data.gov.sg real-time APIs

data.gov.sg real-time APIs

Singapore's data.gov.sg publishes a family of real-time APIs (api-open.data.gov.sg) covering weather, air quality and traffic conditions. The API overview page says: "These are specific use-case APIs that allow you to query data such as weather and traffic conditions", and: "All Data.gov.sg APIs are public and can be accessed without an API key for testing purposes. However, if you are using the APIs and datasets for production workflows , we strongly recommend you to use an API key."

Coverage

Real-time readings (air temperature, rainfall, PM2.5 and other weather/air and traffic conditions), confirmed live today via the air-temperature endpoint without a key. A free API key is recommended for production use rather than testing; the rate-limits page says: "The rate limits are reset every 10 seconds - the following rate limits represent the number of API calls that can be made every 10 seconds. If the rate limits are exceeded, you will receive a 429 status error (Too many requests)", and the provider's table shows the v2 Realtime API limit as 6 calls per 10 seconds without an API key, 12 with a Dev API key, and 30 with a Prod API key. History start and update frequency: Not stated.

Verdict

Keyless (for testing) JSON APIs for Singapore real-time weather, air quality and traffic conditions from the national open-data portal: "These are specific use-case APIs that allow you to query data such as weather and traffic conditions". The overview page says: "All Data.gov.sg APIs are public and can be accessed without an API key for testing purposes. However, if you are using the APIs and datasets for production workflows , we strongly recommend you to use an API key." Licensed Custom (Singapore Open Data Licence): "You can use, access, download, copy, distribute, transmit, modify and adapt the datasets, or any derived analyses or applications, whether commercially or non-commercially (“Use”)." Attribution required: "You must include in your products, applications or websites that Use the datasets, a conspicuous notice acknowledging the source of the datasets and including a link to the most recent version of this Licence." This is a separate product from the live singapore-mpa-maritime-statistics entry, which covers one MPA vessel-arrivals/bunker-sales dataset on the same portal rather than this real-time API family. Rate limits (rate-limits page): "The rate limits are reset every 10 seconds - the following rate limits represent the number of API calls that can be made every 10 seconds. If the rate limits are exceeded, you will receive a 429 status error (Too many requests)" The provider's table shows the v2 Realtime API limit as 6 calls per 10 seconds without an API key, 12 with a Dev API key, and 30 with a Prod API key. Signal Lab links only.