Stay updated with real-time air quality in Heswall, Merseyside 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
Heswall, Merseyside
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+
14.08 μg/m³
0
55
155
255
425
605+
23.33 ppb
0
55
71
86
201
201+
0.74 ppb
0
36
76
186
605
1005+
2.32 ppb
0
54
101
361
1250
2050+
0.06 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Heswall, Merseyside
Heswall, Merseyside
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AQI 27
Good
4.71μg/m³
PM2.5
13.47μg/m³
PM10
22.06ppb
O3
0.79ppb
SO2
2.80ppb
NO2
0.06ppm
CO
AQI 22
Good
4.40μg/m³
PM2.5
12.59μg/m³
PM10
21.95ppb
O3
0.79ppb
SO2
2.34ppb
NO2
0.06ppm
CO
AQI 27
Good
4.75μg/m³
PM2.5
13.37μg/m³
PM10
22.21ppb
O3
0.80ppb
SO2
3.09ppb
NO2
0.06ppm
CO
AQI 27
Good
4.80μg/m³
PM2.5
19.08μg/m³
PM10
21.94ppb
O3
0.79ppb
SO2
3.29ppb
NO2
0.06ppm
CO
AQI 27
Good
4.66μg/m³
PM2.5
16.26μg/m³
PM10
21.97ppb
O3
0.79ppb
SO2
2.92ppb
NO2
0.06ppm
CO
AQI 27
Good
4.69μg/m³
PM2.5
15.45μg/m³
PM10
21.97ppb
O3
0.79ppb
SO2
2.84ppb
NO2
0.06ppm
CO
Air quality data and pollutant measurements for Merseyside, UK adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Heswall, Merseyside is updated every hour.
The worst air quality in Heswall, Merseyside in the last 24 hours was observed at 05:00:00 on 2026-08-13.
In the last 24 hrs, the best air quality in Heswall, Merseyside was observed at 04:00:00 on 2026-08-14.
The current air quality in Heswall, Merseyside is 27, categorized as Good based on real-time data.
The most common pollutant in Heswall, Merseyside is PM2.5.
If the air quality in Heswall, Merseyside is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Heswall, Merseyside is 4.596 μg/m3.
The current PM10 concentration at Heswall, Merseyside is 14.078 μg/m3.
The current carbon monoxide (CO) concentration at Heswall, Merseyside is 0.063 ppm.
The current sulfur dioxide (SO2) concentration at Heswall, Merseyside is 0.741 ppb.
The current ozone (O3) concentration at Heswall, Merseyside is 23.328 ppm.
The current nitrogen dioxide (NO2) concentration at Heswall, Merseyside is 2.321 ppb.
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