Stay updated with real-time air quality in Guildford, Surrey 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)
28
Good
Guildford, Surrey
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.78 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
18.24 μg/m³
0
55
155
255
425
605+
30.10 ppb
0
55
71
86
201
201+
0.46 ppb
0
36
76
186
605
1005+
4.09 ppb
0
54
101
361
1250
2050+
0.03 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Guildford, Surrey
Guildford, Surrey
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AQI 28
Good
2.93μg/m³
PM2.5
5.51μg/m³
PM10
29.57ppb
O3
0.16ppb
SO2
6.90ppb
NO2
0.01ppm
CO
AQI 28
Good
2.93μg/m³
PM2.5
5.51μg/m³
PM10
29.57ppb
O3
0.16ppb
SO2
6.90ppb
NO2
0.01ppm
CO
AQI 31
Good
2.12μg/m³
PM2.5
6.88μg/m³
PM10
32.55ppb
O3
0.15ppb
SO2
4.57ppb
NO2
0.01ppm
CO
AQI 29
Good
1.88μg/m³
PM2.5
6.70μg/m³
PM10
31.13ppb
O3
0.16ppb
SO2
3.97ppb
NO2
0.01ppm
CO
AQI 27
Good
3.07μg/m³
PM2.5
6.94μg/m³
PM10
28.52ppb
O3
0.17ppb
SO2
7.25ppb
NO2
0.01ppm
CO
AQI 29
Good
1.88μg/m³
PM2.5
6.70μg/m³
PM10
31.13ppb
O3
0.16ppb
SO2
3.97ppb
NO2
0.01ppm
CO
Air quality and pollutant data for Surrey, 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 Guildford, Surrey is updated every hour for accuracy.
In the past 24 hours, the air quality in Guildford, Surrey was at its worst at 11:00:00 on 2025-12-27.
In the last 24 hours, the best air quality in Guildford, Surrey was observed at 06:00:00 on 2025-12-28.
As of now, the AQI in Guildford, Surrey is 30, indicating Good conditions.
Guildford, Surrey air has the highest levels of O3.
Poor air quality in Guildford, Surrey means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Guildford, Surrey are currently 3.26 μg/m3.
The PM10 concentration in Guildford, Surrey is 13.882 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Guildford, Surrey is 0.008 ppm.
Currently, Guildford, Surrey has a sulfur dioxide (SO2) concentration of 0.161 ppb.
The current ozone (O3) level in Guildford, Surrey at the moment is 31.583 ppm.
Nitrogen dioxide (NO2) level in Guildford, Surrey at the moment is 4.657 ppb.
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