Iowa Environmental Mesonet

mesonet.agron.iastate.edu ↗

Weather observations, archives and station tools

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SI Score: 80/100
Pricing: Not confirmed
Free plan: Not confirmed
Sign-up required: Not confirmed

united-states weather

Ask SI about Iowa Environmental Mesonet

Answers use saved listing facts and recorded sources.

What it does

Iowa Environmental Mesonet provides observation archives and public weather-data resources maintained at Iowa State University.

For the ASOS archive, select the station/network, variables, dates, timezone and download format. The end date is exclusive. IEM describes this as an as-is historical collection with little quality control; non-US precipitation is unavailable. Its separate one-minute archive is delayed, so an archive extract should not be treated as a live forecast.

Strengths

Station, variable, date, timezone and output-format choices

Best for

Retrieving historical airport observations with explicit time and station scope

Sources

Iowa Environmental Mesonet (Oct 26, 2026)
IEM :: Pest Forecasting Maps (Oct 26, 2026)
IEM :: ASOS/AWOS Network (Oct 26, 2026)
IEM :: Download ASOS/AWOS/METAR Data (Oct 26, 2026)

SI Score

80/100

#1 in Weather

Based on published information. No hands-on task test.

Method 2.0 · Published source review Assessed Oct 26, 2026Score ceiling for this evidence: 84/100.

Product usefulness 80

Evidence

ASOS documentation connects station/network, dates, timezone, variables and format choices to observation downloads, with explicit quality, date-range and coverage limits. This documents a complete archive-retrieval workflow at 80; no request was submitted.

Limits: AI review of saved source passages. No hands-on test, human approval or automatic-provider checker receipt.

Source links and check dates are in Sources and checks below.

Separate website checks

These checks do not add points to the SI Score. They inspect the website's HTML, not the product in use.

Basic website checksunknown

No check recorded.

HTML accessibility checksunknown

No check recorded.

Homepage HTML responseunknown

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Trackers in homepage HTMLunknown

No check recorded.

Page date hintsunknown

No check recorded.

Policy links do not verify a company's conduct. An HTML response time is not application speed. Tracker and accessibility checks miss behavior after page load. Copyright dates do not prove product upkeep.

How the SI Score works →

Unconfirmed details may be unassessed, absent from the pages checked or temporarily unreadable. A missing price does not mean the service is free.

Sources and checks

Supporting pages for product usefulness, site facts, prices and separate website checks. Each record keeps its own date. Reading a page does not establish how well the product performs in use.

mesonet.agron.iastate.edu/
- Product usefulness evidenceChecked Oct 26, 2026
www.mesonet.agron.iastate.edu/ASOS/
- Product usefulness evidenceChecked Oct 26, 2026
mesonet.agron.iastate.edu/request/download.phtml?network=JP__ASOS
- Product usefulness evidenceChecked Oct 26, 2026

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