Stay updated with real-time air quality in Alton, 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)
38
Good
Alton, Hampshire
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
6.78 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.38 μg/m³
0
55
155
255
425
605+
34.58 ppb
0
55
71
86
201
201+
0.72 ppb
0
36
76
186
605
1005+
3.64 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Alton, Hampshire
Alton, Hampshire
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AQI 30
Good
5.25μg/m³
PM2.5
10.52μg/m³
PM10
32.00ppb
O3
0.78ppb
SO2
4.59ppb
NO2
0.23ppm
CO
AQI 31
Good
5.47μg/m³
PM2.5
10.40μg/m³
PM10
34.14ppb
O3
0.69ppb
SO2
3.45ppb
NO2
0.23ppm
CO
AQI 38
Good
6.93μg/m³
PM2.5
10.51μg/m³
PM10
33.91ppb
O3
0.72ppb
SO2
3.69ppb
NO2
0.23ppm
CO
AQI 31
Good
5.18μg/m³
PM2.5
10.46μg/m³
PM10
33.18ppb
O3
0.76ppb
SO2
4.58ppb
NO2
0.23ppm
CO
AQI 30
Good
5.25μg/m³
PM2.5
10.52μg/m³
PM10
32.00ppb
O3
0.78ppb
SO2
4.59ppb
NO2
0.23ppm
CO
AQI 30
Good
5.25μg/m³
PM2.5
10.52μg/m³
PM10
32.00ppb
O3
0.78ppb
SO2
4.59ppb
NO2
0.23ppm
CO
Air quality measurements for Hampshire, 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 Alton, Hampshire is updated on an hourly basis.
The worst air quality in Alton, Hampshire was recorded at 10:00:00 on 2025-06-14.
The best air quality in Alton, Hampshire was recorded at 12:00:00 on 2025-06-15.
The real-time air quality index in Alton, Hampshire is 38, currently categorized as Good.
The most common pollutant in Alton, Hampshire is PM2.5.
If the air quality in Alton, Hampshire is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Alton, Hampshire at present are 6.784 μg/m3.
The current PM10 levels in Alton, Hampshire are 10.384 μg/m3.
The current carbon monoxide (CO) level in Alton, Hampshire is 0.235 ppm.
The current sulfur dioxide (SO2) levels in Alton, Hampshire are 0.722 ppb.
The current ozone (O3) levels at Alton, Hampshire is 34.582 ppm.
The current nitrogen dioxide (NO2) levels at Alton, Hampshire is 3.639 ppb.
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