Air quality
Air quality in Napier today
Updated
Good (US AQI 18) Air quality is satisfactory and poses little or no risk; a good time for outdoor activity. Model estimate for Mon, Oct 26, 2:00 pm (01:00 UTC).
Live AQI, PM2.5, PM10 and ozone for Napier, Hawke's Bay Region, New Zealand, with a 48-hour forecast and the best time to be outside.
- US AQI now
- 18 Good
- PM2.5
- 1.9 µg/m³ 0.1× WHO 24-h guideline
- PM10
- 2.7 µg/m³
- Ozone
- 62 µg/m³
- Dominant pollutant
- ozone sub-index 18
- Best hour today
- 2:00 pm AQI 18
- European AQI
- 21
Air quality in Napier right now
Right now the modelled US Air Quality Index for Napier, Hawke's Bay Region, New Zealand is 18, which falls in the "Good" band (up to 50). Air quality is satisfactory and poses little or no risk; a good time for outdoor activity.
The index is driven mainly by ozone, whose own sub-index is 18. Ozone usually peaks in the afternoon on sunny days and falls back after sunset.
PM2.5 is 1.9 µg/m³, within the WHO 24-hour guideline of 15 µg/m³; PM10 is 2.7 µg/m³ against a guideline of 45; ozone is 62 µg/m³ (below the WHO 8-hour level of 100); nitrogen dioxide is 0.2 µg/m³ (below the 24-hour guideline of 25).
Also this hour: UV index 7.8 (high: sun protection advised), carbon monoxide 70 µg/m³.
NASA FIRMS shows 5 fire hotspots within 300 km in the last day (nearest about 97 km), but particle levels are not elevated enough to point to smoke right now.
Napier AQI forecast: next 48 hours
Over the next 24 hours the AQI is forecast to range from 18 around Mon 2:00 pm to 28 around Mon 7:00 pm, staying "Good" throughout.
The following day looks similar, averaging about 21.
| Local time (Pacific/Auckland) | US AQI | Category | PM2.5 µg/m³ | PM10 µg/m³ | Ozone µg/m³ |
|---|---|---|---|---|---|
| Mon 2:00 pm | 18 | Good | 1.9 | 3 | 62 |
| Mon 5:00 pm | 26 | Good | 2.5 | 4 | 61 |
| Mon 8:00 pm | 28 | Good | 2.7 | 4 | 53 |
| Mon 11:00 pm | 26 | Good | 3.1 | 5 | 50 |
| Tue 2:00 am | 24 | Good | 1.7 | 3 | 49 |
| Tue 5:00 am | 23 | Good | 1.2 | 2 | 51 |
| Tue 8:00 am | 24 | Good | 1.8 | 3 | 54 |
| Tue 11:00 am | 24 | Good | 0.5 | 1 | 49 |
| Tue 2:00 pm | 24 | Good | 0.2 | 0 | 51 |
| Tue 5:00 pm | 24 | Good | 1.7 | 2 | 53 |
| Tue 8:00 pm | 23 | Good | 6.2 | 10 | 43 |
| Tue 11:00 pm | 22 | Good | 4.3 | 7 | 38 |
| Wed 2:00 am | 19 | Good | 5.4 | 9 | 37 |
| Wed 5:00 am | 17 | Good | 5.8 | 9 | 31 |
| Wed 8:00 am | 19 | Good | 6.1 | 10 | 33 |
| Wed 11:00 am | 21 | Good | 3.9 | 6 | 43 |
| Wed 2:00 pm | 24 | Good | 3.1 | 5 | 46 |
Every third hour of the CAMS forecast via Open-Meteo. US AQI uses rolling averages (24 h for particles, 8 h for ozone), so it moves more slowly than the hourly concentrations.
Best time to be outside in Napier today
Between 6 am and 9 pm local time, the cleanest air today is forecast around 2:00 pm (AQI 18, Good) and the worst around 7:00 pm (AQI 28). That is a swing of 10 points, so a run or walk around 2:00 pm is noticeably better.
Napier vs the rest of New Zealand
Across 10 New Zealand cities we track, the average US AQI right now is 23 (Good). Napier at 18 is 5 points cleaner than average.
For context, the median across 3,556 cities worldwide is 58.
Air quality in cities near Napier
| City | Distance | US AQI | Category | PM2.5 µg/m³ |
|---|---|---|---|---|
| Hastings, Hawke's Bay Region | 17 km | 18 | Good | 2.1 |
| Hamilton, Waikato Region | 237 km | 21 | Good | 2.9 |
| New Plymouth | 248 km | 30 | Good | 6.1 |
| Wellington | 269 km | 25 | Good | 5.3 |
| Manukau City | 330 km | 26 | Good | 3.2 |
| Auckland | 349 km | 26 | Good | 3.2 |
| Nelson | 365 km | 19 | Good | 3.6 |
| Stoke | 372 km | 19 | Good | 3.6 |
Model vs measured
We found no measured PM2.5 sensor cell within 25 km of Napier, so the numbers on this page are model estimates. Models capture regional pollution well but can miss very local sources such as a busy road or a nearby fire.
Advice for sensitive groups
With the AQI at 18, there is no need for sensitive groups to change plans. People with asthma should still carry their reliever inhaler as usual.
What the US AQI numbers mean
| US AQI | Category | What it means |
|---|---|---|
| 0-50 | Good | Air quality is satisfactory and poses little or no risk; a good time for outdoor activity. |
| 51-100 | Moderate | Acceptable for most people. Unusually sensitive people should consider shortening long or heavy exertion outdoors. |
| 101-150 | Unhealthy for Sensitive Groups | People with heart or lung disease, older adults, children and teens should cut back on prolonged or heavy exertion outdoors. |
| 151-200 | Unhealthy | Everyone should reduce prolonged or heavy exertion outdoors; sensitive groups should avoid it and keep windows closed. |
| 201-300 | Very Unhealthy | Health alert: everyone should avoid prolonged or heavy exertion outdoors, and sensitive groups should stay indoors. |
| 301-500 | Hazardous | Emergency conditions: everyone should avoid all outdoor physical activity and stay indoors with filtered air if possible. The scale tops out at 500; heavier dust or smoke is shown as 500. |
Values on this page are modelled by CAMS (Copernicus) and served by Open-Meteo; they are estimates for the area around the city centre, not readings from an official monitor.
Nearby cities
More for Napier
Air quality elsewhere
Data: Open-Meteo Air Quality API, Copernicus Atmosphere Monitoring Service (CAMS), NASA FIRMS.