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)
33
Good
Guildford, Surrey
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.21 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.80 μg/m³
0
55
155
255
425
605+
30.71 ppb
0
55
71
86
201
201+
0.57 ppb
0
36
76
186
605
1005+
9.40 ppb
0
54
101
361
1250
2050+
0.13 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Guildford, Surrey
Guildford, Surrey
Scroll To Air Quality MapLoading...
AQI 58
Moderate
12.81μg/m³
PM2.5
15.57μg/m³
PM10
24.97ppb
O3
0.55ppb
SO2
8.81ppb
NO2
0.14ppm
CO
AQI 58
Moderate
12.81μg/m³
PM2.5
15.57μg/m³
PM10
24.97ppb
O3
0.55ppb
SO2
8.81ppb
NO2
0.14ppm
CO
AQI 33
Good
6.37μg/m³
PM2.5
14.03μg/m³
PM10
24.73ppb
O3
0.63ppb
SO2
9.89ppb
NO2
0.14ppm
CO
AQI 38
Good
7.14μg/m³
PM2.5
13.83μg/m³
PM10
24.50ppb
O3
0.54ppb
SO2
11.68ppb
NO2
0.14ppm
CO
AQI 58
Moderate
13.01μg/m³
PM2.5
30.30μg/m³
PM10
24.49ppb
O3
0.61ppb
SO2
9.64ppb
NO2
0.14ppm
CO
AQI 38
Good
7.14μg/m³
PM2.5
13.83μg/m³
PM10
24.50ppb
O3
0.54ppb
SO2
11.68ppb
NO2
0.14ppm
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 08:00:00 on 2026-05-21.
In the last 24 hours, the best air quality in Guildford, Surrey was observed at 06:00:00 on 2026-05-21.
As of now, the AQI in Guildford, Surrey is 56, indicating Moderate 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 11.777 μg/m3.
The PM10 concentration in Guildford, Surrey is 24.111 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Guildford, Surrey is 0.139 ppm.
Currently, Guildford, Surrey has a sulfur dioxide (SO2) concentration of 0.563 ppb.
The current ozone (O3) level in Guildford, Surrey at the moment is 24.518 ppm.
Nitrogen dioxide (NO2) level in Guildford, Surrey at the moment is 8.845 ppb.
All Rights Reserved © Ambee Inc. 2025