# Air Quality

**US AQI: 70 — Moderate** (main pollutant: PM2.5)

_Measured by the closest reporting Texas Commission on Environmental Quality monitor for each pollutant (per AirNow) in the Houston-Galveston-Brazoria, TX area — the nearest official monitors to Crosby, which has none of its own (PM2.5 — Baytown; ozone — Baytown Garth; PM10 — Houston Deer Park). A real reading for the area, not a Crosby-pinpoint value. Observed 2026-07-21 01:00 CDT._

## By pollutant

- PM2.5: 70 (Moderate) — Baytown
- PM10: 45 (Good) — Houston Deer Park
- ozone: 12 (Good) — Baytown Garth

## Nearby ozone monitor

- Channelview C15 (ozone): 9 (Good) — updated Jul 21, 12:00 AM CDT
  Nearest dedicated ozone monitor (~8.5 mi); a cross-check so a locally elevated reading isn't hidden by the closest-per-pollutant headline.

## What this means

Acceptable for most. Unusually sensitive people may consider limiting prolonged outdoor exertion.

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Source: EPA/AirNow measured monitors (Houston metro reporting area). · [Pollen](https://crosbynews.com/pollen) · [crosbynews.com](https://crosbynews.com/)