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)
52
Moderate
Dorchester, Dorset
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
10.05 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
12.60 μg/m³
0
55
155
255
425
605+
21.75 ppb
0
55
71
86
201
201+
0.52 ppb
0
36
76
186
605
1005+
13.18 ppb
0
54
101
361
1250
2050+
0.76 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Dorchester, Dorset
Dorchester, Dorset
Scroll To Air Quality MapLoading...
AQI 52
Moderate
10.10μg/m³
PM2.5
12.28μg/m³
PM10
20.78ppb
O3
0.49ppb
SO2
14.22ppb
NO2
0.76ppm
CO
AQI 52
Moderate
9.97μg/m³
PM2.5
11.95μg/m³
PM10
20.96ppb
O3
0.45ppb
SO2
13.29ppb
NO2
0.76ppm
CO
AQI 52
Moderate
10.30μg/m³
PM2.5
12.47μg/m³
PM10
21.48ppb
O3
0.48ppb
SO2
15.41ppb
NO2
0.76ppm
CO
AQI 52
Moderate
9.51μg/m³
PM2.5
12.07μg/m³
PM10
21.88ppb
O3
0.55ppb
SO2
11.78ppb
NO2
0.76ppm
CO
AQI 52
Moderate
9.92μg/m³
PM2.5
12.13μg/m³
PM10
21.77ppb
O3
0.56ppb
SO2
16.86ppb
NO2
0.76ppm
CO
AQI 52
Moderate
10.23μg/m³
PM2.5
33.32μg/m³
PM10
22.33ppb
O3
0.49ppb
SO2
13.84ppb
NO2
0.76ppm
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 10:00:00 on 2026-11-12.
In the last 24 hours, the best air quality in Dorchester, Dorset was observed at 09:00:00 on 2026-11-12.
As of now, the AQI in Dorchester, Dorset is 52, indicating Moderate 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 10.054 μg/m3.
The PM10 concentration in Dorchester, Dorset is 12.602 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Dorchester, Dorset is 0.76 ppm.
Currently, Dorchester, Dorset has a sulfur dioxide (SO2) concentration of 0.518 ppb.
The current ozone (O3) level in Dorchester, Dorset at the moment is 21.747 ppm.
Nitrogen dioxide (NO2) level in Dorchester, Dorset at the moment is 13.184 ppb.
All Rights Reserved © Ambee Inc. 2025