# Digitalno Sarajevo

> Digitalno Sarajevo is a free, non-commercial website by Xevoris Labs that shows the air quality of Sarajevo, Bosnia and Herzegovina, in 3D, hour by hour. It uses only official open data: the FHMZ BiH and Canton Sarajevo monitoring stations (via the European Environment Agency), the U.S. Embassy PM2.5 monitor (AirNow), NOAA weather records, Landsat and Sentinel-2 satellite images and OpenStreetMap. The site is in Bosnian (default) and English and updates automatically every two hours.

Last update of this file: 2026-11-12 00:50 UTC. Latest measured hour: 2026-11-11 23:00:00 (local standard time, UTC+1).

## Hourly PM10 in Sarajevo, 2026-11-11 23:00:00
EU daily limit: 50 µg/m³ (Directive (EU) 2024/2881). Values are unverified real-time data from the EEA.
- Otoka: 71.2 µg/m³ (24-hour mean 86.4 µg/m³)
- Ilijaš: 68.1 µg/m³ (24-hour mean 70 µg/m³)
- Ilidža: 52.6 µg/m³ (24-hour mean 54 µg/m³)
- Vogošća: 40.4 µg/m³ (24-hour mean 53.3 µg/m³)
- Stari Grad: 15.8 µg/m³ (24-hour mean 31.7 µg/m³)
- Ivan Sedlo: 15 µg/m³ (24-hour mean 5.9 µg/m³)
- Bjelave: 8.8 µg/m³ (24-hour mean 27 µg/m³)

## 3-month outlook for PM10 at Sarajevo-Bjelave (issued 2026-11-12)
The outlook uses the same calendar weeks of every winter since 2016, with recent winters weighted more (each year back counts 80 %); the range is from the last five winters. It does not know this winter's weather.
- 2026-11: about 6.9 days above 50 µg/m³ (range 3–10 in the last 5 winters), expected monthly mean 47.3 µg/m³
- 2026-12: about 14.7 days above 50 µg/m³ (range 11–19 in the last 5 winters), expected monthly mean 66.9 µg/m³
- 2027-01: about 15.6 days above 50 µg/m³ (range 9–19 in the last 5 winters), expected monthly mean 71.6 µg/m³
- 2027-02: about 3.6 days above 50 µg/m³ (range 1–8 in the last 5 winters), expected monthly mean 43 µg/m³

## How accurate is the outlook?
Backtest: the same method was run as if it were 10 November 2023, 2024 and 2025, then compared with what the stations measured. Across all stations and pollutants, 121 of 136 monthly forecasts were inside the forecast range. For PM10 at Bjelave: 9 of 12, mean error of the monthly mean 31 %.

## Satellite summer layers
Landsat 8/9 surface temperature from 14 clear days (2025-06-21 to 2026-08-28); Sentinel-2 greenery from 2026-06-27 to 2026-08-11. Surface temperature on the valley floor falls by about 1.14 °C for every 0.1 increase in the vegetation index (NDVI).

## Pages
- [Home and live air map](https://xevorislabs.com/#home)
- [Winter smog](https://xevorislabs.com/#smog)
- [Summer heat](https://xevorislabs.com/#heat)
- [Traffic](https://xevorislabs.com/#traffic)
- [3-month outlook and backtest](https://xevorislabs.com/#outlook)
- [Solutions](https://xevorislabs.com/#solutions)
- [Data and sources](https://xevorislabs.com/#data)
- [About Xevoris Labs](https://xevorislabs.com/#contact)

## Data (JSON, updated with the site)
- [Stations, latest values, last 7 days](https://xevorislabs.com/data/air.json)
- [Daily means since the start of each station](https://xevorislabs.com/data/daily.json)
- [Outlook, backtest and weather](https://xevorislabs.com/data/model.json)

## Sources and licences
- EEA Air Quality Download Service, CC BY 4.0: https://eeadmz1-downloads-webapp.azurewebsites.net/
- U.S. Department of State / AirNow, public domain: https://www.airnow.gov/international/us-embassies-and-consulates/
- NOAA NCEI GHCN-Daily and ISD, public domain: https://www.ncei.noaa.gov/
- Landsat (USGS) and Sentinel-2 (Copernicus), Copernicus DEM, OpenStreetMap (ODbL)

Contact: contact@xevorislabs.com