France · The summary is refreshed every 15 minutes.
No current value: fewer than four sensors at different places are reporting now.
Tours, November 10, 2026: daily mean PM2.5 10 µg/m³ (7 sensors), level “Moderate” — as in the Atmy Data Hub. Open methodology and data in JSON: Methodology and data sources · JSON
There are not enough fresh measurements for Tours right now. From 10:00 to 21:00 local time the city mean PM2.5 stayed roughly level: from 6.8 to 6.5 µg/m³. The highest hour was 18:00 with 12.3 µg/m³.
The weather data do not point to a clear reason for this level.
Weather now: fog, 13°C, wind 1 m/s, humidity 100%. By 08:00 the wind is expected to pick up to 4 m/s, which may clear the air.
Written automatically at 22:09 local time (21:09 UTC) from sensor measurements and the weather forecast. Values are approximate; hypotheses are marked.
1 m/s
Wind, NE
0 mm
Precipitation today
10 µg/m³ Moderate
Daily mean PM2.5 on November 10, 2026 (00:00–24:00 UTC = 01:00–01:00 UTC+1): 10 µg/m³ from 7 sensors that passed the quality check — the same value as in the Atmy Data Hub.
Monthly means of quality-checked sensors, as in the Data Hub trend; the current month is still incomplete, “-” means no data.
23/100Low · An estimate of weather conditions · not a PM2.5 forecast
17°/11°
Index by time of day
56/100Moderate
Night
Morning
Day
Evening13°/8°
Index by time of day
33/100Low
NightMorningDayEvening11°/4°
Index by time of day
52/100Moderate
NightMorningDayEvening10°/2°
Index by time of day
53/100Moderate
NightMorningDayEvening15°/5°
Index by time of day
50/100Moderate
NightMorningDayEvening14°/8°
Index by time of day
47/100Moderate
NightMorningDayEveningForecast of conditions that trap pollution near the surface
13°
Fog. Feels like 13°C
11°C100%17°C84%
13°C100%1m/sWind from the NE
2m/sWind gusts
Wind force: 1
Gusts up to 6 m/s are expected.
France
17°C11°C13°C8°C11°C4°C10°C2°C
15°C5°C14°C8°C17°C11°C
14°C10°C13°C9°C11°C5°C207
RennesFrance
20ToulouseFrance
18VilleurbanneFrance
16Cities 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.
France · City ranking · All pilot cities
Daily mean PM2.5 on November 10, 2026 (00:00–24:00 UTC = 01:00–01:00 UTC+1): 10 µg/m³ from 7 sensors that passed the quality check — the same value as in the Atmy Data Hub. No. 18 of 32 cities in France and No. 541 of 676 worldwide, from the most polluted.
Fresh data for Tours are insufficient (last update: 21:45 local time, 20:45 UTC). Open the map for the latest readings of individual sensors.
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
