Stay updated with real-time air quality in Caterham, 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)
77
Moderate
Caterham, Surrey
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.93 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.12 μg/m³
0
55
155
255
425
605+
63.19 ppb
0
55
71
86
201
201+
0.58 ppb
0
36
76
186
605
1005+
12.91 ppb
0
54
101
361
1250
2050+
0.01 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Caterham, Surrey
Caterham, Surrey
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AQI 97
Moderate
10.52μg/m³
PM2.5
21.82μg/m³
PM10
68.84ppb
O3
0.65ppb
SO2
15.19ppb
NO2
0.01ppm
CO
AQI 51
Moderate
8.90μg/m³
PM2.5
21.94μg/m³
PM10
54.79ppb
O3
0.65ppb
SO2
12.41ppb
NO2
0.01ppm
CO
AQI 50
Good
8.71μg/m³
PM2.5
21.95μg/m³
PM10
53.62ppb
O3
0.65ppb
SO2
12.73ppb
NO2
0.01ppm
CO
AQI 48
Good
8.21μg/m³
PM2.5
25.79μg/m³
PM10
52.44ppb
O3
0.65ppb
SO2
9.76ppb
NO2
0.01ppm
CO
AQI 48
Good
8.00μg/m³
PM2.5
22.00μg/m³
PM10
51.74ppb
O3
0.65ppb
SO2
23.83ppb
NO2
0.01ppm
CO
AQI 54
Moderate
11.33μg/m³
PM2.5
24.99μg/m³
PM10
50.87ppb
O3
0.65ppb
SO2
13.04ppb
NO2
0.00ppm
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 Caterham, Surrey is updated every hour for accuracy.
In the past 24 hours, the air quality in Caterham, Surrey was at its worst at 09:00:00 on 2026-08-13.
In the last 24 hours, the best air quality in Caterham, Surrey was observed at 10:00:00 on 2026-08-14.
As of now, the AQI in Caterham, Surrey is 77, indicating Moderate conditions.
Caterham, Surrey air has the highest levels of O3.
Poor air quality in Caterham, Surrey means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Caterham, Surrey are currently 8.926 μg/m3.
The PM10 concentration in Caterham, Surrey is 23.119 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Caterham, Surrey is 0.006 ppm.
Currently, Caterham, Surrey has a sulfur dioxide (SO2) concentration of 0.576 ppb.
The current ozone (O3) level in Caterham, Surrey at the moment is 63.185 ppm.
Nitrogen dioxide (NO2) level in Caterham, Surrey at the moment is 12.913 ppb.
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