Air quality in Hafnarfjordur, Iceland today
Mr. Duck’s Air Quality Score
Good air today for Hafnarfjordur, Iceland
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Hafnarfjordur is currently classified as Good. The main pollutant identified is PM10. Four recent measurements were recorded, each indicating a PM10 concentration of approximately 4.2262 µg/m³, which aligns with the reference value used for this assessment. This classification reflects that the observed concentrations are within the limits defined for the Good category.
Data is shown via OpenAQ. The dataset includes four valid observations that support the current assessment. All values are expressed in micrograms per cubic meter. The measurements were taken within the same day and represent the most recent data available. No additional pollutants were reported as dominant in the latest analysis. 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 Hafnarfjörður air‑quality feed draws from three monitoring sites and currently holds eleven individual measurement rows. Five of those rows have been recorded within the last thirty days, while the remaining six are older than a month, so the overall picture mixes recent and dated observations. All five listed pollutants—nitric oxide (NO), nitrogen dioxide (NO₂), particulate matter 10 µm (PM10), particulate matter 2.5 µm (PM2.5) and sulfur dioxide (SO₂)—are represented, but the depth of coverage varies by substance.
For SO₂ the three stations each contributed a recent value (last updated 2026‑02‑10 22:00 UTC). The readings span from a minimum of –1.0 µg/m³ up to 4.52 µg/m³, with a median of about 1.07 µg/m³ and a 10‑percentile near –0.59 µg/m³, indicating a fairly wide spread around the centre of the distribution. NO is recorded at two stations, the newest entry dated 2026‑02‑10 16:00 UTC, and all values are negative, ranging from –0.298 to –0.169 µg/m³; the median (–0.23 µg/m³) sits close to the upper end of that narrow band. NO₂ also comes from two stations with the latest timestamp of 2026‑02‑10 22:00 UTC; its values run from –1.0 to 5.66 µg/m³, a median of 2.33 µg/m³ and a 90‑percentile near 5.0 µg/m³, showing a broader variation than NO. PM10 has its most recent measurement on 2026‑01‑24 14:00 UTC, with a range of –1.0 to 4.23 µg/m³, a median of 1.61 µg/m³ and a 90‑percentile of 3.70 µg/m³. By contrast, PM2.5 provides only a placeholder value of –1.0 µg/m³ from both stations, meaning no usable concentration data are currently available for the finer particulate fraction.
These details reveal that while Hafnarfjörður’s dataset includes all five key pollutants, the freshness and completeness differ: SO₂, NO and NO₂ have very recent entries, PM10 lags by a few weeks, and PM2.5 lacks valid measurements altogether. Consequently, the city’s air‑quality picture can change across locations and times, and the available numbers represent a snapshot that mixes up‑to‑date and older observations.
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 Hafnarfjörður includes four valid measurements and was refreshed recently, updated within 30 days (last update 2026-01-24T14:00:00+00:00). These values represent a snapshot of ambient conditions across the monitoring sites. Air quality can vary by location and time within the city, so the figures may not reflect conditions at every street or moment.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Hafnarfjörður Norðurhella | no2 | 5.663 | µg/m³ | 2026-01-24 14:00 UTC |
| Hafnarfjörður Norðurhella | pm10 | 4.2262 | µg/m³ | 2026-01-24 14:00 UTC |
| Hafnarfjörður Norðurhella | so2 | 4.52 | µg/m³ | 2026-01-24 14:00 UTC |
| Hafnarfjörður Hvaleyrarholt | so2 | 1.0667 | µg/m³ | 2026-01-24 14:00 UTC |