Real-time air quality index in Harlow, Essex today
Stay updated with real-time air quality in Harlow, Essex 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)
34
Good
Harlow, Essex
Last updated: ... (Local time)
Common air pollutants in Harlow, Essex
Good
Fine
Moderate
Poor
Very poor
Hazardous
Particulate Matter2.5 (PM2.5)
3.28 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
Particulate Matter10 (PM10)
10.47 μg/m³
0
55
155
255
425
605+
Ozone (O3)
36.60 ppb
0
55
71
86
201
201+
Sulfur Dioxide (SO2)
0.45 ppb
0
36
76
186
605
1005+
Nitrogen Dioxide (NO2)
7.31 ppb
0
54
101
361
1250
2050+
Carbon Monoxide (CO)
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Harlow, Essex
Harlow, Essex
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Harlow, Essex air quality map: Real-time AQI near you
Air quality in nearby cities
Sawbridgeworth, Hertfordshire
AQI 34
Good
3.59μg/m³
PM2.5
8.43μg/m³
PM10
36.68ppb
O3
0.41ppb
SO2
8.25ppb
NO2
0.17ppm
CO
Hoddesdon, Hertfordshire
AQI 31
Good
4.52μg/m³
PM2.5
10.69μg/m³
PM10
34.32ppb
O3
0.45ppb
SO2
3.87ppb
NO2
0.17ppm
CO
Epping, Essex
AQI 31
Good
4.39μg/m³
PM2.5
12.22μg/m³
PM10
34.17ppb
O3
0.40ppb
SO2
7.42ppb
NO2
0.17ppm
CO
Ware, Hertfordshire
AQI 32
Good
4.93μg/m³
PM2.5
10.38μg/m³
PM10
34.56ppb
O3
0.42ppb
SO2
8.50ppb
NO2
0.17ppm
CO
Waltham Abbey, Essex
AQI 32
Good
4.74μg/m³
PM2.5
11.35μg/m³
PM10
35.09ppb
O3
0.45ppb
SO2
1.98ppb
NO2
0.17ppm
CO
Cheshunt, Hertfordshire
AQI 32
Good
4.63μg/m³
PM2.5
11.02μg/m³
PM10
34.71ppb
O3
0.45ppb
SO2
3.03ppb
NO2
0.17ppm
CO
How accurate is Essex, UK air quality data?
Air quality measurements for Essex, UK meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Frequently asked questions
How frequently is the air quality data for Harlow, Essex updated?
Air quality data for Harlow, Essex is updated on an hourly basis.
When did Harlow, Essex experience the worst air quality in the last 24 hours?
The worst air quality in Harlow, Essex was recorded at 10:00:00 on 2026-06-28.
When did Harlow, Essex have its best air quality in the last 24 hours?
The best air quality in Harlow, Essex was recorded at 09:00:00 on 2026-06-29.
What is the real-time air quality index for Harlow, Essex?
The real-time air quality index in Harlow, Essex is 34, currently categorized as Good.
Which pollutant is found most often in Harlow, Essex?
The most common pollutant in Harlow, Essex is O3.
What can I do if the air quality in Harlow, Essex is poor?
If the air quality in Harlow, Essex is poor, limit outdoor activities and use a mask to safeguard your health.
What are the current PM2.5 levels in Harlow, Essex?
The measured PM2.5 levels in Harlow, Essex at present are 3.283 μg/m3.
What are the current PM10 levels at Harlow, Essex?
The current PM10 levels in Harlow, Essex are 10.469 μg/m3.
What are the current carbon monoxide (CO) levels at Harlow, Essex?
The current carbon monoxide (CO) level in Harlow, Essex is 0.174 ppm.
What are the current sulfur dioxide (SO2) levels at Harlow, Essex?
The current sulfur dioxide (SO2) levels in Harlow, Essex are 0.454 ppb.
What are the current ozone (O3) levels at Harlow, Essex?
The current ozone (O3) levels at Harlow, Essex is 36.599 ppm.
What are the current nitrogen dioxide (NO2) levels at Harlow, Essex?
The current nitrogen dioxide (NO2) levels at Harlow, Essex is 7.308 ppb.
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