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)
27
Good
Hereford, County of Herefordshire
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.10 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.28 μg/m³
0
55
155
255
425
605+
18.57 ppb
0
55
71
86
201
201+
0.59 ppb
0
36
76
186
605
1005+
3.91 ppb
0
54
101
361
1250
2050+
0.53 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 38
Good
6.53μg/m³
PM2.5
17.81μg/m³
PM10
11.78ppb
O3
0.76ppb
SO2
6.57ppb
NO2
0.63ppm
CO
AQI 33
Good
6.25μg/m³
PM2.5
11.53μg/m³
PM10
9.00ppb
O3
0.71ppb
SO2
5.25ppb
NO2
0.63ppm
CO
AQI 27
Good
4.83μg/m³
PM2.5
7.19μg/m³
PM10
21.01ppb
O3
0.76ppb
SO2
4.84ppb
NO2
0.63ppm
CO
AQI 38
Good
6.87μg/m³
PM2.5
12.68μg/m³
PM10
28.30ppb
O3
0.71ppb
SO2
4.80ppb
NO2
0.63ppm
CO
AQI 38
Good
7.14μg/m³
PM2.5
18.55μg/m³
PM10
15.71ppb
O3
0.76ppb
SO2
4.83ppb
NO2
0.63ppm
CO
AQI 27
Good
5.42μg/m³
PM2.5
16.41μg/m³
PM10
14.28ppb
O3
0.76ppb
SO2
13.06ppb
NO2
0.63ppm
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 01:00:00 on 2026-02-12.
In the last 24 hours, the best air quality in Hereford, County Of Herefordshire was observed at 05:00:00 on 2026-02-11.
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 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 5.1 μg/m3.
The PM10 concentration in Hereford, County Of Herefordshire is 14.277 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Hereford, County Of Herefordshire is 0.531 ppm.
Currently, Hereford, County Of Herefordshire has a sulfur dioxide (SO2) concentration of 0.59 ppb.
The current ozone (O3) level in Hereford, County Of Herefordshire at the moment is 18.568 ppm.
Nitrogen dioxide (NO2) level in Hereford, County Of Herefordshire at the moment is 3.907 ppb.
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