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Weather Underground PWS IENGLAND56

Data Quality

Member CW9436 of the Citizen Weather Observer Program (CWOP).

The positioning and calibration of the weather station sensors has been carefully considered to maximize accuracy of the readings. We use CWOP to help make sure our data is accurate.

The following is data reported to CWOP for Chester Weather Station (C9436 in blue). Also included is the reported data for the Met Office meteorological stations at Hawarden Airport (EGNR in purple) and Liverpool John Lennon Airport (EGGP in cyan).


temperature comparison

Relative Humidity

humidity comparison

Dew Point

dew point comparison


barometer comparison

You can see Chester Weather Station's CWOP data graphs here.

You can also see how Chester Weather compares with the others in the CWOP network. This shows the performance of all the CWOP sites. The target quality box is also shown.

This quality checker was developed by Philip Gladstone, CW0003.

CWOP is a private-public partnership with the National Oceanic & Atmospheric Administration. It's three main goals:
1) To collect weather data contributed by citizens.
2) To make this data available for weather services.
3) To provide feedback to the data contributors so that they have the tools to check and improve their data quality.

Citizen Weather Observer Program

Setting Up Our Weather Station


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Chester Weather Station (CWS) is run as an amateur weather station and therefore should not be used as official data.
Whilst every effort is made to keep the data as accurate as possible no guarantee is given that the data meets the requirements of the Meteorological Offices' 'A' Stations.
The weather station data is produced by CWS and CWS claims copyright over all data produced and disseminated by it.
Members of CWS may use the data produced by CWS for non-commercial use and no other purpose.
If CWS data is used according to these licence terms then the data must be acknowledged as belonging to CWS and reproduced with its permission.
The weather station data produced by CWS must not be used for decision making of any kind.
The weather station is privately owned and the owners do not make any claims as to the accuracy of the information collected by the equipment.