Italy · The summary is refreshed every 15 minutes.
October 28
The air is unhealthy for sensitive groups
Modena
8°C
Cloudy
127AQI
1022hPa
Atmospheric
pressure
90%
Humidity
Modena, October 27, 2026: daily mean PM2.5 37 µg/m³ (4 sensors), level “Elevated” — as in the Atmy Data Hub. Now (06:00 local time): 45.9 µg/m³. Open methodology and data in JSON: Methodology and data sources · JSON
Right now in Modena, PM2.5 averages 45.9 µg/m³ — “unhealthy for sensitive groups” on the US EPA scale (approximate, from hourly readings). Mean of 4 sensors from Sensor.Community, AirGradient, readings from 05:47–05:57 local time (04:47–04:57 UTC), summary prepared at 06:00 local time. Median: 45.6 µg/m³; range across sensors: 18.1–74.1 µg/m³.
In Modena the air is unhealthy for sensitive groups right now (approximate, US EPA scale). From 17:00 to 06:00 local time the city mean PM2.5 rose from 24.8 to 45.9 µg/m³. The highest hour was 04:00 with 55.3 µg/m³.
Light wind (1 m/s) in the evening or at night, as the air cools, possibly traps particles near the ground (a temperature inversion). High humidity (90%) possibly makes optical sensors read somewhat higher.
Weather now: cloudy, 8°C, wind 1 m/s, humidity 90%. No major change in the wind is expected in the coming hours. By 17:00 the temperature will be about 16°C.
Written automatically at 06:00 local time (05:00 UTC) from sensor measurements and the weather forecast. Values are approximate; hypotheses are marked.
1 m/s
Wind, WSW
0 mm
Precipitation today
37 µg/m³ Elevated
Daily mean PM2.5 on October 27, 2026 (00:00–24:00 UTC = 01:00–01:00 UTC+1): 37 µg/m³ from 4 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.
40/100Moderate · An estimate of weather conditions · not a PM2.5 forecast
17°/8°
Index by time of day
53/100Moderate
Night
Morning
Day
Evening19°/9°
Index by time of day
59/100Moderate
NightMorningDayEvening18°/8°
Index by time of day
57/100Moderate
NightMorningDayEvening17°/8°
Index by time of day
56/100Moderate
NightMorningDayEvening15°/7°
Index by time of day
55/100Moderate
NightMorningDayEvening13°/5°
Index by time of day
53/100Moderate
NightMorningDayEveningForecast of conditions that trap pollution near the surface
8°
Cloudy. Feels like 7°C
11°C82%17°C60%12°C86%1m/sWind from the WSW
3m/sWind gusts
Wind force: 1
Light wind is expected over the next few hours.
Italy
17°C8°C19°C9°C
18°C8°C17°C8°C15°C7°C
13°C5°C12°C6°C15°C4°C14°C4°C13°C5°C
Highest current reading: 74.1 µg/m³ (Condominio Bracco). Lowest: 18.1 µg/m³ (SC #42124). The list shows every sensor, highest first.
Source: atmy.ai monitoring network
Sensors in the summary by network: Sensor.Community — 3 sensors, AirGradient — 1 sensor.
Atmy shows the networks’ readings after the Data Hub’s quality check: test devices and sensors that fail it are left out.
199
VicenzaItaly
15BolognaItaly
13Pordenone / PordenonItaly
12Cities 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.
A card with the current PM2.5 in Modena: it is refreshed every 15 minutes and links to this page. Paste the code into your site.
Italy · City ranking · All pilot cities
Daily mean PM2.5 on October 27, 2026 (00:00–24:00 UTC = 01:00–01:00 UTC+1): 37 µg/m³ from 4 sensors that passed the quality check — the same value as in the Atmy Data Hub. No. 3 of 20 cities in Italy and No. 13 of 282 worldwide, from the most polluted.
Right now in Modena, PM2.5 averages 45.9 µg/m³ — “unhealthy for sensitive groups” on the US EPA scale (approximate, from hourly readings). Mean of 4 sensors from Sensor.Community, AirGradient, readings from 05:47–05:57 local time (04:47–04:57 UTC), summary prepared at 06:00 local time. Median: 45.6 µg/m³; range across sensors: 18.1–74.1 µg/m³.
The current level is “unhealthy for sensitive groups” (US EPA scale, approximate). Children, older adults and people with heart or lung disease should reduce prolonged or heavy exertion outdoors. This is the standard guidance of the scale, not medical advice.
Highest current reading: 74.1 µg/m³ (Condominio Bracco). Lowest: 18.1 µg/m³ (SC #42124). 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.
Over the last 255 days with data, the mean daily PM2.5 in Modena was 16.0 µg/m³ — 3.2 times the WHO annual guideline (5 µg/m³). Over the last 30 days: — µg/m³. From Atmy's archive of daily city means.
In Atmy's daily archive, the cleanest month of the last year was May 2026: 6.2 µg/m³ on average.
The most polluted month of the last year was January 2026: 34.2 µg/m³ on average.
From November to March the mean daily PM2.5 was 28.0 µg/m³, from June to August 7.9 µg/m³ (last 365 days).
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
