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Air quality

GET /AirQuality returns the current air quality forecast for London, including pollution index levels and health advice for sensitive groups.

Operation​

MethodGET
Path/AirQuality
Base URLhttps://api.tfl.gov.uk

Parameters​

None. The endpoint returns the current forecast without any required input.

Responses​

CodeDescription
200Success — JSON object with forecast periods and pollutant levels.
429Rate limited — slow down; see Authentication.
500Server error — retry with backoff.

Example request​

curl "https://api.tfl.gov.uk/AirQuality"

Example response (abbreviated)​

{
  "updatePeriod": "daily",
  "forecastURL": "https://www.londonair.org.uk/forecast",
  "currentForecast": [
    {
      "forecastType": "Current",
      "forecastID": "low",
      "forecastBand": "Low",
      "forecastSummary": "Low air pollution forecast valid...",
      "nO2Band": "Low",
      "o3Band": "Low",
      "pM10Band": "Low",
      "pM25Band": "Low",
      "sO2Band": "Low"
    }
  ]
}

Forecast band values are typically Low, Moderate, High, or Very High. Parse defensively — additional properties may be present.