Ranchi, India

1.1 Million Citizens· Asia Metropolitan Baseline

Statistically typical versus the 30-day baseline. Air still exceeds the WHO health guideline — unusual and unsafe are different questions.

Gemini AI Synthesis & Plain-Language Summary

Gemini 3.5 Flash-Lite · Sensor & meteorological cross-match

In plain English: Ranchi Fine Particles (PM2.5) is 74 versus a 30-day baseline of 27 (0%). PM2.5 is 74 µg/m³, unhealthy on the EPA scale and above the WHO 24-hour guideline of 15 µg/m³. Limit prolonged outdoor exertion; a baseline-normal day can still be unhealthy.

Gemini may only interpret numbers already on this page. Chart annotations below are computed from the dated series (onset, peak, duration, latest vs baseline). Hypotheses are labeled and are not verified causes.

Conversational Telemetry Questions (8 Indicators)

Open-Meteo · CAMS · NASA FIRMS · click a chart for 30/60/90-day investigation

WHO 24h guideline: 15 µg/m³. EPA band: Unhealthy. 30-day baseline 27 µg/m³. Statistical anomaly: no. CAMS ozone on this page is 67 µg/m³ CAMS O₃ (mass concentration, not station AQI). · Click for dated trend

Baseline 27 µg/m³ · q=0.0708 · Click for dated trend

High today: 26.1°C. 30-day baseline 24.1°C. · Click for dated trend

Dry spell does not automatically mean drought. Baseline 5.9 mm. · Click for dated trend

Wind helps disperse ground-level pollutants. Click for the humidity trend versus other atmospheric measurements. · Click for dated trend

Sun protection recommended during midday hours.

Standard clear atmospheric line of sight.

Is soil moisture balanced?Root Zone

31%Saturation

Optimal range for local urban vegetation.

See This Change From Space

Ranchi is holding near its own 30-day baseline (no magnitude-gate or Isolation Forest flag). The satellite investigation engine stays idle so GIBS tiles are not fetched for unflagged cities. Unusual ≠ unsafe.

In the local news · Ground-Truthing via SerpApi

Real-time web corroboration

IQAir

India Air Quality Index (AQI) and Air Pollution information | IQAir USA

06/22/2026, 08:53 PM, +0000 UTC

IQAir

Air quality in Ranchi

06/23/2026, 08:42 PM, +0000 UTC

The Times of India

Meet Archishman Dey, the Ohio eighth-grader who tested an air fryer, candle, humidifier, gas and incense; incense produced the most fine-particle pollution

08/20/2026, 07:00 AM, +0000 UTC

Modeled weather: Open-Meteo (ECMWF IFS / GFS blend). Modeled air: Open-Meteo Air Quality (Copernicus CAMS). Observed fire: NASA FIRMS VIIRS 375 m. Observation 2026-10-08T00:00:00Z. Pillar Steady Baseline.