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)
24
Good
Rayleigh, Essex
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
3.17 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
5.00 μg/m³
0
55
155
255
425
605+
25.55 ppb
0
55
71
86
201
201+
0.38 ppb
0
36
76
186
605
1005+
1.24 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Rayleigh, Essex
Rayleigh, Essex
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AQI 27
Good
4.51μg/m³
PM2.5
8.55μg/m³
PM10
21.97ppb
O3
0.47ppb
SO2
5.41ppb
NO2
0.36ppm
CO
AQI 22
Good
4.16μg/m³
PM2.5
8.20μg/m³
PM10
21.56ppb
O3
0.46ppb
SO2
5.37ppb
NO2
0.36ppm
CO
AQI 27
Good
5.19μg/m³
PM2.5
9.06μg/m³
PM10
23.34ppb
O3
0.52ppb
SO2
5.25ppb
NO2
0.36ppm
CO
AQI 25
Good
4.46μg/m³
PM2.5
8.42μg/m³
PM10
26.66ppb
O3
0.47ppb
SO2
6.22ppb
NO2
0.36ppm
CO
AQI 22
Good
4.07μg/m³
PM2.5
8.08μg/m³
PM10
21.50ppb
O3
0.45ppb
SO2
5.35ppb
NO2
0.36ppm
CO
AQI 22
Good
4.43μg/m³
PM2.5
8.52μg/m³
PM10
21.64ppb
O3
0.46ppb
SO2
5.48ppb
NO2
0.36ppm
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 2025-09-16.
In the last 24 hours, the best air quality in Rayleigh, Essex was observed at 03:00:00 on 2025-09-17.
As of now, the AQI in Rayleigh, Essex is 22, 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 4.371 μg/m3.
The PM10 concentration in Rayleigh, Essex is 8.442 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Rayleigh, Essex is 0.37 ppm.
Currently, Rayleigh, Essex has a sulfur dioxide (SO2) concentration of 0.472 ppb.
The current ozone (O3) level in Rayleigh, Essex at the moment is 18.952 ppm.
Nitrogen dioxide (NO2) level in Rayleigh, Essex at the moment is 4.63 ppb.
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