Stay updated with real-time air quality in Leicestershire, UK 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)
31
Good
Leicestershire, UK
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.76 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
15.93 μg/m³
0
55
155
255
425
605+
32.89 ppb
0
55
71
86
201
201+
0.29 ppb
0
36
76
186
605
1005+
3.13 ppb
0
54
101
361
1250
2050+
0.13 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Leicestershire, UK
Leicestershire, UK
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| City | AQI | PM2.5 | PM10 | O3 | SO2 | NO2 | CO |
|---|---|---|---|---|---|---|---|
AQI 31
Good
4.92μg/m³
PM2.5
11.31μg/m³
PM10
33.21ppb
O3
0.32ppb
SO2
2.89ppb
NO2
0.12ppm
CO
AQI 31
Good
4.77μg/m³
PM2.5
11.73μg/m³
PM10
33.09ppb
O3
0.50ppb
SO2
3.24ppb
NO2
0.13ppm
CO
AQI 31
Good
4.11μg/m³
PM2.5
10.69μg/m³
PM10
34.17ppb
O3
0.50ppb
SO2
3.61ppb
NO2
0.13ppm
CO
AQI 36
Good
2.99μg/m³
PM2.5
13.17μg/m³
PM10
38.98ppb
O3
0.31ppb
SO2
1.34ppb
NO2
0.12ppm
CO
AQI 35
Good
3.09μg/m³
PM2.5
11.58μg/m³
PM10
37.60ppb
O3
0.30ppb
SO2
1.86ppb
NO2
0.11ppm
CO
AQI 33
Good
5.67μg/m³
PM2.5
13.92μg/m³
PM10
32.09ppb
O3
0.41ppb
SO2
4.61ppb
NO2
0.13ppm
CO
Air quality measurements for Leicestershire, UK meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Leicestershire, UK is updated on an hourly basis.
The worst air quality in Leicestershire, UK was recorded at 05:00:00 on 2025-12-27.
The best air quality in Leicestershire, UK was recorded at 09:00:00 on 2025-12-28.
The real-time air quality index in Leicestershire, UK is 33, currently categorized as Good.
The most common pollutant in Leicestershire, UK is O3.
If the air quality in Leicestershire, UK is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Leicestershire, UK at present are 3.997 μg/m3.
The current PM10 levels in Leicestershire, UK are 13.096 μg/m3.
The current carbon monoxide (CO) level in Leicestershire, UK is 0.117 ppm.
The current sulfur dioxide (SO2) levels in Leicestershire, UK are 0.232 ppb.
The current ozone (O3) levels at Leicestershire, UK is 35.804 ppm.
The current nitrogen dioxide (NO2) levels at Leicestershire, UK is 1.996 ppb.
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