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
5.55 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.16 μg/m³
0
55
155
255
425
605+
36.06 ppb
0
55
71
86
201
201+
0.41 ppb
0
36
76
186
605
1005+
9.84 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 33
Good
3.34μg/m³
PM2.5
9.81μg/m³
PM10
35.75ppb
O3
0.40ppb
SO2
3.21ppb
NO2
0.02ppm
CO
AQI 32
Good
5.08μg/m³
PM2.5
10.75μg/m³
PM10
35.38ppb
O3
0.41ppb
SO2
7.12ppb
NO2
0.02ppm
CO
AQI 32
Good
5.03μg/m³
PM2.5
10.50μg/m³
PM10
35.30ppb
O3
0.41ppb
SO2
6.78ppb
NO2
0.02ppm
CO
AQI 33
Good
4.14μg/m³
PM2.5
11.94μg/m³
PM10
35.92ppb
O3
0.40ppb
SO2
4.90ppb
NO2
0.01ppm
CO
AQI 32
Good
5.00μg/m³
PM2.5
9.00μg/m³
PM10
35.01ppb
O3
0.40ppb
SO2
4.15ppb
NO2
0.02ppm
CO
AQI 33
Good
6.06μg/m³
PM2.5
14.94μg/m³
PM10
34.64ppb
O3
0.41ppb
SO2
12.92ppb
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 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 2026-03-28.
In the last 24 hours, the best air quality in Caterham, Surrey was observed at 11:00:00 on 2026-03-29.
As of now, the AQI in Caterham, Surrey is 33, indicating Good 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 5.546 μg/m3.
The PM10 concentration in Caterham, Surrey is 13.161 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Caterham, Surrey is 0.009 ppm.
Currently, Caterham, Surrey has a sulfur dioxide (SO2) concentration of 0.407 ppb.
The current ozone (O3) level in Caterham, Surrey at the moment is 36.058 ppm.
Nitrogen dioxide (NO2) level in Caterham, Surrey at the moment is 9.842 ppb.
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