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
10.19 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
30.99 μg/m³
0
55
155
255
425
605+
29.96 ppb
0
55
71
86
201
201+
0.55 ppb
0
36
76
186
605
1005+
5.51 ppb
0
54
101
361
1250
2050+
0.04 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Dorchester, Dorset
Dorchester, Dorset
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AQI 52
Moderate
10.19μg/m³
PM2.5
33.97μg/m³
PM10
32.19ppb
O3
0.55ppb
SO2
5.33ppb
NO2
0.04ppm
CO
AQI 49
Good
9.40μg/m³
PM2.5
19.81μg/m³
PM10
28.43ppb
O3
0.53ppb
SO2
5.10ppb
NO2
0.04ppm
CO
AQI 52
Moderate
10.37μg/m³
PM2.5
30.93μg/m³
PM10
27.10ppb
O3
0.55ppb
SO2
5.51ppb
NO2
0.03ppm
CO
AQI 52
Moderate
9.57μg/m³
PM2.5
19.63μg/m³
PM10
35.47ppb
O3
0.54ppb
SO2
4.69ppb
NO2
0.04ppm
CO
AQI 49
Good
9.04μg/m³
PM2.5
19.71μg/m³
PM10
34.49ppb
O3
0.54ppb
SO2
5.59ppb
NO2
0.04ppm
CO
AQI 54
Moderate
10.60μg/m³
PM2.5
37.61μg/m³
PM10
31.49ppb
O3
0.56ppb
SO2
4.42ppb
NO2
0.03ppm
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 2026-07-10.
In the last 24 hours, the best air quality in Dorchester, Dorset was observed at 12:00:00 on 2026-07-10.
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 10.19 μg/m3.
The PM10 concentration in Dorchester, Dorset is 30.992 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Dorchester, Dorset is 0.038 ppm.
Currently, Dorchester, Dorset has a sulfur dioxide (SO2) concentration of 0.548 ppb.
The current ozone (O3) level in Dorchester, Dorset at the moment is 29.965 ppm.
Nitrogen dioxide (NO2) level in Dorchester, Dorset at the moment is 5.509 ppb.
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