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
9.12 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
15.84 μg/m³
0
55
155
255
425
605+
33.48 ppb
0
55
71
86
201
201+
0.84 ppb
0
36
76
186
605
1005+
5.09 ppb
0
54
101
361
1250
2050+
0.80 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Horndean, Hampshire
Horndean, Hampshire
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AQI 49
Good
9.14μg/m³
PM2.5
15.92μg/m³
PM10
32.70ppb
O3
0.80ppb
SO2
9.91ppb
NO2
1.01ppm
CO
AQI 49
Good
9.19μg/m³
PM2.5
16.04μg/m³
PM10
32.81ppb
O3
0.80ppb
SO2
9.88ppb
NO2
1.01ppm
CO
AQI 52
Moderate
9.85μg/m³
PM2.5
21.13μg/m³
PM10
34.46ppb
O3
0.81ppb
SO2
5.12ppb
NO2
1.01ppm
CO
AQI 52
Moderate
9.96μg/m³
PM2.5
29.53μg/m³
PM10
30.45ppb
O3
0.81ppb
SO2
9.65ppb
NO2
1.01ppm
CO
AQI 49
Good
9.31μg/m³
PM2.5
16.16μg/m³
PM10
32.06ppb
O3
0.80ppb
SO2
11.10ppb
NO2
1.01ppm
CO
AQI 49
Good
9.15μg/m³
PM2.5
15.66μg/m³
PM10
30.90ppb
O3
0.80ppb
SO2
12.31ppb
NO2
1.01ppm
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 12:00:00 on 2026-02-12.
In the last 24 hours, the best air quality in Horndean, Hampshire was observed at 03:00:00 on 2026-02-11.
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 9.118 μg/m3.
The PM10 concentration in Horndean, Hampshire is 15.844 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Horndean, Hampshire is 0.803 ppm.
Currently, Horndean, Hampshire has a sulfur dioxide (SO2) concentration of 0.84 ppb.
The current ozone (O3) level in Horndean, Hampshire at the moment is 33.483 ppm.
Nitrogen dioxide (NO2) level in Horndean, Hampshire at the moment is 5.09 ppb.
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