Weather · Forecast
Hourly forecast by weather zone
Seven days of hourly forecast sampled at each ERCOT weather zone — including wind at 100 m and surface irradiance, the two variables that predict wind and solar output and that no NOAA endpoint publishes. Served as the newest view of each hour; every issue is kept. Data by Open-Meteo, CC-BY-4.0.
openmeteo-zone-forecasthourly, 7 days ahead · 1h rows8 entitiesWhat is in it
- Updates
- hourly, 7 days ahead · 1h rows
- Entities
- 8 entities — NORTH_C, COAST, WEST…
- Source
- Open-Meteo (CC-BY-4.0)
- Source timezone
- UTC — every timestamp Dryos serves is UTC
- Coverage
- 31 August 2026 to now
- Rows held
- 575,232
- Primary key
- zone, interval_start_utc, source_published_at_utc
- On the map
- 8 of 8 placed
What it measures
Every value, its unit, and what the source means by it.
- Temperature°C
Forecast air temperature at 2 m.
temperature_c - Wind at hub heightm/s
Forecast wind speed at 100 m — turbine hub height, so this is the column that predicts wind generation.
wind_speed_100m_ms - IrradianceW/m²
Forecast global horizontal irradiance — what predicts solar output. Zero overnight, by definition.
shortwave_radiation_wm2 - Cloud cover%
Forecast total cloud cover.
cloud_cover_pct - Relative humidity%
Forecast relative humidity at 2 m.
relative_humidity_pct - Wind at surfacem/s
Forecast wind speed at 10 m — the height observations report, so this is the column that compares to them.
wind_speed_10m_ms
Columns
Exactly what a request answers with, read from the API rather than written here.
| Column | Type | Description |
|---|---|---|
| interval_start_utcrequired | timestamp | Start of the hour the values describe, UTC.e.g. 2026-08-31T12:00:00Z |
| zonerequired | string | ERCOT weather zone, in the load reports' spelling, so temperature and wind join load and generation without a mapping table.e.g. NORTH_C |
| temperature_crequired | number | Forecast air temperature at 2 m, degrees Celsius.e.g. 31.4 |
| relative_humidity_pctrequired | number | Forecast relative humidity at 2 m, percent.e.g. 48 |
| wind_speed_10m_msrequired | number | Forecast wind speed at 10 m, metres per second — the height surface observations report, so this is the column that compares to them.e.g. 4.2 |
| wind_speed_100m_msrequired | number | Forecast wind speed at 100 m, metres per second. Hub height: this is the column that predicts wind generation, and no NOAA endpoint publishes it.e.g. 8.7 |
| wind_direction_100m_degrequired | number | Forecast wind direction at 100 m, degrees from north.e.g. 165 |
| shortwave_radiation_wm2required | number | Forecast global horizontal irradiance, watts per square metre. The column that predicts solar generation; zero overnight, by definition.e.g. 742 |
| cloud_cover_pctrequired | number | Forecast total cloud cover, percent.e.g. 35 |
| latrequired | number | Latitude of the reading, degrees north. Published by the source, not inferred: this is where the instrument is or the point that was sampled.e.g. 30.19 |
| lonrequired | number | Longitude of the reading, degrees east of Greenwich.e.g. -97.67 |
| source_published_at_utcrequired | timestamp | The vintage: which issue of the forecast this row belongs to. The same hour appears once per issue, and the newest is the current view.e.g. 2026-08-31T13:00:00Z |
| collected_at_utcrequired | timestamp | When Dryos collected this row, UTC. Stamped by the platform, not the collector.e.g. 2026-08-31T13:02:00Z |
Read it
Public, read-only, no key and no sign-up. Relative times stay relative, so a URL keeps working.
The newest rows
curl "https://api.dryos.ai/v1/datasets/openmeteo-zone-forecast/query?node=NORTH_C&limit=12"The catalogue entry — every column, its type and the source
curl "https://api.dryos.ai/v1/datasets/openmeteo-zone-forecast"Full parameters — bucketing, aggregation, filters and search — are on the API reference.
Ask an agent
The same stream through the Model Context Protocol, so Claude, ChatGPT, Cursor or any MCP client can query it directly.
claude mcp add --transport http dryos https://api.dryos.ai/mcpThen ask:
What has Temperature been at NORTH_C over the last 24 hours, and when did it peak?
Setup for every client is on the MCP server page.
How this stream is checked
- Pulled straight from Open-Meteo (CC-BY-4.0) — no reseller in between — and compared against that file before it is served.
- Null means the source did not report it — never zero.
- A reading lands hourly, 7 days ahead; the interval timestamp is the start of the interval, in UTC.
- Every weather timestamp is UTC at the source and at Dryos.
Related streams
- NWS forecast by weather zone
The National Weather Service's own forecast for the same eight zones — the official record, sampled at the same points as the Open-Meteo stream so the two are directly comparable.
reissued through the day · 1h rows8 entitiesnoaa-gridpoint-forecast - Hub-height wind field
Wind speed and direction at 100 m on a one-degree grid across Texas and its surroundings — the field itself, to be drawn rather than charted.
every 3 hours · 1h rows168 entitiesopenmeteo-wind-field - Surface observations
What the weather actually did: temperature, dew point, wind, pressure and visibility from 25 airport stations across the eight ERCOT weather zones.
hourly, plus specials · 1h rows25 entitiesnoaa-station-observations - HRRR national weather field
Temperature, hub-height wind speed and surface irradiance every hour at 19,080 points across the continental United States — the three weather series that load, wind output and solar output are functions of, at one resolution across every grid operator rather than one.
hourly · 1h rows19,080 entitiesnoaa-hrrr-field