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)
44
Good
Rayleigh, Essex
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.04 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
12.78 μg/m³
0
55
155
255
425
605+
25.30 ppb
0
55
71
86
201
201+
0.43 ppb
0
36
76
186
605
1005+
6.68 ppb
0
54
101
361
1250
2050+
0.76 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Rayleigh, Essex
Rayleigh, Essex
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AQI 44
Good
8.07μg/m³
PM2.5
13.07μg/m³
PM10
25.71ppb
O3
0.44ppb
SO2
7.25ppb
NO2
0.76ppm
CO
AQI 44
Good
7.99μg/m³
PM2.5
12.35μg/m³
PM10
24.72ppb
O3
0.43ppb
SO2
5.86ppb
NO2
0.76ppm
CO
AQI 49
Good
8.50μg/m³
PM2.5
14.34μg/m³
PM10
26.14ppb
O3
0.46ppb
SO2
7.66ppb
NO2
0.76ppm
CO
AQI 44
Good
8.48μg/m³
PM2.5
13.70μg/m³
PM10
24.81ppb
O3
0.43ppb
SO2
8.38ppb
NO2
0.76ppm
CO
AQI 44
Good
7.97μg/m³
PM2.5
12.14μg/m³
PM10
24.43ppb
O3
0.43ppb
SO2
5.44ppb
NO2
0.76ppm
CO
AQI 44
Good
7.92μg/m³
PM2.5
12.81μg/m³
PM10
25.98ppb
O3
0.43ppb
SO2
7.63ppb
NO2
0.76ppm
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 11:00:00 on 2026-11-11.
In the last 24 hours, the best air quality in Rayleigh, Essex was observed at 10:00:00 on 2026-11-12.
As of now, the AQI in Rayleigh, Essex is 44, indicating Good conditions.
Rayleigh, Essex air has the highest levels of PM2.5.
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 8.038 μg/m3.
The PM10 concentration in Rayleigh, Essex is 12.781 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Rayleigh, Essex is 0.761 ppm.
Currently, Rayleigh, Essex has a sulfur dioxide (SO2) concentration of 0.434 ppb.
The current ozone (O3) level in Rayleigh, Essex at the moment is 25.301 ppm.
Nitrogen dioxide (NO2) level in Rayleigh, Essex at the moment is 6.68 ppb.
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