Stay updated with real-time air quality in Dorchester, Dorset 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
Dorchester, Dorset
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.66 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
21.22 μg/m³
0
55
155
255
425
605+
22.28 ppb
0
55
71
86
201
201+
0.54 ppb
0
36
76
186
605
1005+
8.03 ppb
0
54
101
361
1250
2050+
0.33 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Dorchester, Dorset
Dorchester, Dorset
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AQI 49
Good
8.95μg/m³
PM2.5
22.27μg/m³
PM10
18.44ppb
O3
0.55ppb
SO2
6.95ppb
NO2
0.34ppm
CO
AQI 44
Good
8.35μg/m³
PM2.5
19.02μg/m³
PM10
17.22ppb
O3
0.54ppb
SO2
4.68ppb
NO2
0.34ppm
CO
AQI 49
Good
8.91μg/m³
PM2.5
25.45μg/m³
PM10
15.66ppb
O3
0.56ppb
SO2
4.22ppb
NO2
0.34ppm
CO
AQI 49
Good
8.69μg/m³
PM2.5
19.55μg/m³
PM10
13.89ppb
O3
0.55ppb
SO2
4.35ppb
NO2
0.34ppm
CO
AQI 49
Good
8.95μg/m³
PM2.5
23.87μg/m³
PM10
17.29ppb
O3
0.54ppb
SO2
5.26ppb
NO2
0.34ppm
CO
AQI 44
Good
8.12μg/m³
PM2.5
19.87μg/m³
PM10
7.89ppb
O3
0.56ppb
SO2
11.13ppb
NO2
0.34ppm
CO
Air quality and pollutant data for Dorset, 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 Dorchester, Dorset is updated every hour for accuracy.
In the past 24 hours, the air quality in Dorchester, Dorset was at its worst at 07:00:00 on 2025-11-06.
In the last 24 hours, the best air quality in Dorchester, Dorset was observed at 05:00:00 on 2025-11-06.
As of now, the AQI in Dorchester, Dorset is 49, indicating Good conditions.
Dorchester, Dorset air has the highest levels of PM2.5.
Poor air quality in Dorchester, Dorset means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Dorchester, Dorset are currently 8.965 μg/m3.
The PM10 concentration in Dorchester, Dorset is 24.861 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Dorchester, Dorset is 0.34 ppm.
Currently, Dorchester, Dorset has a sulfur dioxide (SO2) concentration of 0.55 ppb.
The current ozone (O3) level in Dorchester, Dorset at the moment is 17.957 ppm.
Nitrogen dioxide (NO2) level in Dorchester, Dorset at the moment is 5.806 ppb.
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