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
8.62 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
18.65 μg/m³
0
55
155
255
425
605+
44.33 ppb
0
55
71
86
201
201+
1.33 ppb
0
36
76
186
605
1005+
8.52 ppb
0
54
101
361
1250
2050+
0.03 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Horndean, Hampshire
Horndean, Hampshire
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AQI 44
Good
7.93μg/m³
PM2.5
17.80μg/m³
PM10
36.87ppb
O3
0.77ppb
SO2
6.56ppb
NO2
0.03ppm
CO
AQI 44
Good
7.91μg/m³
PM2.5
17.75μg/m³
PM10
36.89ppb
O3
0.76ppb
SO2
6.51ppb
NO2
0.03ppm
CO
AQI 38
Good
7.28μg/m³
PM2.5
23.07μg/m³
PM10
34.17ppb
O3
0.75ppb
SO2
5.84ppb
NO2
0.03ppm
CO
AQI 44
Good
7.86μg/m³
PM2.5
23.72μg/m³
PM10
37.89ppb
O3
0.74ppb
SO2
9.22ppb
NO2
0.03ppm
CO
AQI 44
Good
8.04μg/m³
PM2.5
18.11μg/m³
PM10
37.40ppb
O3
0.77ppb
SO2
6.77ppb
NO2
0.03ppm
CO
AQI 44
Good
8.35μg/m³
PM2.5
18.88μg/m³
PM10
37.59ppb
O3
0.79ppb
SO2
7.17ppb
NO2
0.03ppm
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 04:00:00 on 2026-08-14.
In the last 24 hours, the best air quality in Horndean, Hampshire was observed at 01:00:00 on 2026-08-14.
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 8.624 μg/m3.
The PM10 concentration in Horndean, Hampshire is 18.653 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Horndean, Hampshire is 0.03 ppm.
Currently, Horndean, Hampshire has a sulfur dioxide (SO2) concentration of 1.329 ppb.
The current ozone (O3) level in Horndean, Hampshire at the moment is 44.332 ppm.
Nitrogen dioxide (NO2) level in Horndean, Hampshire at the moment is 8.524 ppb.
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