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)
38
Good
Hereford, County of Herefordshire
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.18 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
8.72 μg/m³
0
55
155
255
425
605+
41.36 ppb
0
55
71
86
201
201+
0.38 ppb
0
36
76
186
605
1005+
2.38 ppb
0
54
101
361
1250
2050+
0.08 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 39
Good
4.18μg/m³
PM2.5
8.88μg/m³
PM10
42.17ppb
O3
0.38ppb
SO2
1.72ppb
NO2
0.08ppm
CO
AQI 37
Good
4.17μg/m³
PM2.5
10.93μg/m³
PM10
40.37ppb
O3
0.38ppb
SO2
2.21ppb
NO2
0.08ppm
CO
AQI 35
Good
4.18μg/m³
PM2.5
7.78μg/m³
PM10
38.00ppb
O3
0.38ppb
SO2
2.97ppb
NO2
0.07ppm
CO
AQI 36
Good
4.03μg/m³
PM2.5
10.95μg/m³
PM10
39.02ppb
O3
0.38ppb
SO2
2.15ppb
NO2
0.08ppm
CO
AQI 36
Good
4.20μg/m³
PM2.5
7.78μg/m³
PM10
39.45ppb
O3
0.38ppb
SO2
3.38ppb
NO2
0.07ppm
CO
AQI 37
Good
4.34μg/m³
PM2.5
9.35μg/m³
PM10
40.35ppb
O3
0.38ppb
SO2
2.42ppb
NO2
0.07ppm
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 07:00:00 on 2026-03-29.
In the last 24 hours, the best air quality in Hereford, County Of Herefordshire was observed at 08:00:00 on 2026-03-29.
As of now, the AQI in Hereford, County Of Herefordshire is 38, 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 4.181 μg/m3.
The PM10 concentration in Hereford, County Of Herefordshire is 8.723 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Hereford, County Of Herefordshire is 0.08 ppm.
Currently, Hereford, County Of Herefordshire has a sulfur dioxide (SO2) concentration of 0.382 ppb.
The current ozone (O3) level in Hereford, County Of Herefordshire at the moment is 41.357 ppm.
Nitrogen dioxide (NO2) level in Hereford, County Of Herefordshire at the moment is 2.382 ppb.
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