Current air quality index in Halstead, Essex today
Stay updated with real-time air quality in Halstead, 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)
30
Good
Halstead, Essex
Last updated: ... (Local time)
Major air pollutants in Halstead, Essex
Good
Fine
Moderate
Poor
Very poor
Hazardous
Particulate Matter2.5 (PM2.5)
4.38 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
Particulate Matter10 (PM10)
9.11 μg/m³
0
55
155
255
425
605+
Ozone (O3)
32.13 ppb
0
55
71
86
201
201+
Sulfur Dioxide (SO2)
0.99 ppb
0
36
76
186
605
1005+
Nitrogen Dioxide (NO2)
2.64 ppb
0
54
101
361
1250
2050+
Carbon Monoxide (CO)
0.04 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Halstead, Essex
Halstead, Essex
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Air quality in nearby cities
Braintree, Essex
AQI 36
Good
5.84μg/m³
PM2.5
13.46μg/m³
PM10
39.30ppb
O3
1.32ppb
SO2
4.67ppb
NO2
0.34ppm
CO
Sudbury, Suffolk
AQI 33
Good
6.47μg/m³
PM2.5
11.78μg/m³
PM10
36.23ppb
O3
1.40ppb
SO2
1.08ppb
NO2
0.34ppm
CO
Witham, Essex
AQI 35
Good
6.16μg/m³
PM2.5
11.65μg/m³
PM10
38.04ppb
O3
1.30ppb
SO2
2.42ppb
NO2
0.34ppm
CO
Colchester, Essex
AQI 38
Good
7.00μg/m³
PM2.5
12.75μg/m³
PM10
39.65ppb
O3
1.28ppb
SO2
2.54ppb
NO2
0.34ppm
CO
Haverhill, Suffolk
AQI 38
Good
6.89μg/m³
PM2.5
15.62μg/m³
PM10
38.96ppb
O3
1.53ppb
SO2
0.93ppb
NO2
0.34ppm
CO
Great Dunmow, Essex
AQI 38
Good
7.30μg/m³
PM2.5
16.14μg/m³
PM10
36.70ppb
O3
1.36ppb
SO2
1.11ppb
NO2
0.32ppm
CO
How accurate is Essex, UK air quality data?
The air quality data for Essex, UK is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Frequently asked questions
How frequently does the air quality data for Halstead, Essex get updated?
Air quality updates for Halstead, Essex are available every hour.
What time in the past 24 hours saw the poorest air quality in Halstead, Essex?
Halstead, Essex experienced its worst air quality at 02:00:00, 2025-06-22.
When was air quality in Halstead, Essex the best over the past 24 hours?
The best air quality in Halstead, Essex was observed at 12:00:00 on 2025-06-23.
What is the air quality in Halstead, Essex right now?
The air quality in Halstead, Essex right now is Good, with an AQI of 33.
What pollutant is most frequently found in Halstead, Essex?
In Halstead, Essex, PM2.5 is the most frequently found pollutant.
What can I do if the air quality in Halstead, Essex is poor?
When air quality in Halstead, Essex is compromised, staying indoors and wearing a mask can reduce health risks.
What is the PM2.5 concentration in Halstead, Essex right now?
Halstead, Essex currently has a PM2.5 concentration of 6.166 μg/m3.
What is the current level of PM10 in Halstead, Essex?
Halstead, Essex currently has a PM10 concentration of 11.779 μg/m3.
What is the current level of carbon monoxide (CO) in Halstead, Essex?
The current carbon monoxide (CO) level in Halstead, Essex is 0.345 ppm.
What is the current level of sulfur dioxide (SO2) in Halstead, Essex?
The current sulfur dioxide (SO2) concentration in Halstead, Essex is 1.369 ppb.
What is the current level of ozone (O3) in Halstead, Essex?
Halstead, Essex currently has an ozone (O3) concentration of 35.218 ppm.
What is the current level of nitrogen dioxide (NO2) in Halstead, Essex?
The current level of nitrogen dioxide (NO2) in Halstead, Essex is 1.077 ppb.
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