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)
28
Good
Dorchester, Dorset
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.38 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.65 μg/m³
0
55
155
255
425
605+
30.47 ppb
0
55
71
86
201
201+
0.27 ppb
0
36
76
186
605
1005+
2.96 ppb
0
54
101
361
1250
2050+
0.13 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Dorchester, Dorset
Dorchester, Dorset
Scroll To Air Quality MapLoading...
AQI 31
Good
4.62μg/m³
PM2.5
12.80μg/m³
PM10
34.46ppb
O3
0.23ppb
SO2
3.30ppb
NO2
0.13ppm
CO
AQI 31
Good
4.73μg/m³
PM2.5
11.28μg/m³
PM10
34.46ppb
O3
0.24ppb
SO2
2.54ppb
NO2
0.12ppm
CO
AQI 29
Good
4.96μg/m³
PM2.5
13.62μg/m³
PM10
30.94ppb
O3
0.25ppb
SO2
2.88ppb
NO2
0.13ppm
CO
AQI 30
Good
5.19μg/m³
PM2.5
12.80μg/m³
PM10
31.58ppb
O3
0.27ppb
SO2
2.87ppb
NO2
0.12ppm
CO
AQI 30
Good
5.35μg/m³
PM2.5
12.61μg/m³
PM10
31.60ppb
O3
0.30ppb
SO2
3.09ppb
NO2
0.13ppm
CO
AQI 33
Good
5.92μg/m³
PM2.5
15.35μg/m³
PM10
31.24ppb
O3
0.29ppb
SO2
4.55ppb
NO2
0.13ppm
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 09:00:00 on 2025-12-27.
In the last 24 hours, the best air quality in Dorchester, Dorset was observed at 08:00:00 on 2025-12-28.
As of now, the AQI in Dorchester, Dorset is 28, indicating Good conditions.
Dorchester, Dorset air has the highest levels of O3.
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 5.38 μg/m3.
The PM10 concentration in Dorchester, Dorset is 13.649 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Dorchester, Dorset is 0.126 ppm.
Currently, Dorchester, Dorset has a sulfur dioxide (SO2) concentration of 0.27 ppb.
The current ozone (O3) level in Dorchester, Dorset at the moment is 30.471 ppm.
Nitrogen dioxide (NO2) level in Dorchester, Dorset at the moment is 2.957 ppb.
All Rights Reserved © Ambee Inc. 2025