San Antonio, United States

1.5 Million Citizens· Americas 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: San Antonio is 0% above its 30-day Ozone (O₃) baseline (144 vs 72.7). Unusual does not automatically mean unsafe; this is a statistical departure from recent local weather, not an emergency siren.

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: Good. 30-day baseline 8.2 µg/m³. Statistical anomaly: no. CAMS ozone on this page is 144 µg/m³ CAMS O₃ (mass concentration, not station AQI). · Click for dated trend

Copernicus CAMS 1-hour surface ozone as micrograms per cubic metre — not the 0–500 AQI or PSI ozone sub-index used by station dashboards. 30-day CAMS baseline 72.7 µg/m³. q=0.131. · Click for dated trend

High today: 32.2°C. 30-day baseline 28.8°C. · Click for dated trend

Dry spell does not automatically mean drought. Baseline 1 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

—%Saturation

Optimal range for local urban vegetation.

See This Change From Space

San Antonio 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

San Antonio Air Quality Index (AQI) and USA Air Pollution

07/30/2026, 01:08 PM, +0000 UTC

KSAT

KSAT Explains: San Antonio’s air quality issues may soon cost us all. But is it fixable?

11/27/2023, 08:00 AM, +0000 UTC

IQAir

Dallas Air Quality Index (AQI) and USA Air Pollution

06/22/2026, 08:54 PM, +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.