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

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.07 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
17.47 μg/m³
0
55
155
255
425
605+
19.69 ppb
0
55
71
86
201
201+
0.91 ppb
0
36
76
186
605
1005+
20.84 ppb
0
54
101
361
1250
2050+
0.53 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Caterham, Surrey
Caterham, Surrey
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AQI 22
Good
3.93μg/m³
PM2.5
14.27μg/m³
PM10
23.30ppb
O3
0.86ppb
SO2
9.22ppb
NO2
0.63ppm
CO
AQI 33
Good
6.42μg/m³
PM2.5
13.93μg/m³
PM10
25.29ppb
O3
0.80ppb
SO2
13.70ppb
NO2
0.63ppm
CO
AQI 33
Good
6.40μg/m³
PM2.5
13.78μg/m³
PM10
25.47ppb
O3
0.80ppb
SO2
12.10ppb
NO2
0.63ppm
CO
AQI 22
Good
3.98μg/m³
PM2.5
14.11μg/m³
PM10
23.37ppb
O3
0.85ppb
SO2
7.79ppb
NO2
0.63ppm
CO
AQI 38
Good
7.00μg/m³
PM2.5
11.00μg/m³
PM10
24.80ppb
O3
0.85ppb
SO2
5.32ppb
NO2
0.63ppm
CO
AQI 33
Good
5.55μg/m³
PM2.5
21.12μg/m³
PM10
25.89ppb
O3
0.76ppb
SO2
18.86ppb
NO2
0.63ppm
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 11:00:00 on 2026-02-11.
In the last 24 hours, the best air quality in Caterham, Surrey was observed at 01:00:00 on 2026-02-11.
As of now, the AQI in Caterham, Surrey is 33, indicating Good conditions.
Caterham, Surrey air has the highest levels of PM2.5.
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 6.065 μg/m3.
The PM10 concentration in Caterham, Surrey is 17.466 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Caterham, Surrey is 0.531 ppm.
Currently, Caterham, Surrey has a sulfur dioxide (SO2) concentration of 0.912 ppb.
The current ozone (O3) level in Caterham, Surrey at the moment is 19.693 ppm.
Nitrogen dioxide (NO2) level in Caterham, Surrey at the moment is 20.844 ppb.
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