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)
28
Good
Hereford, County of Herefordshire
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.00 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.07 μg/m³
0
55
155
255
425
605+
29.86 ppb
0
55
71
86
201
201+
0.56 ppb
0
36
76
186
605
1005+
4.82 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Hereford, County of Herefordshire
Hereford, County of Herefordshire
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AQI 26
Good
3.85μg/m³
PM2.5
10.12μg/m³
PM10
27.52ppb
O3
0.49ppb
SO2
4.41ppb
NO2
0.17ppm
CO
AQI 28
Good
3.81μg/m³
PM2.5
9.70μg/m³
PM10
29.57ppb
O3
0.49ppb
SO2
1.12ppb
NO2
0.17ppm
CO
AQI 24
Good
3.77μg/m³
PM2.5
8.67μg/m³
PM10
26.14ppb
O3
0.59ppb
SO2
7.07ppb
NO2
0.17ppm
CO
AQI 28
Good
3.63μg/m³
PM2.5
9.46μg/m³
PM10
30.43ppb
O3
0.49ppb
SO2
2.31ppb
NO2
0.17ppm
CO
AQI 25
Good
3.78μg/m³
PM2.5
8.69μg/m³
PM10
26.67ppb
O3
0.60ppb
SO2
5.03ppb
NO2
0.17ppm
CO
AQI 29
Good
3.81μg/m³
PM2.5
9.19μg/m³
PM10
31.28ppb
O3
0.59ppb
SO2
5.45ppb
NO2
0.17ppm
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 11:00:00 on 2026-06-28.
In the last 24 hours, the best air quality in Hereford, County Of Herefordshire was observed at 08:00:00 on 2026-06-29.
As of now, the AQI in Hereford, County Of Herefordshire is 28, indicating Good conditions.
Hereford, County Of Herefordshire air has the highest levels of O3.
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 4 μg/m3.
The PM10 concentration in Hereford, County Of Herefordshire is 10.075 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Hereford, County Of Herefordshire is 0.174 ppm.
Currently, Hereford, County Of Herefordshire has a sulfur dioxide (SO2) concentration of 0.557 ppb.
The current ozone (O3) level in Hereford, County Of Herefordshire at the moment is 29.855 ppm.
Nitrogen dioxide (NO2) level in Hereford, County Of Herefordshire at the moment is 4.82 ppb.
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