Stay updated with real-time air quality in Stevenage, 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
Stevenage, Hertfordshire
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
9.03 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.20 μg/m³
0
55
155
255
425
605+
51.11 ppb
0
55
71
86
201
201+
1.45 ppb
0
36
76
186
605
1005+
8.33 ppb
0
54
101
361
1250
2050+
0.02 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Stevenage, Hertfordshire
Stevenage, Hertfordshire
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AQI 49
Good
9.07μg/m³
PM2.5
20.26μg/m³
PM10
37.67ppb
O3
1.06ppb
SO2
17.35ppb
NO2
0.36ppm
CO
AQI 49
Good
9.07μg/m³
PM2.5
20.26μg/m³
PM10
37.67ppb
O3
1.06ppb
SO2
17.35ppb
NO2
0.36ppm
CO
AQI 49
Good
9.08μg/m³
PM2.5
16.57μg/m³
PM10
37.58ppb
O3
1.07ppb
SO2
6.60ppb
NO2
0.36ppm
CO
AQI 49
Good
9.14μg/m³
PM2.5
16.70μg/m³
PM10
35.38ppb
O3
1.04ppb
SO2
17.35ppb
NO2
0.36ppm
CO
AQI 49
Good
9.08μg/m³
PM2.5
16.57μg/m³
PM10
37.58ppb
O3
1.07ppb
SO2
6.60ppb
NO2
0.36ppm
CO
AQI 49
Good
9.07μg/m³
PM2.5
17.86μg/m³
PM10
28.93ppb
O3
1.01ppb
SO2
6.64ppb
NO2
0.36ppm
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 Stevenage, Hertfordshire is updated on an hourly basis.
The worst air quality in Stevenage, Hertfordshire was recorded at 04:00:00 on 2025-06-19.
The best air quality in Stevenage, Hertfordshire was recorded at 01:00:00 on 2025-06-18.
The real-time air quality index in Stevenage, Hertfordshire is 52, currently categorized as Moderate.
The most common pollutant in Stevenage, Hertfordshire is PM2.5.
If the air quality in Stevenage, Hertfordshire is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Stevenage, Hertfordshire at present are 9.846 μg/m3.
The current PM10 levels in Stevenage, Hertfordshire are 16.82 μg/m3.
The current carbon monoxide (CO) level in Stevenage, Hertfordshire is 0.027 ppm.
The current sulfur dioxide (SO2) levels in Stevenage, Hertfordshire are 1.105 ppb.
The current ozone (O3) levels at Stevenage, Hertfordshire is 25.628 ppm.
The current nitrogen dioxide (NO2) levels at Stevenage, Hertfordshire is 11.386 ppb.
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