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
7.38 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.87 μg/m³
0
55
155
255
425
605+
27.29 ppb
0
55
71
86
201
201+
0.78 ppb
0
36
76
186
605
1005+
1.42 ppb
0
54
101
361
1250
2050+
0.24 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 26
Good
4.46μg/m³
PM2.5
9.04μg/m³
PM10
27.55ppb
O3
0.62ppb
SO2
1.98ppb
NO2
0.06ppm
CO
AQI 28
Good
5.23μg/m³
PM2.5
9.02μg/m³
PM10
30.08ppb
O3
0.90ppb
SO2
1.11ppb
NO2
0.06ppm
CO
AQI 38
Good
6.70μg/m³
PM2.5
9.99μg/m³
PM10
26.16ppb
O3
0.93ppb
SO2
2.02ppb
NO2
0.06ppm
CO
AQI 44
Good
7.60μg/m³
PM2.5
9.20μg/m³
PM10
29.26ppb
O3
0.90ppb
SO2
1.54ppb
NO2
0.06ppm
CO
AQI 38
Good
6.85μg/m³
PM2.5
16.54μg/m³
PM10
25.15ppb
O3
0.93ppb
SO2
2.14ppb
NO2
0.06ppm
CO
AQI 38
Good
7.01μg/m³
PM2.5
10.05μg/m³
PM10
25.07ppb
O3
0.97ppb
SO2
3.29ppb
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 05:00:00 on 2025-07-23.
In the last 24 hours, the best air quality in Hereford, County Of Herefordshire was observed at 10:00:00 on 2025-07-23.
As of now, the AQI in Hereford, County Of Herefordshire is 27, 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 4.403 μg/m3.
The PM10 concentration in Hereford, County Of Herefordshire is 9.018 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Hereford, County Of Herefordshire is 0.062 ppm.
Currently, Hereford, County Of Herefordshire has a sulfur dioxide (SO2) concentration of 0.909 ppb.
The current ozone (O3) level in Hereford, County Of Herefordshire at the moment is 28.698 ppm.
Nitrogen dioxide (NO2) level in Hereford, County Of Herefordshire at the moment is 1.803 ppb.
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