Stay updated with real-time air quality in Holywood, Ards and North Down 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)
27
Good
Holywood, Ards and North Down
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.62 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.17 μg/m³
0
55
155
255
425
605+
20.32 ppb
0
55
71
86
201
201+
0.39 ppb
0
36
76
186
605
1005+
3.93 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Holywood, Ards and North Down
Holywood, Ards and North Down
Scroll To Air Quality MapLoading...
AQI 33
Good
5.76μg/m³
PM2.5
13.13μg/m³
PM10
18.51ppb
O3
0.38ppb
SO2
13.17ppb
NO2
0.30ppm
CO
AQI 33
Good
5.86μg/m³
PM2.5
12.60μg/m³
PM10
14.31ppb
O3
0.41ppb
SO2
12.21ppb
NO2
0.30ppm
CO
AQI 27
Good
5.27μg/m³
PM2.5
12.45μg/m³
PM10
23.29ppb
O3
0.39ppb
SO2
17.65ppb
NO2
0.30ppm
CO
AQI 33
Good
5.96μg/m³
PM2.5
13.01μg/m³
PM10
20.27ppb
O3
0.38ppb
SO2
13.03ppb
NO2
0.30ppm
CO
AQI 33
Good
5.64μg/m³
PM2.5
12.82μg/m³
PM10
20.64ppb
O3
0.39ppb
SO2
14.52ppb
NO2
0.30ppm
CO
AQI 33
Good
5.87μg/m³
PM2.5
12.74μg/m³
PM10
14.69ppb
O3
0.48ppb
SO2
12.15ppb
NO2
0.30ppm
CO
Air quality and pollutant data for Ards and North Down, 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 Holywood, Ards and North Down is updated every hour for accuracy.
In the past 24 hours, the air quality in Holywood, Ards and North Down was at its worst at 05:00:00 on 2025-11-07.
In the last 24 hours, the best air quality in Holywood, Ards and North Down was observed at 10:00:00 on 2025-11-07.
As of now, the AQI in Holywood, Ards and North Down is 33, indicating Good conditions.
Holywood, Ards and North Down air has the highest levels of PM2.5.
Poor air quality in Holywood, Ards and North Down means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Holywood, Ards and North Down are currently 5.601 μg/m3.
The PM10 concentration in Holywood, Ards and North Down is 12.982 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Holywood, Ards and North Down is 0.296 ppm.
Currently, Holywood, Ards and North Down has a sulfur dioxide (SO2) concentration of 0.388 ppb.
The current ozone (O3) level in Holywood, Ards and North Down at the moment is 16.607 ppm.
Nitrogen dioxide (NO2) level in Holywood, Ards and North Down at the moment is 13.461 ppb.
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