Air quality in Budapest, Hungary today

Mr. Duck’s Air Quality Score

Unhealthy for sensitive groups for Budapest, Hungary

⚠️ This website is currently under active development. Some data may be incomplete or temporarily inaccurate. For health-critical decisions, please verify information through official government or environmental sources.

Categories follow US EPA AQI breakpoints for PM (estimate from latest valid measurements; this project does not compute EPA NowCast/24-hour AQI yet).

This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.

Air quality today

The air quality today in Budapest is classified as USG. The primary pollutant identified is PM2.5, with a measured concentration of 42.08 µg/m³. In addition, the PM10 level is recorded at 26.0 µg/m³ based on the latest data set.

A total of 38 valid measurements contributed to these values, which are displayed via OpenAQ. This page is informational; for health guidance, use official sources such as EPA AirNow or WHO.

Latest sensor values

PM categories follow US EPA AQI breakpoints, shown here as an estimate derived from the latest valid measurements (this project does not compute EPA NowCast/24-hour AQI yet).

What the data includes

Budapest’s open‑air quality feed contains data from 105 measurement rows collected at 22 monitoring sites across the city. The dataset includes eight pollutants and two meteorological variables: carbon monoxide (CO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter 1 (PM₁), particulate matter 10 (PM₁₀), particulate matter 2.5 (PM₂.₅), sulfur dioxide (SO₂), relative humidity, and temperature (the latter is present but not shown in the summary). The most recent observations for every parameter were recorded on 2026‑02‑10 at 20:00 UTC, so the newest values are less than three days old. However, overall freshness varies: 40 rows have data from the last three days, while 41 rows are older than a month and 23 rows lack a recent timestamp, indicating that some locations may not reflect current conditions.

The coverage of pollutants is uneven. CO, NO₂, O₃, PM₁₀ and PM₂.5 each have around 14–19 recent rows, providing a fairly broad view of city‑wide concentrations. In contrast, PM₁ and relative humidity are reported from only three rows, limiting spatial detail for these variables. Median values show typical urban levels: CO sits at 365 µg/m³ (range 20 – 1 188 µg/m³), NO₂ at 17 µg/m³ (0.3 – 99.5 µg/m³), O₃ at 37 µg/m³ (0.9 – 80.2 µg/m³), PM₁₀ at 19 µg/m³ (5 – 90 µg/m³) and PM₂.5 at 16 µg/m³ (≈2.7 – 42 µg/m³). Sulfur dioxide is low, with a median of 3.5 µg/m³ (1.13 – 19.2 µg/m³), while relative humidity hovers around 48 % (47.6 – 53.4 %). These figures illustrate that most pollutants have a moderate spread, but the limited number of stations for PM₁ and humidity means local variations may not be captured.

Because many rows are older or lack recent timestamps, the dataset does not provide a fully up‑to‑date picture for every part of Budapest. Conditions can differ between neighborhoods and over short time spans, so users should consider both the breadth of station coverage and the age of individual measurements when interpreting the data.

Learn more about sources and filtering: About the data.

Trusted references: WHO (Air pollution) · US EPA AirNow · European Environment Agency (Air)

Latest sensor values (bars)

PM categories follow US EPA AQI breakpoints, shown here as an estimate derived from the latest valid measurements (this project does not compute EPA NowCast/24-hour AQI yet).

Data notes

The dataset for Budapest currently includes 38 valid measurements and is updated within 3 days, with the most recent data recorded at 2026‑02‑10T20:00:00+00:00. These values represent a snapshot of conditions across the monitoring network; air quality can differ by location and time within the city, so individual experiences may vary from the figures shown here.

OpenAQ station rows