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)
30
Good
Dorchester, Dorset
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.60 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.54 μg/m³
0
55
155
255
425
605+
31.88 ppb
0
55
71
86
201
201+
0.54 ppb
0
36
76
186
605
1005+
4.20 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Dorchester, Dorset
Dorchester, Dorset
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AQI 31
Good
4.61μg/m³
PM2.5
16.96μg/m³
PM10
33.76ppb
O3
0.54ppb
SO2
4.14ppb
NO2
0.17ppm
CO
AQI 28
Good
4.18μg/m³
PM2.5
16.31μg/m³
PM10
30.23ppb
O3
0.53ppb
SO2
3.96ppb
NO2
0.17ppm
CO
AQI 29
Good
4.42μg/m³
PM2.5
9.61μg/m³
PM10
30.60ppb
O3
0.54ppb
SO2
3.35ppb
NO2
0.17ppm
CO
AQI 27
Good
4.29μg/m³
PM2.5
8.86μg/m³
PM10
29.17ppb
O3
0.54ppb
SO2
4.45ppb
NO2
0.17ppm
CO
AQI 27
Good
4.23μg/m³
PM2.5
9.17μg/m³
PM10
29.21ppb
O3
0.54ppb
SO2
4.81ppb
NO2
0.17ppm
CO
AQI 29
Good
4.89μg/m³
PM2.5
13.15μg/m³
PM10
31.04ppb
O3
0.54ppb
SO2
3.04ppb
NO2
0.17ppm
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 2026-06-28.
In the last 24 hours, the best air quality in Dorchester, Dorset was observed at 08:00:00 on 2026-06-29.
As of now, the AQI in Dorchester, Dorset is 30, 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 4.602 μg/m3.
The PM10 concentration in Dorchester, Dorset is 14.536 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Dorchester, Dorset is 0.174 ppm.
Currently, Dorchester, Dorset has a sulfur dioxide (SO2) concentration of 0.537 ppb.
The current ozone (O3) level in Dorchester, Dorset at the moment is 31.875 ppm.
Nitrogen dioxide (NO2) level in Dorchester, Dorset at the moment is 4.196 ppb.
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