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)
27
Good
Guildford, Surrey
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.62 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
8.66 μg/m³
0
55
155
255
425
605+
25.27 ppb
0
55
71
86
201
201+
0.55 ppb
0
36
76
186
605
1005+
6.16 ppb
0
54
101
361
1250
2050+
0.01 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Guildford, Surrey
Guildford, Surrey
Scroll To Air Quality MapLoading...
AQI 33
Good
5.86μg/m³
PM2.5
20.34μg/m³
PM10
22.58ppb
O3
0.66ppb
SO2
4.73ppb
NO2
0.04ppm
CO
AQI 33
Good
5.86μg/m³
PM2.5
20.34μg/m³
PM10
22.58ppb
O3
0.66ppb
SO2
4.73ppb
NO2
0.04ppm
CO
AQI 22
Good
3.67μg/m³
PM2.5
6.62μg/m³
PM10
22.62ppb
O3
0.68ppb
SO2
6.38ppb
NO2
0.03ppm
CO
AQI 22
Good
3.60μg/m³
PM2.5
13.28μg/m³
PM10
23.07ppb
O3
0.66ppb
SO2
3.98ppb
NO2
0.05ppm
CO
AQI 44
Good
7.78μg/m³
PM2.5
19.25μg/m³
PM10
22.34ppb
O3
0.61ppb
SO2
3.21ppb
NO2
0.04ppm
CO
AQI 22
Good
3.60μg/m³
PM2.5
13.28μg/m³
PM10
23.07ppb
O3
0.66ppb
SO2
3.98ppb
NO2
0.05ppm
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 09:00:00 on 2025-11-16.
In the last 24 hours, the best air quality in Guildford, Surrey was observed at 10:00:00 on 2025-11-17.
As of now, the AQI in Guildford, Surrey is 27, indicating Good conditions.
Guildford, Surrey air has the highest levels of PM2.5.
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 4.624 μg/m3.
The PM10 concentration in Guildford, Surrey is 8.665 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Guildford, Surrey is 0.009 ppm.
Currently, Guildford, Surrey has a sulfur dioxide (SO2) concentration of 0.553 ppb.
The current ozone (O3) level in Guildford, Surrey at the moment is 25.265 ppm.
Nitrogen dioxide (NO2) level in Guildford, Surrey at the moment is 6.159 ppb.
All Rights Reserved © Ambee Inc. 2025