Stay updated with real-time air quality in Rayleigh, Essex 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)
26
Good
Rayleigh, Essex
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.22 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.58 μg/m³
0
55
155
255
425
605+
27.51 ppb
0
55
71
86
201
201+
0.73 ppb
0
36
76
186
605
1005+
3.36 ppb
0
54
101
361
1250
2050+
0.01 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Rayleigh, Essex
Rayleigh, Essex
Scroll To Air Quality MapLoading...
AQI 26
Good
4.30μg/m³
PM2.5
12.85μg/m³
PM10
28.10ppb
O3
0.73ppb
SO2
3.60ppb
NO2
0.01ppm
CO
AQI 25
Good
4.11μg/m³
PM2.5
9.70μg/m³
PM10
26.67ppb
O3
0.73ppb
SO2
3.01ppb
NO2
0.01ppm
CO
AQI 27
Good
4.62μg/m³
PM2.5
17.38μg/m³
PM10
28.28ppb
O3
0.72ppb
SO2
4.29ppb
NO2
0.01ppm
CO
AQI 25
Good
4.29μg/m³
PM2.5
7.12μg/m³
PM10
26.52ppb
O3
0.72ppb
SO2
2.99ppb
NO2
0.01ppm
CO
AQI 24
Good
4.05μg/m³
PM2.5
8.82μg/m³
PM10
26.23ppb
O3
0.73ppb
SO2
2.84ppb
NO2
0.01ppm
CO
AQI 27
Good
4.26μg/m³
PM2.5
12.24μg/m³
PM10
28.63ppb
O3
0.73ppb
SO2
3.52ppb
NO2
0.01ppm
CO
Air quality and pollutant data for Essex, 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 Rayleigh, Essex is updated every hour for accuracy.
In the past 24 hours, the air quality in Rayleigh, Essex was at its worst at 05:00:00 on 2025-11-16.
In the last 24 hours, the best air quality in Rayleigh, Essex was observed at 01:00:00 on 2025-11-17.
As of now, the AQI in Rayleigh, Essex is 26, indicating Good conditions.
Rayleigh, Essex air has the highest levels of O3.
Poor air quality in Rayleigh, Essex means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Rayleigh, Essex are currently 4.225 μg/m3.
The PM10 concentration in Rayleigh, Essex is 11.578 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Rayleigh, Essex is 0.014 ppm.
Currently, Rayleigh, Essex has a sulfur dioxide (SO2) concentration of 0.731 ppb.
The current ozone (O3) level in Rayleigh, Essex at the moment is 27.509 ppm.
Nitrogen dioxide (NO2) level in Rayleigh, Essex at the moment is 3.359 ppb.
All Rights Reserved © Ambee Inc. 2025