Dublin air quality
Ireland · Live AQI and hourly forecast for the next 5 days · updated Sun 01:00 local time
Good
Great air. A perfect time to be outside.
- Next 24 hours
- 28–35US AQI, highest around Sun 08:00
- Best time outside
- Sun 22:00–1:00US AQI about 29
- PM2.5 vs WHO guideline
- 0.2×2.7 µg/m³ over 24 h, guideline 15
- Cigarette equivalent
- ≈ 0.1 a dayBerkeley Earth rule of thumb
- European AQI
- Fairlevel 2 of 6
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Pollutants in Dublin right now
| Pollutant | Now | Next 24 h vs WHO | US AQI band |
|---|---|---|---|
| Fine particles (PM2.5) | 2.7 µg/m³ | 0.2× | Good |
| Coarse particles (PM10) | 7.0 µg/m³ | 0.1× | Good |
| Nitrogen dioxide (NO2) | 4.4 µg/m³ | 0.2× | Good |
| Ozone (O3) | 69 µg/m³ | 0.8× | Good |
| Sulphur dioxide (SO2) | 0.6 µg/m³ | 0.0× | Good |
| Carbon monoxide (CO) | 157 µg/m³ | 0.0× | Good |
| Desert dust | 0 µg/m³ | ||
| Smoke and haze (aerosol optical depth) | 0.14 | ||
| UV index | 0.0 |
“Next 24 h vs WHO” compares the forecast with the World Health Organization’s 2021 guideline levels: 24-hour means of 15 µg/m³ for PM2.5, 45 for PM10, 25 for NO2, 40 for SO2 and 4 mg/m³ for CO, and 100 µg/m³ over 8 hours for ozone. Above 1× is above the guideline.
Next 48 hours
Hourly US AQI. Highest 35 around Sun 08:00, lowest 21 around Mon 10:00.
5-day air quality forecast for Dublin
Daily range of the hourly US AQI, from lowest to highest, on a scale of 0 to 150.
| Day | US AQI | At worst | PM2.5 avg | |
|---|---|---|---|---|
| Sun 27 Sept | 29–35 | 2.7 | ||
| Mon 28 Sept | 21–31 | 4.0 | ||
| Tue 29 Sept | 27–33 | 5.6 | ||
| Wed 30 Sept | 32–34 | 6.0 | ||
| Thu 1 Oct | 30–34 | 5.4 |
Common questions about the air in Dublin
Is the air in Dublin safe today?
Yes. Right now the US AQI in Dublin is 32, which counts as good. Great air. A perfect time to be outside.
When is the best time to be outside in Dublin?
Sun 22:00–1:00. That is the cleanest stretch in the next 24 hours, with the US AQI averaging about 29. The worst hour is around Sun 08:00, at 35.
What is the main pollutant in Dublin?
Ozone (O3). It drives the index right now, at 69 µg/m³. Formed by sunlight acting on traffic and plant emissions. Highest on hot, still afternoons, often downwind of cities.
How does Dublin's air compare with the WHO guideline?
Within the guideline. Over the next 24 hours PM2.5 averages about 2.7 µg/m³, against the World Health Organization's 24-hour guideline of 15 µg/m³. The other pollutants stay within their guideline levels.
How many cigarettes is a day of Dublin's air?
About 0.1 cigarettes. Over the next 24 hours PM2.5 averages about 2.7 µg/m³. By Berkeley Earth's rule of thumb, 22 µg/m³ breathed for a day is roughly one cigarette.
Will air quality in Dublin improve this week?
Monday looks cleanest. Its AQI peaks at 31, against 35 on Sunday, the worst day in the forecast.
Measured near Dublin
| Station | PM2.5 µg/m³ | Measured |
|---|---|---|
| Unnamed sensor Sensor.Community, low-cost sensor | 0.7 | Sun 01:28 |
| Unnamed sensor Sensor.Community, low-cost sensor | 1.1 | Sun 01:28 |
| Unnamed sensor Sensor.Community, low-cost sensor | 0.7 | Sun 01:27 |
Air quality near Dublin
- Manchester 267 km E
- Edinburgh 350 km NE
- London 463 km SE
- Amsterdam 757 km E
- Brussels 775 km E
- Paris 781 km SE
About this forecast
Forecast from CAMS Europe and global via Open-Meteo: the Copernicus Atmosphere Monitoring Service (CAMS) model at about 40 km resolution (10 km inside Europe), refreshed twice a day. Models smooth out street-level peaks, so busy roads and industrial sites can be worse than shown; ground stations, where there are any nearby, show what monitors actually measure. The US AQI follows the US EPA scale and the European AQI the EEA bands. Readings for 53.35°N, 6.26°W, updated 2026-09-27 00:00 UTC.