Stay updated with real-time air quality in Royston, 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)
19
Good
Royston, Hertfordshire
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
3.36 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.52 μg/m³
0
55
155
255
425
605+
20.13 ppb
0
55
71
86
201
201+
0.81 ppb
0
36
76
186
605
1005+
2.80 ppb
0
54
101
361
1250
2050+
0.25 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Royston, Hertfordshire
Royston, Hertfordshire
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AQI 23
Good
3.35μg/m³
PM2.5
10.11μg/m³
PM10
24.61ppb
O3
0.75ppb
SO2
10.36ppb
NO2
0.01ppm
CO
AQI 22
Good
3.87μg/m³
PM2.5
9.88μg/m³
PM10
16.84ppb
O3
0.75ppb
SO2
10.24ppb
NO2
0.02ppm
CO
AQI 23
Good
3.35μg/m³
PM2.5
10.11μg/m³
PM10
24.61ppb
O3
0.75ppb
SO2
10.36ppb
NO2
0.01ppm
CO
AQI 22
Good
3.87μg/m³
PM2.5
9.88μg/m³
PM10
16.84ppb
O3
0.75ppb
SO2
10.24ppb
NO2
0.02ppm
CO
AQI 21
Good
3.30μg/m³
PM2.5
8.63μg/m³
PM10
22.54ppb
O3
0.85ppb
SO2
7.62ppb
NO2
0.03ppm
CO
AQI 27
Good
4.60μg/m³
PM2.5
10.27μg/m³
PM10
13.04ppb
O3
0.76ppb
SO2
9.12ppb
NO2
0.03ppm
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 Royston, Hertfordshire is updated on an hourly basis.
The worst air quality in Royston, Hertfordshire was recorded at 09:00:00 on 2025-07-21.
The best air quality in Royston, Hertfordshire was recorded at 07:00:00 on 2025-07-22.
The real-time air quality index in Royston, Hertfordshire is 24, currently categorized as Good.
The most common pollutant in Royston, Hertfordshire is O3.
If the air quality in Royston, Hertfordshire is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Royston, Hertfordshire at present are 3.319 μg/m3.
The current PM10 levels in Royston, Hertfordshire are 8.816 μg/m3.
The current carbon monoxide (CO) level in Royston, Hertfordshire is 0.02 ppm.
The current sulfur dioxide (SO2) levels in Royston, Hertfordshire are 0.764 ppb.
The current ozone (O3) levels at Royston, Hertfordshire is 25.532 ppm.
The current nitrogen dioxide (NO2) levels at Royston, Hertfordshire is 7.86 ppb.
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