Today | Weather | Monday, September 21, 2026
Active Weather Warnings

Weather in Denton, Texas

10:44 PM
Now
Stormy Weather
81° F
Feels Like 84°
Precipitation 75 %
Wind 6 mph
Humidity 75 %
Today
Stormy Weather
Day 99°
Night 72°
Precipitation 100 %
Wind 8 mph

Denton Weather Forecast Updated

29 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (September 21, 2025)
Stormy Weather

Day

91°

Night

73°

Wind

12 mph

Precipitation

86 %

Air Quality in Denton

NOW
37 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.5 µg/m³
PM10 4.79 µg/m³
O3 0.040 ppm
NO2 2 ppb
SO2 0.2 ppb
CO 0.11 ppm
NH3 0.75 µg/m³
NO 0 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.53.5 µg/m³
PM104.79 µg/m³
O379.31 µg/m³
NO23.71 µg/m³
SO20.51 µg/m³
CO130.65 µg/m³
NH30.75 µg/m³
NO0 µg/m³

Weather Alerts and Warnings for Denton

Air Quality Alert

Air Quality Alert issued September 21 at 3:02PM CDT by NWS Fort Worth TX
Sep 21, 3:02 PM Sep 22, 6:15 PM
AQAFWD

The Texas Commission on Environmental Quality (TCEQ) has issued
an Ozone Action Day for the Dallas-Fort Worth area for Tuesday,
September 22, 2026.

Atmospheric conditions are expected to be favorable for producing
high levels of ozone air pollution in the Dallas-Fort Worth area
on Tuesday. You can help prevent ozone pollution by sharing a
ride, walking, riding a bicycle, taking your lunch to work,
avoiding drive-through lanes, conserving energy, and keeping your
vehicle properly tuned.

For more information on ozone:

Ozone: The Facts (www.tceq.texas.gov/goto/ozonefacts)

Air North Texas: (www.airnorthtexas.org)

EPA Air Now
(www.airnow.gov/index.cfm?action.local_state&STATEID=45&TAB=0)

Take care of Texas (www.takecareoftexas.org)

North Central Texas Council of Governments Air Quality
(www.nctcog.org/trans/air/index.asp)
Updated: Sep 21, 10:15 PM Source: NWS Alert