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)
32
Good
Dorchester, Dorset
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.05 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.14 μg/m³
0
55
155
255
425
605+
34.75 ppb
0
55
71
86
201
201+
0.55 ppb
0
36
76
186
605
1005+
3.73 ppb
0
54
101
361
1250
2050+
0.11 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Dorchester, Dorset
Dorchester, Dorset
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AQI 32
Good
4.40μg/m³
PM2.5
8.94μg/m³
PM10
34.78ppb
O3
0.55ppb
SO2
3.60ppb
NO2
0.12ppm
CO
AQI 31
Good
3.56μg/m³
PM2.5
8.83μg/m³
PM10
33.48ppb
O3
0.59ppb
SO2
4.92ppb
NO2
0.12ppm
CO
AQI 31
Good
4.87μg/m³
PM2.5
18.25μg/m³
PM10
32.64ppb
O3
0.52ppb
SO2
4.16ppb
NO2
0.12ppm
CO
AQI 33
Good
4.09μg/m³
PM2.5
9.99μg/m³
PM10
35.55ppb
O3
0.56ppb
SO2
3.26ppb
NO2
0.12ppm
CO
AQI 33
Good
3.76μg/m³
PM2.5
8.72μg/m³
PM10
35.70ppb
O3
0.58ppb
SO2
2.90ppb
NO2
0.12ppm
CO
AQI 30
Good
5.06μg/m³
PM2.5
18.39μg/m³
PM10
32.22ppb
O3
0.53ppb
SO2
3.79ppb
NO2
0.12ppm
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 2026-05-13.
In the last 24 hours, the best air quality in Dorchester, Dorset was observed at 04:00:00 on 2026-05-14.
As of now, the AQI in Dorchester, Dorset is 32, 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 4.05 μg/m3.
The PM10 concentration in Dorchester, Dorset is 11.139 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Dorchester, Dorset is 0.108 ppm.
Currently, Dorchester, Dorset has a sulfur dioxide (SO2) concentration of 0.551 ppb.
The current ozone (O3) level in Dorchester, Dorset at the moment is 34.752 ppm.
Nitrogen dioxide (NO2) level in Dorchester, Dorset at the moment is 3.732 ppb.
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