Air quality in Sundsvall, Sweden today

Mr. Duck’s Air Quality Score

Good air today for Sundsvall, Sweden

⚠️ 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 in Sundsvall is currently classified as Good. The primary pollutant measured is PM2.5, with a reference concentration of 3.74 µg/m³, while PM10 registers at 6.965 µg/m³ based on ten valid observations.

Data are shown via OpenAQ and reflect the latest available readings for the city. 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

The air‑quality dataset for Sundsvall contains measurements for four pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO₂), particulate matter 10 µm or less (PM10) and particulate matter 2.5 µm or less (PM2.5). These data come from three monitoring stations, giving a total of sixteen individual rows. The most recent observations are from 2026‑02‑10 18:00 UTC for PM10, PM2.5 and NO₂, while the latest NO reading dates back to 2024‑03‑11 12:00 UTC, indicating that nitrogen monoxide data are older than the other three pollutants.

Across the stations, PM10 values range from about 4.0 µg/m³ up to 6.97 µg/m³, with a median of roughly 5.60 µg/m³; PM2.5 spans 2.42‑3.87 µg/m³ and centers near 3.37 µg/m³. NO concentrations vary between 1.65 and 6.37 µg/m³, with a median of 6.14 µg/m³, while NO₂ shows the widest spread, from 9.52 to 33.62 µg/m³ and a median around 20.24 µg/m³. The 10th‑percentile figures (about 4.40 µg/m³ for PM10, 2.54 µg/m³ for PM2.5, 2.55 µg/m³ for NO and 11.66 µg/m³ for NO₂) illustrate that most recent readings cluster toward the lower end of each range, whereas the 90th‑percentile values (approximately 6.55 µg/m³ for PM10, 3.82 µg/m³ for PM2.5, 6.32 µg/m³ for NO and 30.94 µg/m³ for NO₂) reveal occasional higher concentrations.

Because the dataset includes only three stations, spatial coverage is limited; conditions can differ across neighborhoods that are not directly monitored. Moreover, the older timestamp for NO means that its recent trend cannot be assessed as reliably as the other pollutants. Overall, the data provide a snapshot of current air quality in Sundsvall but should be interpreted with awareness of these temporal and geographic constraints.

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 data shown are based on ten valid measurements and have been refreshed recently, with the latest update recorded at 2026‑02‑10T18:00:00+00:00 (updated within three days). These values represent a snapshot of air quality across Sundsvall; conditions can differ by specific neighbourhoods and change throughout the day.

OpenAQ station rows