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)
2025-06 day-by-day
Date Event AOD Dust PM2.5 Worst city Kind
06-01 Smoke (Mexico ag fires typical Apr-Jun) 0.47 4 21 Brownsville (17) actual
06-02 Smoke (Mexico ag fires typical Apr-Jun) 0.35 8 19 McAllen (34) actual
06-03 Smoke (Mexico ag fires typical Apr-Jun) 0.42 6 19 Midland (20) actual
06-04 Smoke (Mexico ag fires typical Apr-Jun) 0.46 3 19 Austin (4) actual
06-05 Smoke (Mexico ag fires typical Apr-Jun) 0.43 4 19 Corpus Christi (7) actual
06-06 Hazy 0.28 10 17 Corpus Christi (33) actual
06-07 Hazy 0.24 10 20 Houston (20) actual
06-08 Hazy 0.28 5 16 McAllen (8) actual
06-09 Smoke (Mexico ag fires typical Apr-Jun) 0.32 3 13 Corpus Christi (6) actual
06-10 Smoke (Mexico ag fires typical Apr-Jun) 0.33 2 13 Austin (4) actual
06-11 Smoke (Mexico ag fires typical Apr-Jun) 0.42 1 12 Tyler (2) actual
06-12 Smoke (Mexico ag fires typical Apr-Jun) 0.32 1 12 Corpus Christi (2) actual
06-13 Smoke (Mexico ag fires typical Apr-Jun) 0.38 6 19 Corpus Christi (17) actual
06-14 Smoke (Mexico ag fires typical Apr-Jun) 0.39 6 20 Tyler (10) actual
06-15 Smoke (Mexico ag fires typical Apr-Jun) 0.41 4 17 Corpus Christi (6) actual
06-16 Smoke (Mexico ag fires typical Apr-Jun) 0.33 6 16 Corpus Christi (20) actual
06-17 Hazy 0.22 8 14 Corpus Christi (21) actual
06-18 Hazy 0.26 10 17 Corpus Christi (18) actual
06-19 Saharan dust 0.29 20 17 Corpus Christi (26) actual
06-20 Hazy 0.27 14 14 Houston (26) actual
06-21 Hazy 0.22 20 15 Corpus Christi (39) actual
06-22 Clear 0.20 12 12 Corpus Christi (21) actual
06-23 Clear 0.19 7 12 San Antonio (16) actual
06-24 Hazy 0.22 3 11 Abilene (6) actual
06-25 Hazy 0.21 1 10 Midland (5) actual
06-26 Hazy 0.21 1 8 Lubbock (3) actual
06-27 Clear 0.17 1 8 Houston (2) actual
06-28 Clear 0.17 2 9 Brownsville (6) actual
06-29 Hazy 0.23 8 10 Corpus Christi (37) actual
06-30 Saharan dust 0.38 34 20 Corpus Christi (68) 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).