Stay updated with real-time air quality in Horndean, Hampshire 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)
49
Good
Horndean, Hampshire
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
9.28 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.54 μg/m³
0
55
155
255
425
605+
19.26 ppb
0
55
71
86
201
201+
0.44 ppb
0
36
76
186
605
1005+
9.67 ppb
0
54
101
361
1250
2050+
0.76 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Horndean, Hampshire
Horndean, Hampshire
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AQI 49
Good
9.31μg/m³
PM2.5
13.55μg/m³
PM10
19.09ppb
O3
0.44ppb
SO2
9.58ppb
NO2
0.76ppm
CO
AQI 49
Good
9.32μg/m³
PM2.5
13.55μg/m³
PM10
19.03ppb
O3
0.44ppb
SO2
9.50ppb
NO2
0.76ppm
CO
AQI 49
Good
8.91μg/m³
PM2.5
29.94μg/m³
PM10
21.30ppb
O3
0.45ppb
SO2
8.23ppb
NO2
0.76ppm
CO
AQI 54
Moderate
10.56μg/m³
PM2.5
17.53μg/m³
PM10
23.30ppb
O3
0.50ppb
SO2
12.73ppb
NO2
0.76ppm
CO
AQI 49
Good
9.20μg/m³
PM2.5
13.53μg/m³
PM10
19.75ppb
O3
0.44ppb
SO2
9.60ppb
NO2
0.76ppm
CO
AQI 49
Good
8.97μg/m³
PM2.5
13.47μg/m³
PM10
20.93ppb
O3
0.44ppb
SO2
10.29ppb
NO2
0.76ppm
CO
Air quality and pollutant data for Hampshire, 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 Horndean, Hampshire is updated every hour for accuracy.
In the past 24 hours, the air quality in Horndean, Hampshire was at its worst at 01:00:00 on 2026-11-12.
In the last 24 hours, the best air quality in Horndean, Hampshire was observed at 11:00:00 on 2026-11-11.
As of now, the AQI in Horndean, Hampshire is 49, indicating Good conditions.
Horndean, Hampshire air has the highest levels of PM2.5.
Poor air quality in Horndean, Hampshire means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Horndean, Hampshire are currently 9.279 μg/m3.
The PM10 concentration in Horndean, Hampshire is 13.541 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Horndean, Hampshire is 0.76 ppm.
Currently, Horndean, Hampshire has a sulfur dioxide (SO2) concentration of 0.441 ppb.
The current ozone (O3) level in Horndean, Hampshire at the moment is 19.264 ppm.
Nitrogen dioxide (NO2) level in Horndean, Hampshire at the moment is 9.666 ppb.
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