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)
38
Good
Dorchester, Dorset
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.97 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.04 μg/m³
0
55
155
255
425
605+
27.71 ppb
0
55
71
86
201
201+
1.07 ppb
0
36
76
186
605
1005+
2.30 ppb
0
54
101
361
1250
2050+
0.05 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Dorchester, Dorset
Dorchester, Dorset
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AQI 38
Good
7.01μg/m³
PM2.5
33.88μg/m³
PM10
23.21ppb
O3
0.92ppb
SO2
4.33ppb
NO2
0.05ppm
CO
AQI 33
Good
5.92μg/m³
PM2.5
22.39μg/m³
PM10
22.69ppb
O3
0.89ppb
SO2
4.96ppb
NO2
0.06ppm
CO
AQI 49
Good
8.57μg/m³
PM2.5
39.54μg/m³
PM10
24.01ppb
O3
0.94ppb
SO2
4.54ppb
NO2
0.05ppm
CO
AQI 33
Good
6.30μg/m³
PM2.5
13.71μg/m³
PM10
26.46ppb
O3
0.92ppb
SO2
3.35ppb
NO2
0.05ppm
CO
AQI 33
Good
5.85μg/m³
PM2.5
9.49μg/m³
PM10
24.71ppb
O3
0.91ppb
SO2
3.51ppb
NO2
0.05ppm
CO
AQI 52
Moderate
10.15μg/m³
PM2.5
39.32μg/m³
PM10
27.44ppb
O3
0.95ppb
SO2
2.82ppb
NO2
0.05ppm
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 06:00:00 on 2026-08-13.
In the last 24 hours, the best air quality in Dorchester, Dorset was observed at 09:00:00 on 2026-08-14.
As of now, the AQI in Dorchester, Dorset is 38, indicating Good 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 6.967 μg/m3.
The PM10 concentration in Dorchester, Dorset is 16.037 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Dorchester, Dorset is 0.052 ppm.
Currently, Dorchester, Dorset has a sulfur dioxide (SO2) concentration of 1.066 ppb.
The current ozone (O3) level in Dorchester, Dorset at the moment is 27.711 ppm.
Nitrogen dioxide (NO2) level in Dorchester, Dorset at the moment is 2.3 ppb.
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