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)
34
Good
Rayleigh, Essex
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.49 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
9.93 μg/m³
0
55
155
255
425
605+
37.43 ppb
0
55
71
86
201
201+
0.41 ppb
0
36
76
186
605
1005+
2.95 ppb
0
54
101
361
1250
2050+
0.04 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Rayleigh, Essex
Rayleigh, Essex
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AQI 34
Good
5.67μg/m³
PM2.5
10.23μg/m³
PM10
37.44ppb
O3
0.41ppb
SO2
3.53ppb
NO2
0.04ppm
CO
AQI 34
Good
5.22μg/m³
PM2.5
9.51μg/m³
PM10
37.42ppb
O3
0.42ppb
SO2
2.11ppb
NO2
0.04ppm
CO
AQI 34
Good
6.45μg/m³
PM2.5
10.60μg/m³
PM10
36.64ppb
O3
0.40ppb
SO2
4.21ppb
NO2
0.04ppm
CO
AQI 33
Good
5.67μg/m³
PM2.5
10.46μg/m³
PM10
34.81ppb
O3
0.45ppb
SO2
6.68ppb
NO2
0.04ppm
CO
AQI 34
Good
5.10μg/m³
PM2.5
9.29μg/m³
PM10
37.40ppb
O3
0.42ppb
SO2
1.68ppb
NO2
0.04ppm
CO
AQI 35
Good
5.54μg/m³
PM2.5
10.31μg/m³
PM10
37.79ppb
O3
0.40ppb
SO2
3.83ppb
NO2
0.04ppm
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 10:00:00 on 2026-03-28.
In the last 24 hours, the best air quality in Rayleigh, Essex was observed at 03:00:00 on 2026-03-29.
As of now, the AQI in Rayleigh, Essex is 34, 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 5.487 μg/m3.
The PM10 concentration in Rayleigh, Essex is 9.934 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Rayleigh, Essex is 0.038 ppm.
Currently, Rayleigh, Essex has a sulfur dioxide (SO2) concentration of 0.412 ppb.
The current ozone (O3) level in Rayleigh, Essex at the moment is 37.428 ppm.
Nitrogen dioxide (NO2) level in Rayleigh, Essex at the moment is 2.946 ppb.
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