Air quality in Nisa
Portalegre · Alto Alentejo · all municipalities
MODELLED — averaged over the 580 one-kilometre cells inside Nisa for 2024, weighted by the 5,999 people who live in them, so a large empty concelho is scored by its town rather than by its moorland. Weighted by land area instead it would be 59/100. An address inside it can still sit well above or below this figure, which is what the address lookup is for.
Modelled annual values, 2024
| Pollutant | Where people live | Range across the area | 2021 |
|---|---|---|---|
| PM2.5 | 5.6µg/m³ | 4.3 – 6.5 | 5.2 |
| PM10 | 13.8µg/m³ | 12.4 – 15.3 | 12.7 |
| NO₂ | 5.0µg/m³ | 1.3 – 7.6 | 2.8 |
| O₃ | 110.0µg/m³ | 107.9 – 113.8 | 111.1 |
MODELLED — EEA / ETC-HE 1 km European air quality maps. The first column is the population-weighted mean, what a resident typically breathes. The range shows the cleanest and dirtiest cell anywhere inside the boundary, which is usually the more useful number: it is the spread a buyer is choosing between. Ozone is the 93.2nd percentile of the daily maximum 8-hour mean, not an annual mean.
Fine particles under 2.5 micrometres (PM2.5), modelled, four years
Nitrogen dioxide (NO₂), modelled, four years
MODELLED — the area mean in each year's map. Four years is not a trend. Weather moves these numbers between years by more than most policy does, and the 2021 and 2022 maps were produced with a different input mix from the 2023 and 2024 ones.
What the monitors near Nisa have measured
There is no official monitoring station within 60 km of here with enough data to draw. Portugal has 71 stations in the European network, and large parts of the interior and the islands are far from any of them. The modelled figures above are all we have for this place.
Source: European Environment Agency Air Quality Download Service.
What is near this address
Traffic
- We could not find a motorway, trunk road or primary road near enough to measure.
Distance measured from this location to the nearest road tagged as a motorway, trunk or primary road in OpenStreetMap. © OpenStreetMap contributors, ODbL. Nitrogen dioxide from traffic falls off within a few hundred metres of a busy road.
Industry within 10 km
- No facility within 10 km reports a release of the pollutants that affect local air. That register only covers large installations above a European reporting threshold, so smaller local sources — a quarry, a bakery, a fleet depot, domestic wood burning — will not appear at all.
REPORTED BY THE OPERATOR — European Industrial Emissions Portal (European Environment Agency), reporting year 2024, air releases in tonnes per year as the operator declared them. Ranked by the total of the pollutants that affect local air; carbon dioxide is deliberately excluded because it is a climate pollutant and would otherwise dominate the ranking. A facility being listed is not a statement that it affects this address.
Known projects nearby
This is a hand-curated list with sources, not a forecast and not a model. We have not estimated how much any of these would change the air. The list is small and certainly incomplete: it holds 15 entries for the whole country. Anything genuinely local — a quarry, a new estate road, a planning application — will not be here, and a buyer should still ask the council.
Nothing on our list is within 15 km of here. That means nothing we have written down, not that nothing is planned — see the caution below.
Nearby councils in Alto Alentejo
| Council | Rating | PM2.5 | NO₂ |
|---|---|---|---|
| Marvão | 93 | 4.3 | 2.2 |
| Gavião | 86 | 4.7 | 1.8 |
| Crato | 83 | 4.8 | 3.1 |
| Castelo de Vide | 82 | 4.5 | 2.5 |
| Alter do Chão | 80 | 5.2 | 3.5 |
| Arronches | 80 | 5.2 | 3.8 |
| Avis | 80 | 5.4 | 3.4 |
| Monforte | 79 | 5.3 | 4.0 |
| Sousel | 78 | 5.5 | 4.1 |
| Fronteira | 77 | 5.4 | 4.0 |
| Ponte de Sor | 77 | 5.1 | 2.3 |
| Portalegre | 77 | 4.7 | 3.0 |
| Campo Maior | 65 | 5.7 | 4.3 |
| Elvas | 63 | 5.8 | 4.3 |
MODELLED — same 1 km maps, same year, area means.
Sources and what they cannot tell you
- Measured history — European Environment Agency Air Quality Download Service: 19,038,066 validated hourly observations from Portugal's 71 stations, 2013–2026. Station names from APA QualAr. A station is not your street. Nitrogen dioxide in particular varies by hundreds of per cent over a few hundred metres.
- Modelled values at the address — the EEA / ETC-HE 1 km European air quality maps, 2024 and the three years before it. A 1 km cell is an average over a square kilometre. It cannot see one side of a street being busier than the other, and it will understate a very local source and overstate a very local clean spot.
- Industry — European Industrial Emissions Portal, reporting year 2024, as declared by operators. Only installations above the European reporting thresholds appear. Emissions reported are annual totals: they say nothing about when, or which way the wind was blowing.
- Roads — OpenStreetMap, © OpenStreetMap contributors (ODbL). Distance to a road class, not to traffic. A quiet primary road and a jammed one look identical here.
- Boundaries — CAOP (Carta Administrativa Oficial de Portugal, DGT), all 308 concelhos and the freguesias of the Lisbon and Porto metropolitan areas.
- Known projects — curated by hand, each with a citation. Not a forecast. Incomplete by construction.
- Address lookup — OpenStreetMap Nominatim. A geocoder returns the coordinate it thinks you meant. Check the place name we echo back before trusting the figures.
- Not used — CAMS reanalysis, which would give hourly modelled history, needs a Copernicus Atmosphere Data Store key that this build does not have. Madeira and the Azores fall outside the 1 km European map domain, so those 30 municipalities have measured station data but no modelled values and no rating.
Data built 2026-09-21. airhome is free and has no commercial relationship with anyone selling property.