Spain · The summary is refreshed every 15 minutes.
November 11
The air is clean now
Measured 21:00–22:56
Castelló de la Plana
18°C
Rain
1000
hPaAtmospheric
pressure
81%
Humidity
Castelló de la Plana, November 10, 2026: daily mean PM2.5 6 µg/m³ (15 sensors), level “Low” — as in the Atmy Data Hub. Now (23:00 local time): 4.2 µg/m³. Open methodology and data in JSON: Methodology and data sources · JSON
Right now in Castelló de la Plana, PM2.5 averages 4.2 µg/m³ — “good” on the US EPA scale (approximate, from hourly readings). Mean of 6 sensors from Government stations, Sensor.Community, readings from 21:00–22:56 local time (20:00–21:56 UTC), summary prepared at 23:00 local time. Median: 4.0 µg/m³; range across sensors: 0.6–8.5 µg/m³.
In Castelló de la Plana the air is good 🟢 AQI 23. Higher than three hours ago. 🌧️ +18 °C · Precipitation 0.1 mm · Wind 2 m/s
In Castelló de la Plana the air is good right now (approximate, US EPA scale). From 10:00 to 23:00 local time the city mean PM2.5 stayed roughly level: from 4.7 to 4.2 µg/m³. The highest hour was 15:00 with 6.2 µg/m³.
The weather data do not point to a clear reason for this level.
Weather now: rain, 18°C, wind 2 m/s, humidity 81%. Precipitation is expected around 23:00; it may wash particles out.
Written automatically at 23:00 local time (22:00 UTC) from sensor measurements and the weather forecast. Values are approximate; hypotheses are marked.
2 m/s
Wind, N
0.3 mm
Precipitation today
6 µg/m³ Low
Daily mean PM2.5 on November 10, 2026 (00:00–24:00 UTC = 01:00–01:00 UTC+1): 6 µg/m³ from 15 sensors that passed the quality check — the same value as in the Atmy Data Hub.
23/100Low · An estimate of weather conditions · not a PM2.5 forecast
23°/17°
Index by time of day
48/100Moderate
Night
Morning
Day
Evening25°/15°
Index by time of day
56/100Moderate
NightMorningDayEvening25°/14°
Index by time of day
55/100Moderate
NightMorningDayEvening21°/13°
Index by time of day
50/100Moderate
NightMorningDayEvening24°/13°
Index by time of day
53/100Moderate
NightMorningDayEvening25°/14°
Index by time of day
53/100Moderate
NightMorningDayEveningForecast of conditions that trap pollution near the surface
18°
Rain. Feels like 19°C
17°C81%23°C62%19°C83%2m/sWind from the N
3m/sWind gusts
Wind force: 2
Gusts up to 4 m/s are expected.
Spain
23°C17°C25°C15°C
25°C14°C21°C13°C24°C13°C25°C14°C24°C16°C23°C15°C24°C15°C18°C10°C
Highest current reading: 8.5 µg/m³ (SC #53279). Lowest: 0.6 µg/m³ (SC #91020). The list shows every sensor, highest first.
Source: atmy.ai monitoring network
Sensors in the summary by network: Government stations — 4 sensors, Sensor.Community — 2 sensors.
Atmy shows the networks’ readings after the Data Hub’s quality check: test devices and sensors that fail it are left out.
143
MataróSpain
21Vitoria-GasteizSpain
18A CoruñaSpain
15Cities with the most sensors
All sensors on the map, by city as the map assigns them; the city’s values count only the sensors that pass the Data Hub’s quality check.
Daily mean PM2.5 of the city sensors, µg/m³
Click a day to see its date and value.
An Atmy card with the air quality in Castelló de la Plana now: it is refreshed every 15 minutes and links to this page. Paste the code into your site.
Spain · City ranking · All pilot cities
Daily mean PM2.5 on November 10, 2026 (00:00–24:00 UTC = 01:00–01:00 UTC+1): 6 µg/m³ from 15 sensors that passed the quality check — the same value as in the Atmy Data Hub. No. 5 of 12 cities in Spain and No. 607 of 676 worldwide, from the most polluted.
Right now in Castelló de la Plana, PM2.5 averages 4.2 µg/m³ — “good” on the US EPA scale (approximate, from hourly readings). Mean of 6 sensors from Government stations, Sensor.Community, readings from 21:00–22:56 local time (20:00–21:56 UTC), summary prepared at 23:00 local time. Median: 4.0 µg/m³; range across sensors: 0.6–8.5 µg/m³.
The current level is “good” (US EPA scale, approximate). Air quality is satisfactory; no restrictions are recommended. This is the standard guidance of the scale, not medical advice.
Highest current reading: 8.5 µg/m³ (SC #53279). Lowest: 0.6 µg/m³ (SC #91020). The list shows every sensor, highest first.
From Atmy sensors and connected public networks (citizen, experimental and government monitors), aggregated by Atmy. Values are approximate; see the methodology.
The summary is rebuilt every 15 minutes from the latest reading of each sensor, each no older than one hour.
The daily value is the Data Hub’s: the mean of the city’s sensors that passed the nightly quality check, each with at least 12 valid hours, and only with sensors at four places 500 m apart; days are UTC.
“Now” uses the same sensors and rule: the mean of their latest readings, each at most 60 minutes old, shown only with sensors at four places 500 m apart reporting.
Source: public Atmy monitoring data. Methodology and data sources · Data terms
