Automated Data Plotter

This application dynamically generates many types of graphs derived from various IEM data sources. Feel free to use these generated graphics in whatever way you wish.

Reset App IEM Explorer (Simplified)

1 Select a Chart Type

Choose from available chart types:

2 Configure Chart Options

Select Station:

Month:

Variable to Plot:

Threshold (units of variable):

Threshold Option:

Scale X-Axis:

Image Pixel Size @100 DPI

Image Resolution (DPI) (50 to 500)

Select Output Format:

Plot Description:

Based on IEM archives of METAR reports, this application produces the hourly frequency of a temperature at or above or below a temperature thresold. This application tries to only consider the top of the hour reports.

3 Generated Chart

Based on recent timings, plot generation averages 7 seconds. Please wait while your chart is being generated...

CSV Data Excel Download

If you notice plotting issues with the image above, please contact us and provide the URL address currently shown by your web browser.

IEM Daily Features using this plot

The IEM Daily Features found on this website often utilize plots found on this application. Here is a listing of features referencing this plot type.

28 Jan 2025: Low January Relative Humidities
26 Dec 2024: Above Freezing in December
08 Mar 2023: Below 40 during March
11 Jun 2021: 90s During June
15 Nov 2019: November Hourly Temps
06 Dec 2018: 40+ in December
26 Apr 2017: 70+ in April
14 Jul 2015: 80 at 7 AM