Stay updated with real-time air quality in Hereford, County of Herefordshire 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)
86
Moderate
Hereford, County of Herefordshire
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
28.22 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
38.83 μg/m³
0
55
155
255
425
605+
26.74 ppb
0
55
71
86
201
201+
0.64 ppb
0
36
76
186
605
1005+
4.54 ppb
0
54
101
361
1250
2050+
0.05 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Hereford, County of Herefordshire
Hereford, County of Herefordshire
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AQI 49
Good
8.92μg/m³
PM2.5
32.59μg/m³
PM10
27.98ppb
O3
0.63ppb
SO2
3.63ppb
NO2
0.05ppm
CO
AQI 33
Good
6.04μg/m³
PM2.5
16.18μg/m³
PM10
28.64ppb
O3
0.66ppb
SO2
1.13ppb
NO2
0.06ppm
CO
AQI 33
Good
6.34μg/m³
PM2.5
18.33μg/m³
PM10
23.97ppb
O3
0.95ppb
SO2
3.81ppb
NO2
0.05ppm
CO
AQI 33
Good
5.87μg/m³
PM2.5
17.36μg/m³
PM10
24.92ppb
O3
0.66ppb
SO2
1.45ppb
NO2
0.06ppm
CO
AQI 33
Good
6.36μg/m³
PM2.5
17.89μg/m³
PM10
26.16ppb
O3
0.95ppb
SO2
5.94ppb
NO2
0.05ppm
CO
AQI 54
Moderate
10.69μg/m³
PM2.5
23.90μg/m³
PM10
29.27ppb
O3
0.99ppb
SO2
7.01ppb
NO2
0.05ppm
CO
Air quality and pollutant data for County of Herefordshire, 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 Hereford, County Of Herefordshire is updated every hour for accuracy.
In the past 24 hours, the air quality in Hereford, County Of Herefordshire was at its worst at 08:00:00 on 2026-08-13.
In the last 24 hours, the best air quality in Hereford, County Of Herefordshire was observed at 12:00:00 on 2026-08-14.
As of now, the AQI in Hereford, County Of Herefordshire is 79, indicating Moderate conditions.
Hereford, County Of Herefordshire air has the highest levels of PM2.5.
Poor air quality in Hereford, County Of Herefordshire means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Hereford, County Of Herefordshire are currently 23.913 μg/m3.
The PM10 concentration in Hereford, County Of Herefordshire is 42.764 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Hereford, County Of Herefordshire is 0.055 ppm.
Currently, Hereford, County Of Herefordshire has a sulfur dioxide (SO2) concentration of 0.869 ppb.
The current ozone (O3) level in Hereford, County Of Herefordshire at the moment is 21.433 ppm.
Nitrogen dioxide (NO2) level in Hereford, County Of Herefordshire at the moment is 3.406 ppb.
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