United States · The summary is refreshed every 15 minutes.
October 26
The air is clean now
Arvada
6°C
Rain
0AQI
1023hPa
Atmospheric
pressure
99%
Humidity
Arvada, October 25, 2026: daily mean PM2.5 8 µg/m³ (4 sensors), level “Low” — as in the Atmy Data Hub. Now (04:00 local time): 0.0 µg/m³. Open methodology and data in JSON: Methodology and data sources · JSON
Right now in Arvada, PM2.5 averages 0.0 µg/m³ — “good” on the US EPA scale (approximate, from hourly readings). Mean of 4 sensors from AirGradient, readings from 03:47–03:48 local time (09:47–09:48 UTC), summary prepared at 04:00 local time. Median: 0.0 µg/m³; range across sensors: 0.0–0.0 µg/m³.
In Arvada the air is good right now (approximate, US EPA scale). From 15:00 to 04:00 local time the city mean PM2.5 fell from 8.3 to 0.0 µg/m³. The highest hour was 19:00 with 11.3 µg/m³.
Precipitation (0.4 mm) is likely washing particles out of the air.
Weather now: rain, 6°C, wind 2 m/s, humidity 99%. No major change in the wind is expected in the coming hours. By 15:00 the temperature will be about 10°C.
Written automatically at 04:00 local time (10:00 UTC) from sensor measurements and the weather forecast. Values are approximate; hypotheses are marked.
2 m/s
Wind, N
1.1 mm
Precipitation today
8 µg/m³ Low
Daily mean PM2.5 on October 25, 2026 (00:00–24:00 UTC = 18:00–18:00 UTC-6): 8 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.
44/100Moderate · An estimate of weather conditions · not a PM2.5 forecast
10°/5°
Index by time of day
46/100Moderate
Night
Morning
Day
Evening17°/4°
Index by time of day
58/100Moderate
NightMorningDayEvening20°/10°
Index by time of day
48/100Moderate
NightMorningDayEvening17°/10°
Index by time of day
46/100Moderate
NightMorningDayEvening16°/10°
Index by time of day
41/100Moderate
NightMorningDayEvening18°/10°
Index by time of day
54/100Moderate
NightMorningDayEveningForecast of conditions that trap pollution near the surface
6°
Rain. Feels like 4°C
6°C92%
10°C77%6°C91%2m/sWind from the N
5m/sWind gusts
Wind force: 2
Gusts up to 5 m/s are expected.
United States
10°C5°C
17°C4°C
20°C10°C17°C10°C16°C10°C18°C10°C
16°C10°C19°C8°C13°C6°C17°C9°C
Highest current reading: 0.0 µg/m³ (Arvada, CO). Lowest: 0.0 µg/m³ (Arvada, CO). The list shows every sensor, highest first.
Source: atmy.ai monitoring network
Sensors in the summary by network: AirGradient — 4 sensors.
Atmy shows the networks’ readings after the Data Hub’s quality check: test devices and sensors that fail it are left out.
38
BellevueUnited States
4PortlandUnited States
4RenoUnited States
3Cities 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 Arvada: it is refreshed every 15 minutes and links to this page. Paste the code into your site.
United States · City ranking · All pilot cities
Daily mean PM2.5 on October 25, 2026 (00:00–24:00 UTC = 18:00–18:00 UTC-6): 8 µg/m³ from 4 sensors that passed the quality check — the same value as in the Atmy Data Hub.
Right now in Arvada, PM2.5 averages 0.0 µg/m³ — “good” on the US EPA scale (approximate, from hourly readings). Mean of 4 sensors from AirGradient, readings from 03:47–03:48 local time (09:47–09:48 UTC), summary prepared at 04:00 local time. Median: 0.0 µg/m³; range across sensors: 0.0–0.0 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: 0.0 µg/m³ (Arvada, CO). Lowest: 0.0 µg/m³ (Arvada, CO). 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
