PM10 · main
61
Moderate
Clinton
Air Quality
Measured air quality for the Houston metro area, which includes Crosby. The U.S. Air Quality Index (AQI) runs 0–500; the number below is the highest of the reported pollutants, which sets the overall level.
61
Moderate
Main pollutant: PM10 · Clinton monitor · 2026-09-03 15:00 CDT
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 — Clinton). A real reading for the area, not a Crosby-pinpoint value.
PM2.5
58
Moderate
Baytown
ozone
26
Good
Baytown Garth
Nearby ozone monitori
Channelview C15 is the nearest dedicated ozone monitor to Crosby (about 8.5 mi). It measures ozone only — the headline number above already uses the closest reporting monitor for each pollutant. It's shown here as a cross-check, so a locally elevated ozone reading near the ship channel can't slip past. Hourly, measured by TCEQ via EPA/AirNow.
i
Channelview C15 is the nearest dedicated ozone monitor to Crosby (about 8.5 mi). It measures ozone only — the headline number above already uses the closest reporting monitor for each pollutant. It's shown here as a cross-check, so a locally elevated ozone reading near the ship channel can't slip past. Hourly, measured by TCEQ via EPA/AirNow.
Channelview C15 · ozone
26
Good
Updated Sep 3, 2:00 PM CDT
What this means
Acceptable for most. Unusually sensitive people may consider limiting prolonged outdoor exertion.
How to read the AQI
| AQI | Level | What to do |
|---|---|---|
| 0–50 | Good | Air is clean — enjoy outdoor activity. |
| 51–100 | Moderate | Unusually sensitive people: ease up on hard outdoor exertion. |
| 101–150 | Sensitive groups | Heart/lung conditions, kids, older adults: limit prolonged exertion. |
| 151–200 | Unhealthy | Everyone limits prolonged exertion; sensitive groups avoid it. |
| 201–300 | Very Unhealthy | Avoid outdoor exertion. |
| 301+ | Hazardous | Stay indoors; avoid all outdoor exertion. |
Air quality on the Gulf Coast
Ground-level ozone is the Houston area's signature summer pollutant — it forms on hot, sunny, stagnant afternoons when sunlight cooks emissions from traffic and the ship-channel industry, so ozone AQI usually peaks mid-afternoon and eases overnight. Fine particles (PM2.5) matter year-round and spike with wildfire smoke, Saharan dust in summer, and still winter mornings. When TCEQ calls an Ozone Action Day, sensitive groups should plan outdoor activity for the morning.
- AirNow (EPA) — the EPA's official measured air-quality data — the source behind this page
- TCEQ air monitoring — the Texas agency that runs the monitors
- Pollen & mold — the daily measured pollen and mold count for the Crosby area
- Crosby forecast — how heat and stagnant air drive ozone days