Upwind Report

Glyphosate use in St. Louis County, Missouri

Estimated farm glyphosate use in St. Louis County, Missouri was 12 pounds per square mile of county land in 2019, lower than 65% of US counties.

Map of St. Louis County, Missouri and nearby counties, coloring each county's cropland by estimated farm glyphosate use per square mile of county land in the 2019 high estimate. Darker colors mean more use.

2019 numbers

Per square mile of county land12lb
US
2,010th of 3,060
Missouri
89th of 114
Per square mile of cropland29lb

Ranks are by use per square mile of county land, on the 2019 high estimate, among US counties with a value. Counties with the same value share a rank.

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A picture of St. Louis County against the US county median, with the source, to post or send.

Since 2000

About the same in 2019 as in 2000: 12 in 2019, 12 in 2000. Pounds per square mile of county land, high estimate.

Every year's numbers
Glyphosate per square mile of county land by year, in pounds
YearLowHigh
20001212
20011010
20021215
20033030
20042222
20052525
20062525
20072527
20081515
20092020
20103030
20113030
20122020
20132929
20143434
20152222
20162424
20171919
20187.37.3
20191212
See St. Louis County on the map

About these numbers

The main number is the county's estimated farm glyphosate use for the year divided by all of its land, water left out. A county with a little farmland can use a lot per square mile of cropland and still have far less in total than a county with more farmland, so the whole-county number is the one the map colors, ranks and compares.

These are county estimates, not records. They don't show which fields were sprayed or how much any one field got.

USGS makes a low and a high estimate, which fill in use that farms didn't report in different ways.

Per square mile of cropland is the same total spread evenly over the county's cropland only, so it's higher than the whole-county number wherever only part of St. Louis County, Missouri is farmland.

Numbers are in pounds per square mile. The source gives kilograms per square kilometer, and 1 kg per km² is about 5.7 pounds per square mile.

Source: Hengl & Brungard from USGS county estimates, 2000–2019 (CC BY 4.0). Land area: US Census Bureau, 2020.

This page shows estimated farm use only. It says nothing about health and is not medical advice.