Real-time air quality index in Alton, Hampshire today
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)
54
Moderate
Alton, Hampshire
Last updated: ... (Local time)
Common air pollutants in Alton, Hampshire
Good
Fine
Moderate
Poor
Very poor
Hazardous
Particulate Matter2.5 (PM2.5)
10.53 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
Particulate Matter10 (PM10)
24.06 μg/m³
0
55
155
255
425
605+
Ozone (O3)
22.06 ppb
0
55
71
86
201
201+
Sulfur Dioxide (SO2)
0.60 ppb
0
36
76
186
605
1005+
Nitrogen Dioxide (NO2)
4.06 ppb
0
54
101
361
1250
2050+
Carbon Monoxide (CO)
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Alton, Hampshire
Alton, Hampshire
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Alton, Hampshire air quality map: Real-time AQI near you
Air quality in nearby cities
Farnham, Surrey
AQI 22
Good
3.93μg/m³
PM2.5
11.16μg/m³
PM10
16.40ppb
O3
0.64ppb
SO2
9.94ppb
NO2
0.02ppm
CO
Basingstoke, Hampshire
AQI 22
Good
3.68μg/m³
PM2.5
9.40μg/m³
PM10
13.75ppb
O3
0.61ppb
SO2
8.96ppb
NO2
0.03ppm
CO
Petersfield, Hampshire
AQI 22
Good
3.97μg/m³
PM2.5
11.34μg/m³
PM10
15.77ppb
O3
0.63ppb
SO2
9.99ppb
NO2
0.03ppm
CO
Fleet, Hampshire
AQI 22
Good
3.61μg/m³
PM2.5
11.45μg/m³
PM10
15.73ppb
O3
0.63ppb
SO2
9.65ppb
NO2
0.02ppm
CO
Weybourne, Surrey
AQI 22
Good
3.93μg/m³
PM2.5
11.16μg/m³
PM10
16.40ppb
O3
0.64ppb
SO2
9.94ppb
NO2
0.02ppm
CO
Aldershot, Hampshire
AQI 22
Good
3.93μg/m³
PM2.5
11.16μg/m³
PM10
16.40ppb
O3
0.64ppb
SO2
9.94ppb
NO2
0.02ppm
CO
How accurate is Hampshire, UK air quality data?
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
Frequently asked questions
How frequently is the air quality data for Alton, Hampshire updated?
Air quality data for Alton, Hampshire is updated on an hourly basis.
When did Alton, Hampshire experience the worst air quality in the last 24 hours?
The worst air quality in Alton, Hampshire was recorded at 08:00:00 on 2025-07-18.
When did Alton, Hampshire have its best air quality in the last 24 hours?
The best air quality in Alton, Hampshire was recorded at 11:00:00 on 2025-07-19.
What is the real-time air quality index for Alton, Hampshire?
The real-time air quality index in Alton, Hampshire is 22, currently categorized as Good.
Which pollutant is found most often in Alton, Hampshire?
The most common pollutant in Alton, Hampshire is PM2.5.
What can I do if the air quality in Alton, Hampshire is poor?
If the air quality in Alton, Hampshire is poor, limit outdoor activities and use a mask to safeguard your health.
What are the current PM2.5 levels in Alton, Hampshire?
The measured PM2.5 levels in Alton, Hampshire at present are 3.983 μg/m3.
What are the current PM10 levels at Alton, Hampshire?
The current PM10 levels in Alton, Hampshire are 11.622 μg/m3.
What are the current carbon monoxide (CO) levels at Alton, Hampshire?
The current carbon monoxide (CO) level in Alton, Hampshire is 0.024 ppm.
What are the current sulfur dioxide (SO2) levels at Alton, Hampshire?
The current sulfur dioxide (SO2) levels in Alton, Hampshire are 0.624 ppb.
What are the current ozone (O3) levels at Alton, Hampshire?
The current ozone (O3) levels at Alton, Hampshire is 15.304 ppm.
What are the current nitrogen dioxide (NO2) levels at Alton, Hampshire?
The current nitrogen dioxide (NO2) levels at Alton, Hampshire is 9.955 ppb.
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