Air quality and weather data from multiple trusted sources, blended into one simple API. Real-time conditions, 10-day forecasts, and health guidance.
Try Interactive Demo →Breathe API is an intelligent aggregation platform that provides both air quality and weather data through a single, unified API. Air quality readings are blended from government stations, community sensors, and atmospheric models. Weather data includes current conditions and a 10-day daily forecast.
Air Quality: Aggregated from 5+ sources (EPA AirNow, PurpleAir, OpenWeatherMap, WAQI, AirVisual)
with intelligent weighting based on source reliability, sensor distance, and data freshness.
Weather: Current conditions (temperature, humidity, wind, pressure, UV, visibility) plus a 10-day
daily forecast with highs/lows, precipitation, and sunrise/sunset times. Powered by Open-Meteo with
OpenWeatherMap fallback.
What makes this API useful for developers and applications
The API analyzes sensors within a customizable radius of your coordinates (default 25km, max 100km) to provide location-specific readings rather than relying solely on distant monitoring stations.
Data is cached for 10 minutes and refreshed automatically. Each request combines the latest available information from multiple sources to provide current air quality readings.
The aggregation algorithm weighs each source based on trust scores, distance, data freshness, and quality level. Government stations receive higher weight (1.0), while community sensors (0.85) and atmospheric models (0.7) contribute proportionally. This approach balances reliability with local specificity.
The API supports requests for any coordinates worldwide, with optimized source priorities for the United States and Canada, and global coverage through international data providers.
Complex pollutant measurements (PM2.5, PM10, O₃, NO₂, etc.) are translated into standardized AQI scores with category labels and plain-language health guidance.
Optional hourly air quality forecasts for the next 96 hours are available by adding the
include_forecast=true parameter to your request.
Current conditions including temperature, feels-like, dew point, humidity, wind speed and direction, pressure, UV index, visibility, and cloud cover. Metric and imperial units supported.
Daily forecasts with high/low temperatures, precipitation probability, wind, UV index, and sunrise/sunset times. Perfect for planning outdoor activities.
Developers and businesses use Breathe API to power their applications
Get weather and air quality from a single API. Temperature, AQI, forecasts, and health guidance in one call.
Help users plan outdoor workouts when air quality is good and stay safe when it's poor.
Monitor air quality for people with asthma, allergies, or other respiratory conditions.
Automatically control air purifiers, windows, and HVAC systems based on outdoor air quality.
Show air quality information on maps to help travelers choose healthier routes.
Send push notifications when air quality becomes unhealthy in a user's area.
Provide air quality insights for properties and neighborhoods.
Educate communities about local air quality trends and environmental health.
Getting air quality data is as simple as 1-2-3
Provide any latitude and longitude coordinates anywhere in the world.
Our system searches multiple trusted sources for air quality data near your location.
Receive blended, accurate AQI scores with health advice and detailed pollutant information.
Use the data in your app, website, or system to help people make informed decisions.
Powered by trusted air quality and weather data providers
Try our interactive demo or check out the developer documentation