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)
22
Good
Hereford, County of Herefordshire
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
4.03 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.38 μg/m³
0
55
155
255
425
605+
22.34 ppb
0
55
71
86
201
201+
0.80 ppb
0
36
76
186
605
1005+
1.49 ppb
0
54
101
361
1250
2050+
0.07 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Hereford, County of Herefordshire
Hereford, County of Herefordshire
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AQI 28
Good
3.18μg/m³
PM2.5
9.84μg/m³
PM10
29.95ppb
O3
0.59ppb
SO2
4.14ppb
NO2
0.07ppm
CO
AQI 26
Good
3.01μg/m³
PM2.5
8.07μg/m³
PM10
28.11ppb
O3
0.55ppb
SO2
1.12ppb
NO2
0.08ppm
CO
AQI 26
Good
3.17μg/m³
PM2.5
8.06μg/m³
PM10
28.34ppb
O3
0.56ppb
SO2
3.22ppb
NO2
0.07ppm
CO
AQI 28
Good
3.00μg/m³
PM2.5
7.99μg/m³
PM10
29.79ppb
O3
0.55ppb
SO2
2.11ppb
NO2
0.08ppm
CO
AQI 27
Good
3.20μg/m³
PM2.5
7.99μg/m³
PM10
28.98ppb
O3
0.55ppb
SO2
2.61ppb
NO2
0.07ppm
CO
AQI 26
Good
3.21μg/m³
PM2.5
8.00μg/m³
PM10
28.10ppb
O3
0.51ppb
SO2
4.59ppb
NO2
0.06ppm
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 2025-06-22.
In the last 24 hours, the best air quality in Hereford, County Of Herefordshire was observed at 11:00:00 on 2025-06-23.
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 3.22 μg/m3.
The PM10 concentration in Hereford, County Of Herefordshire is 9.822 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Hereford, County Of Herefordshire is 0.076 ppm.
Currently, Hereford, County Of Herefordshire has a sulfur dioxide (SO2) concentration of 0.533 ppb.
The current ozone (O3) level in Hereford, County Of Herefordshire at the moment is 29.461 ppm.
Nitrogen dioxide (NO2) level in Hereford, County Of Herefordshire at the moment is 3.521 ppb.
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