NASA climate heat-extreme signals (daily anomaly flags, heatwave streaks, forecasts)

Name: NASA climate heat-extreme signals (daily anomaly flags, heatwave streaks, forecasts)
Creator: Climate Heat Signals (derived)
License: https://www.earthdata.nasa.gov/engage/open-data-services-and-software/data-and-information-policy
Keywords: climate, temperature, heatwave, extreme-weather, anomaly-detection, forecasting, signals

Daily heat-extreme signals derived from NASA POWER daily weather for 54 world cities (2020-01-01 to yesterday): 3-sigma heat-anomaly flags against day-of-year climatology, heatwave streak counts, 30-day temperature volatility, 63-day warming momentum, naive seasonal 1-month forecasts and a per-day cross-city heat-anomaly rank. Cities are mapped to ISO country codes so the signals join cleanly with country-keyed macro data. Raw weather: NASA POWER.

Source: Climate Heat Signals (derived)132,408 rowsUpdated: 9/21/2026

climatetemperatureheatwaveextreme-weatheranomaly-detectionforecastingsignals

Quality

99.9

Attribution

NASA POWER (derived signals by Frontier Data Hub)

Schema

Column	Type	Description
date	string	Observation date from the POWER API response keys. Daily temporal keys are YYYYMMDD.
country	string	Canonical English short name of the city country (ISO 3166-1).
country_code	string
city	string	Name of the world city the point location represents (curated by the raw connector; not part of the POWER API response).
series_id	string
series_label	string
value	float	Temperature at 2 Meters Maximum — POWER API parameter T2M_MAX (community RE). (unit: C)
anomaly_flag	integer
heatwave_streak	integer
volatility_30d	float
momentum_3m	float
forecast_1m	float
rank	integer

Sample rows

date	country	country_code	city	series_id	series_label	value	volatility_30d	momentum_3m	forecast_1m	rank
2020-01-01	Ethiopia	ETH	Addis Ababa	NASA_POWER.ADDIS_ABABA.T2M_MAX_SIGNALS	Daily max temperature heat signals — Addis Ababa (derived from NASA POWER)	23.66	—	—	23.310441176470587	17
2020-01-01	Algeria	DZA	Algiers	NASA_POWER.ALGIERS.T2M_MAX_SIGNALS	Daily max temperature heat signals — Algiers (derived from NASA POWER)	14.11	—	—	16.08308823529412	46
2020-01-01	Netherlands	NLD	Amsterdam	NASA_POWER.AMSTERDAM.T2M_MAX_SIGNALS	Daily max temperature heat signals — Amsterdam (derived from NASA POWER)	1.64	—	—	7.14485294117647	52
2020-01-01	Greece	GRC	Athens	NASA_POWER.ATHENS.T2M_MAX_SIGNALS	Daily max temperature heat signals — Athens (derived from NASA POWER)	11.99	—	—	15.005735294117647	47
2020-01-01	New Zealand	NZL	Auckland	NASA_POWER.AUCKLAND.T2M_MAX_SIGNALS	Daily max temperature heat signals — Auckland (derived from NASA POWER)	22.37	—	—	22.501470588235293	29

Download sample data

Download the full sample snapshot for this dataset (sample rows, not the complete dataset).

Download sample CSV Download sample JSON

Use with an LLM

Point any LLM at the metadata endpoint — the documentation above is machine-readable too (JSON-LD + Croissant).

cURL

curl "https://datazimuts.com/v1/datasets/climate_signals/nasa_climate_heat_signals" | jq '{title, rows, columns_count, license}'

Python

import requests

ds = requests.get("https://datazimuts.com/v1/datasets/climate_signals/nasa_climate_heat_signals").json()
print(ds["title"], ds["rows"], "rows")

# Sample rows for an LLM context window
for row in ds.get("sample_rows", [])[:5]:
    print(row)

API endpoint: https://datazimuts.com/v1/datasets/climate_signals/nasa_climate_heat_signals

Tip: fetch /llms.txt for the full machine-readable catalog.