Real-time air quality index in Colchester, Essex today
Stay updated with real-time air quality in Colchester, 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)
54
Moderate
Colchester, Essex
Last updated: ... (Local time)
Major air pollutants in Colchester, Essex
Good
Fine
Moderate
Poor
Very poor
Hazardous
Particulate Matter2.5 (PM2.5)
10.57 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
Particulate Matter10 (PM10)
21.37 μg/m³
0
55
155
255
425
605+
Ozone (O3)
50.36 ppb
0
55
71
86
201
201+
Sulfur Dioxide (SO2)
1.31 ppb
0
36
76
186
605
1005+
Nitrogen Dioxide (NO2)
7.63 ppb
0
54
101
361
1250
2050+
Carbon Monoxide (CO)
0.07 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Colchester, Essex
Colchester, Essex
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Colchester, Essex air quality map: Stay updated on AQI near you
Air quality in nearby cities
Halstead, Essex
AQI 42
Good
4.61μg/m³
PM2.5
10.97μg/m³
PM10
44.97ppb
O3
0.90ppb
SO2
3.99ppb
NO2
0.29ppm
CO
Sudbury, Suffolk
AQI 39
Good
4.62μg/m³
PM2.5
9.91μg/m³
PM10
42.01ppb
O3
0.91ppb
SO2
4.06ppb
NO2
0.29ppm
CO
Witham, Essex
AQI 34
Good
4.36μg/m³
PM2.5
11.33μg/m³
PM10
36.58ppb
O3
0.86ppb
SO2
4.01ppb
NO2
0.29ppm
CO
ClactononSea, Essex
AQI 39
Good
4.33μg/m³
PM2.5
9.37μg/m³
PM10
42.20ppb
O3
0.85ppb
SO2
3.68ppb
NO2
0.29ppm
CO
Braintree, Essex
AQI 31
Good
4.64μg/m³
PM2.5
11.19μg/m³
PM10
33.05ppb
O3
0.87ppb
SO2
3.40ppb
NO2
0.29ppm
CO
Maldon, Essex
AQI 27
Good
4.83μg/m³
PM2.5
8.57μg/m³
PM10
25.26ppb
O3
0.82ppb
SO2
3.27ppb
NO2
0.29ppm
CO
How accurate is Essex, UK air quality data?
Air quality and pollutant data for Essex, 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
Frequently asked questions
How often is air quality information updated for Colchester, Essex?
The air quality information for Colchester, Essex is updated every hour for accuracy.
What time in the last 24 hours was the air quality in Colchester, Essex at its worst?
In the past 24 hours, the air quality in Colchester, Essex was at its worst at 07:00:00 on 2025-06-15.
When did Colchester, Essex experience the best air quality in the last 24 hours?
In the last 24 hours, the best air quality in Colchester, Essex was observed at 12:00:00 on 2025-06-16.
What is the AQI in Colchester, Essex right now?
As of now, the AQI in Colchester, Essex is 37, indicating Good conditions.
What is the most common type of pollution in Colchester, Essex?
Colchester, Essex air has the highest levels of O3.
What should I do in case of poor air quality in Colchester, Essex?
Poor air quality in Colchester, Essex means it's advisable to stay indoors and wear a mask for your protection.
What is the PM2.5 level in Colchester, Essex at the moment?
PM2.5 levels in Colchester, Essex are currently 4.385 μg/m3.
What is the PM10 level in Colchester, Essex at the moment?
The PM10 concentration in Colchester, Essex is 8.909 μg/m3 at the moment.
What is the carbon monoxide (CO) level in Colchester, Essex at the moment?
The current carbon monoxide (CO) concentration in Colchester, Essex is 0.288 ppm.
What is the sulfur dioxide (SO2) level in Colchester, Essex at the moment?
Currently, Colchester, Essex has a sulfur dioxide (SO2) concentration of 0.862 ppb.
What is the ozone (O3) level in Colchester, Essex at the moment?
The current ozone (O3) level in Colchester, Essex at the moment is 40.464 ppm.
What is the nitrogen dioxide (NO2) level in Colchester, Essex at the moment?
Nitrogen dioxide (NO2) level in Colchester, Essex at the moment is 3.632 ppb.
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