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)
44
Good
Hoddesdon, Hertfordshire
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.15 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.42 μg/m³
0
55
155
255
425
605+
23.08 ppb
0
55
71
86
201
201+
0.64 ppb
0
36
76
186
605
1005+
8.81 ppb
0
54
101
361
1250
2050+
0.76 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Hoddesdon, Hertfordshire
Hoddesdon, Hertfordshire
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AQI 49
Good
8.78μg/m³
PM2.5
22.73μg/m³
PM10
22.31ppb
O3
0.56ppb
SO2
10.51ppb
NO2
0.76ppm
CO
AQI 44
Good
8.15μg/m³
PM2.5
13.42μg/m³
PM10
23.08ppb
O3
0.64ppb
SO2
8.81ppb
NO2
0.76ppm
CO
AQI 38
Good
6.91μg/m³
PM2.5
19.45μg/m³
PM10
20.29ppb
O3
0.66ppb
SO2
10.71ppb
NO2
0.76ppm
CO
AQI 49
Good
8.78μg/m³
PM2.5
17.39μg/m³
PM10
25.76ppb
O3
0.48ppb
SO2
9.65ppb
NO2
0.76ppm
CO
AQI 38
Good
6.93μg/m³
PM2.5
19.80μg/m³
PM10
20.27ppb
O3
0.66ppb
SO2
10.84ppb
NO2
0.76ppm
CO
AQI 38
Good
7.33μg/m³
PM2.5
20.50μg/m³
PM10
20.07ppb
O3
0.66ppb
SO2
13.18ppb
NO2
0.76ppm
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 11:00:00 on 2026-11-11.
The best air quality in Hoddesdon, Hertfordshire was recorded at 08:00:00 on 2026-11-12.
The real-time air quality index in Hoddesdon, Hertfordshire is 44, 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 8.151 μg/m3.
The current PM10 levels in Hoddesdon, Hertfordshire are 13.423 μg/m3.
The current carbon monoxide (CO) level in Hoddesdon, Hertfordshire is 0.761 ppm.
The current sulfur dioxide (SO2) levels in Hoddesdon, Hertfordshire are 0.641 ppb.
The current ozone (O3) levels at Hoddesdon, Hertfordshire is 23.078 ppm.
The current nitrogen dioxide (NO2) levels at Hoddesdon, Hertfordshire is 8.812 ppb.
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