm
CO
AQI 49
Good
9.03μg/m³
PM2.5
17.12μg/m³
PM10
27.80ppb
O3
0.57ppb
SO2
8.78ppb
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 Hoddesdon, Hertfordshire is updated on an hourly basis.
The worst air quality in Hoddesdon, Hertfordshire was recorded at 05:00:00 on 2026-07-11.
The best air quality in Hoddesdon, Hertfordshire was recorded at 12:00:00 on 2026-07-11.
The real-time air quality index in Hoddesdon, Hertfordshire is 49, currently categorized as Good.
The most common pollutant in Hoddesdon, Hertfordshire is PM2.5.
If the air quality in Hoddesdon, Hertfordshire is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Hoddesdon, Hertfordshire at present are 8.862 μg/m3.
The current PM10 levels in Hoddesdon, Hertfordshire are 18.342 μg/m3.
The current carbon monoxide (CO) level in Hoddesdon, Hertfordshire is 0.005 ppm.
The current sulfur dioxide (SO2) levels in Hoddesdon, Hertfordshire are 0.582 ppb.
The current ozone (O3) levels at Hoddesdon, Hertfordshire is 27.328 ppm.
The current nitrogen dioxide (NO2) levels at Hoddesdon, Hertfordshire is 9.374 ppb.
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