Dust / Smoke

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Honesty note: CAMS separates dust (desert surface class) from smoke/haze aloft (high AOD, low dust) reliably. Which desert or whose fire is seasonal inference only — Saharan-typical May–Sep on the coast; West Texas dust when only Lubbock/Midland/Abilene are dusty; Mexico ag-fire smoke typical Apr–Jun; Canadian wildfire smoke typical Jul–Sep. We never claim more than that.

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Today + 5-day forecast (Weighted ERCOT)
TODAY ·fcst
Clear
AOD 0.18 · dust 0
int 0/3
09-21 ·fcst
Clear
AOD 0.19 · dust 0
int 0/3
09-22 ·fcst
Clear
AOD 0.19 · dust 0
int 0/3
09-23 ·fcst
Hazy
AOD 0.24 · dust 0
int 1/3
09-24 ·fcst
Hazy
AOD 0.25 · dust 0
int 1/3
09-25 ·fcst
Clear
AOD — · dust —
int 0/3
Worst dust city today
Lubbock
Dust 2 µg/m³ · AOD 0.15 · Clear
2026-09-20 (forecast)
Worst US AQI city today
Houston
US AQI 72 · dust 0
2026-09-20 (forecast)
2025-08 day-by-day
Date Event AOD Dust PM2.5 Worst city Kind
08-01 Smoke (Canadian wildfire typical Jul-Sep) 0.35 3 18 Austin (5) actual
08-02 Smoke (Canadian wildfire typical Jul-Sep) 0.38 2 19 McAllen (4) actual
08-03 Smoke (Canadian wildfire typical Jul-Sep) 0.35 2 17 Lubbock (4) actual
08-04 Smoke (Canadian wildfire typical Jul-Sep) 0.34 2 20 DFW (3) actual
08-05 Hazy 0.28 2 19 San Antonio (4) actual
08-06 Hazy 0.24 1 14 Abilene (2) actual
08-07 Smoke (Canadian wildfire typical Jul-Sep) 0.36 5 18 McAllen (24) actual
08-08 Hazy 0.29 7 17 McAllen (28) actual
08-09 Hazy 0.25 6 12 McAllen (32) actual
08-10 Hazy 0.27 2 12 Brownsville (7) actual
08-11 Smoke (Canadian wildfire typical Jul-Sep) 0.31 2 13 Brownsville (4) actual
08-12 Smoke (Canadian wildfire typical Jul-Sep) 0.39 2 16 Abilene (4) actual
08-13 Smoke (Canadian wildfire typical Jul-Sep) 0.32 3 18 Brownsville (19) actual
08-14 Hazy 0.24 7 16 Corpus Christi (18) actual
08-15 Hazy 0.20 3 11 Brownsville (8) actual
08-16 Hazy 0.27 13 15 Brownsville (59) actual
08-17 Hazy 0.27 13 16 DFW (24) actual
08-18 Hazy 0.29 5 14 DFW (10) actual
08-19 Smoke (Canadian wildfire typical Jul-Sep) 0.41 3 16 Wichita Falls (9) actual
08-20 Smoke (Canadian wildfire typical Jul-Sep) 0.41 2 21 DFW (4) actual
08-21 Smoke (Canadian wildfire typical Jul-Sep) 0.38 2 20 Abilene (4) actual
08-22 Smoke (Canadian wildfire typical Jul-Sep) 0.39 2 19 Midland (4) actual
08-23 Smoke (Canadian wildfire typical Jul-Sep) 0.33 1 18 Abilene (3) actual
08-24 Smoke (Canadian wildfire typical Jul-Sep) 0.32 2 18 DFW (4) actual
08-25 Smoke (Canadian wildfire typical Jul-Sep) 0.32 2 19 Houston (3) actual
08-26 Smoke (Canadian wildfire typical Jul-Sep) 0.44 3 21 Corpus Christi (13) actual
08-27 Smoke (Canadian wildfire typical Jul-Sep) 0.45 5 20 Corpus Christi (12) actual
08-28 Hazy 0.28 8 16 McAllen (16) actual
08-29 Hazy 0.25 4 13 McAllen (8) actual
08-30 Smoke (Canadian wildfire typical Jul-Sep) 0.31 1 10 Corpus Christi (4) actual
08-31 Smoke (Canadian wildfire typical Jul-Sep) 0.31 2 13 Brownsville (10) actual
All-time top dust days
Date City Dust AOD Class
2024-07-13 Brownsville 118 0.41 Saharan dust
2024-03-24 Midland 110 0.23 Desert dust
2026-09-15 Corpus Christi 110 0.31 Saharan dust
2024-07-13 McAllen 105 0.48 Saharan dust
2026-09-15 Brownsville 96 0.35 Saharan dust
2024-02-03 Midland 95 0.20 Desert dust
2024-07-30 Corpus Christi 95 0.40 Saharan dust
2024-07-31 Corpus Christi 94 0.40 Saharan dust
2026-06-29 Tyler 93 0.32 Saharan dust
2024-07-01 Corpus Christi 92 0.33 Saharan dust
All-time top smoke days (dust < 10)
Date City AOD Dust Class
2024-06-02 Tyler 1.86 3 Smoke (Mexico ag fires typical Apr-Jun)
2024-05-16 Houston 1.70 2 Smoke (Mexico ag fires typical Apr-Jun)
2024-05-28 DFW 1.45 3 Smoke (Mexico ag fires typical Apr-Jun)
2024-05-02 Tyler 1.39 1 Smoke (Mexico ag fires typical Apr-Jun)
2024-05-22 Tyler 1.32 1 Smoke (Mexico ag fires typical Apr-Jun)
2025-04-19 DFW 1.23 1 Smoke (Mexico ag fires typical Apr-Jun)
2025-04-19 Wichita Falls 1.23 1 Smoke (Mexico ag fires typical Apr-Jun)
2024-05-29 Abilene 1.22 1 Smoke (Mexico ag fires typical Apr-Jun)
2024-05-13 Houston 1.21 1 Smoke (Mexico ag fires typical Apr-Jun)
2024-05-30 Abilene 1.21 2 Smoke (Mexico ag fires typical Apr-Jun)

Plan 3 Part D2 · Classifier heuristics in config (AIR_DUST_UG_MIN etc.) · Data from CityAir / DailyAir (CAMS via Open-Meteo).