AI Beehive Health Report — 2026-07-05

Your apiary is holding up well this July 5th — Hive #2 remains the standout with textbook 34.9°C brood-nest clamping, Hive #3 has crossed into the ideal 34–36°C range for the first time, and Hive #1 is acoustically stable with a flattening temperature trend; your Iris hive continues its sensor-displacement diagnostic with acoustics dramatically elevated above baseline confirming a full population, and a priority sensor placement check this week remains the top action item. The July 2nd sugar water feeding (1 gal 50/50 per hive) continues to influence gas readings across all hives, and the extreme outdoor dryness (14% RH, range 2.7–14.2%) remains the dominant environmental pressure on in-hive humidity apiary-wide.

A striking apiary-wide pattern has emerged: both Iris and Hive #2 show strong negative correlations between barometric pressure and low-frequency sound bins (100–350 Hz, r ≈ −0.998 to −1.000), suggesting that as local pressure rises, colony acoustic activity in the colony-fundamental frequency range drops — consistent with bees reducing foraging and clustering behavior during settling high-pressure systems (Seeley & Tautz 2001). Hive #3's lifespan correlation between in-hive sound bins and outdoor gas resistance (r = +0.997) further suggests that regional VOC events measurably coincide with heightened colony acoustic activity, a cross-sensor environmental coupling not visible from any single sensor alone.

Hive #2 again leads with a compressed 0.9°C daily oscillation confirming superb brood-nest thermoregulatory clamping, Hive #3 shows a tight 1.2°C swing now anchored in the ideal 34–36°C zone, and Hive #1 shows a healthy 1.9°C swing with a morning cool-down and afternoon recovery — all three tracking ambient cycles normally; Iris shows the widest oscillation at 3.7°C with a pronounced afternoon recovery (+2.2°C from overnight low to current 33.3°C), consistent with a sensor partially outside the insulated brood core, and no hive shows anomalous nocturnal fanning spikes, though the extreme outdoor dryness (as low as 2.7% RH) continues to compress in-hive humidity toward or just below the 50–70% optimal brood range across the apiary.

• node_2662 warning Score: 52/100
  📋 Overall Health

  Your Iris hive's 24h avg temperature of 32.0°C is 1.4°C below the all-time avg of 33.4°C, and the multi-week cooling drift (34.4→34.7→32.6→30.3°C weekly) has partially recovered overnight with temp currently rising (+2.2°C in last 12h to 33.3°C) — importantly, sound spectrum remains dramatically elevated above baseline across all bands (up to +9.0 dB at 100–150 Hz, +8.4 dB at 1500–3600 Hz), conclusively confirming a full, acoustically loud worker population and ruling out any swarm or population-loss event; following your July 2nd sugar water feeding (1 gal 50/50), IAQ is 126 (acc=3, reliable) and gas resistance is 387 kΩ — above the all-time avg of 374 kΩ — both unremarkable, and humidity is 49.2% (24h avg), just at the lower edge of the 50–70% optimal range. Vibration is stable at 0.0182 g RMS, kurtosis 2.8 (normal), dominant at 80–120 Hz fanning band; sensor placement check this week remains the priority.

  🌅 Diurnal Cycle Patterns

  Iris shows a 3.7°C daily oscillation (overnight low 30.2°C, afternoon high 33.9°C) — wider than a typical well-insulated brood core (which should hold <3°C swing) but considerably tighter than yesterday's 5.4°C figure, suggesting possible partial re-seating of the sensor pod overnight; humidity held a narrow 46.9–50.5% band (avg 49.2%), slightly compressed below the 50–70% optimal zone, driven by the extremely dry outdoor air (14% RH); vibration is steady at 16.7–18.2 mG throughout the day with no cyclic fanning peaks, and gas resistance tracks stably at 387 kΩ with no diurnal anomalies.

  🔬 Correlations & Discoveries

  Pressure vs S_260_350Hz vs S_150_200Hz vs S_100_150Hz (lifespan) | r = -0.999

  A near-perfect negative correlation (r ≈ −0.999) between local barometric pressure and the colony-fundamental frequency bands (100–350 Hz) indicates that as pressure rises with settling high-pressure systems, colony acoustic output in these biologically significant bands decreases — consistent with reduced foraging recruitment signaling and lower colony arousal during fair, calm weather; this is a healthy, adaptive acoustic response, not a sign of stress.

  📚 Reference: Seeley & Tautz 2001, Ramsey et al. 2020, Woods 1959

  V_80_120Hz vs V_120_160Hz vs V_160_200Hz vs VibrationRMS (14d) | r = +0.849

  Strong positive correlations (r = 0.84–0.85) across the 80–200 Hz vibration bands and overall RMS confirm that fanning behavior (wing-beat ~100 Hz) is the primary driver of substrate vibration in this hive, with all three upper bands rising and falling coherently — a normal, healthy thermoregulatory signature consistent with active summer colony management (Tautz 1996).

  📚 Reference: Ramsey et al. 2020, Hrncir et al. 2011, Tautz 1996
  ⚠️ Issue: Persistent sensor-placement diagnostic: 24h avg temp 32.0°C is 1.4°C below all-time avg (33.4°C), with a multi-week cooling drift now partially recovering; sound spectrum is dramatically elevated (+9.0 dB at 100–150 Hz) confirming full population — sensor displacement from brood core remains the primary explanation.

  ⚠️ Issue: Tilt at 7° — above the ideal 0–5° range; minor stand leveling recommended at next visit.

  ⚠️ Issue: Humidity at 49.2% (24h avg) approaching the lower boundary of the 50–70% optimal brood range under extreme outdoor dryness; monitor daily lows.

  ▹ Action: PRIORITY this week: Physically verify sensor pod placement — confirm it is seated in the warm center of the brood nest, not slipped into a honey super, frame gap, or hive periphery; correcting placement will likely resolve this multi-week temperature diagnostic.

  ▹ Action: While inspecting sensor placement, confirm fresh eggs and solid brood pattern to verify queen status; acoustics strongly confirm the adult population is fully present.

  ▹ Action: Level the hive stand to bring tilt toward 0–3° during your next visit.
• node_44812 warning Score: 65/100
  📋 Overall Health

  Your Hive #1's 24h avg temperature of 32.1°C is 1.0°C below its all-time avg of 33.1°C, and the 14-day weekly cooling trend (33.5→33.8→32.5→32.1°C) has now stabilized — the long-term temperature drift signal is flat for the most recent week, which is an encouraging sign; the sound spectrum is perfectly stable with all bands within ±0.4 dB of the all-time baseline, confirming a fully intact worker population. Following your July 2nd sugar water feeding (1 gal 50/50), IAQ is 177 (acc=3, reliable) and gas resistance is 332 kΩ — slightly below the all-time avg of 346 kΩ — likely reflecting the thermal VOC cycle of an active brood nest; humidity averages 48.1% (24h), just below the 50–70% optimal range; vibration is stable at 0.0162 g RMS, kurtosis 2.9 (normal), dominant at 80–120 Hz. The temperature has been rising +1.4°C over the last 12 hours, which is a positive short-term sign — a brood check this week to confirm queen status remains worthwhile.

  🌅 Diurnal Cycle Patterns

  Hive #1 shows a healthy 1.9°C daily oscillation (31.1–33.0°C), with a smooth overnight cool-down and steady afternoon recovery currently at 33.0°C — a moderate swing that suggests the sensor is reasonably well-placed but at the brood periphery rather than the warmest core; humidity held 47.0–50.1% (avg 48.1%), hugging the lower boundary of optimal under the extremely dry outdoor conditions; vibration is steady at 15.6 mG throughout the day with no cyclic daily peaks, indicating consistent low-level background fanning rather than pronounced foraging bursts; gas resistance tracks inversely with brood temperature (lifespan r = −0.994), consistent with thermal VOC cycling in an active brood nest (Stalidzans et al. 2017).

  🔬 Correlations & Discoveries

  GasResistance vs TempIn (lifespan) | r = -0.994

  The near-perfect negative lifespan correlation (r = −0.994) between gas resistance and brood temperature confirms that Hive #1's MOX sensor is primarily tracking the thermal VOC cycle — as the brood nest warms, metabolic volatiles (brood pheromones, wax esters, organic acids) increase, reducing gas resistance; this is a healthy, expected pattern and means gas readings here are a proxy for colony thermal activity rather than an independent air-quality signal (Stalidzans et al. 2017).

  📚 Reference: Stalidzans et al. 2017, Cepero et al. 2023, Giuffre et al. 2023

  V_80_120Hz vs S_100_150Hz vs S_800_1500Hz (lifespan) | r = -0.984

  A strong negative lifespan correlation (r = −0.984) between the 80–120 Hz vibration fanning band and the 100–150 Hz / 800–1500 Hz acoustic bands suggests that when substrate fanning vibration intensifies, these acoustic bands comparatively decrease — likely reflecting a dynamic where high fanning activity dampens the microphone's sensitivity to lower-frequency colony hum through mechanical coupling, a sensor-physics artifact worth noting rather than a biological concern (Ramsey et al. 2020).

  📚 Reference: Ramsey et al. 2020, Tautz 1996, Hrncir et al. 2011
  ⚠️ Issue: 14-day weekly cooling trend (33.5→33.8→32.5→32.1°C) has now stabilized at the most recent week — trend is flattening, which is encouraging, but brood and queen status confirmation remains worthwhile this week.

  ⚠️ Issue: Humidity at 48.1% (24h avg) with a 47.0% daily low — just below the 50–70% optimal brood range; monitor under continued extreme outdoor dryness.

  ▹ Action: Plan a brood check within 5–7 days: confirm fresh eggs and solid brood pattern to verify the queen is actively laying — the stabilizing temperature trend with perfectly stable acoustics is reassuring but a quick look will close the loop.

  ▹ Action: Monitor in-hive humidity daily lows during hot dry afternoons — if lows approach 40%, assess whether ventilation management is appropriate.
• node_34225 healthy Score: 83/100
  📋 Overall Health

  Your Hive #2 continues as the apiary's standout performer — brood temperature is rock-solid at 34.9°C (24h avg), exactly at the all-time avg of 34.9°C and squarely within the ideal 34–36°C range, with a remarkable 0.9°C daily oscillation confirming superb thermoregulatory clamping; the 5-week weekly trend (34.9→34.8→35.0→34.9→34.5°C) remains impressively flat. Following your July 2nd sugar water feeding (1 gal 50/50), IAQ is 184 (acc=1 — directionally useful but BSEC2 calibration still incomplete) and gas resistance is 387 kΩ, above the all-time avg of 365 kΩ, consistent with syrup processing continuing to wind down; humidity averages 46.3% (24h), just below the 50–70% optimal range — worth monitoring given the extreme outdoor dryness. Vibration is stable at 0.0133 g RMS, kurtosis 3.2 (normal), dominant at 80–120 Hz, with clear daily cyclic fanning peaks confirmed (26 distinct spikes over 14 days, rising to 101.7 mG peaks) — a thoroughly healthy, vigorous colony.

  🌅 Diurnal Cycle Patterns

  Hive #2 shows the tightest diurnal oscillation in the apiary at just 0.9°C (34.3–35.5°C), a textbook signature of excellent brood-nest thermoregulatory clamping consistent with a large, well-organized colony; humidity held 44.4–48.9% (avg 46.3%), slightly below optimal and directly tracking the extreme outdoor dryness (2.7–14.2% RH outdoor); vibration shows pronounced daily cyclic peaks (baseline ~12 mG, peaks to 102 mG) corresponding to afternoon foraging and fanning activity — a perfectly normal summer diurnal schedule; notably, low-frequency sound bins (100–260 Hz) trended slightly down in the second half of the day (−1.1 to −1.8 dB), consistent with the pressure-acoustic anticorrelation pattern seen across the apiary.

  🔬 Correlations & Discoveries

  Pressure vs S_260_350Hz vs S_150_200Hz vs S_350_420Hz (lifespan) | r = -0.999

  Near-perfect negative correlations (r = −0.997 to −0.999) between barometric pressure and the colony-fundamental and queen-transition frequency bands (150–420 Hz) confirm that Hive #2's acoustic output in these biologically significant ranges is tightly coupled to local pressure dynamics — rising pressure suppresses low-frequency colony hum, a healthy adaptive response to fair-weather conditions reducing foraging urgency (Seeley & Tautz 2001).

  📚 Reference: Seeley & Tautz 2001, Ramsey et al. 2020, Woods 1959

  V_80_120Hz vs V_120_160Hz vs V_160_200Hz vs VibrationRMS (14d) | r = +0.905

  The strongest vibration-RMS correlations in the apiary (r = 0.903–0.905 across 80–200 Hz bands) confirm that Hive #2's substrate vibration is dominated by coherent wing-fanning activity; the 26 confirmed cyclic daily peaks over 14 days are a model diurnal thermoregulation and nectar-curing signature consistent with peak summer colony productivity (Tautz 1996).

  📚 Reference: Ramsey et al. 2020, Tautz 1996, Hrncir et al. 2011
  ⚠️ Issue: IAQ accuracy flag remains at 1 (uncertain) — BSEC2 calibration still incomplete; treat IAQ of 184 as directionally useful but not quantitatively reliable.

  ⚠️ Issue: Humidity at 46.3% (24h avg) with a 44.4% daily low — just below the 50–70% optimal brood range; monitor during continued extreme outdoor dryness.

  ⚠️ Issue: Tilt at 8° — above the ideal 0–5° range; routine leveling opportunity at next visit.

  ▹ Action: Continue routine monitoring — no urgent action needed; your Hive #2 is the healthiest colony in the apiary.

  ▹ Action: Monitor IAQ accuracy over the next 24–48 hours — expect resolution to acc=3 as July 2nd syrup processing fully subsides.

  ▹ Action: Keep an eye on in-hive humidity daily lows during hot dry afternoons; if lows approach 40%, assess ventilation management.

  ▹ Action: Level the hive stand to bring tilt toward 0–3° at your next routine visit.
• node_547 healthy Score: 80/100
  📋 Overall Health

  Your Hive #3 is performing well — brood temperature has reached 33.7°C (24h avg), +1.9°C above the all-time avg of 31.8°C, and the 14-day warming trend (29.3→32.3→32.0→32.8°C weekly, now 33.7°C) continues its healthy upward arc, with the latest 12h showing a further +0.8°C rise to 34.2°C — this hive is approaching the ideal 34–36°C brood zone for the first time. Sound spectrum is perfectly stable with all bands within ±0.1 dB of the all-time baseline, confirming a thriving intact colony. Following your July 2nd sugar water feeding (1 gal 50/50), IAQ is 203 (acc=2 — calibrating, readings improving but not yet fully reliable) and gas resistance is 247 kΩ — significantly below the all-time avg of 343 kΩ — consistent with the active July 4th report pattern of ongoing syrup processing combined with brood-nest VOC cycling; humidity averaged 51.7% (24h), comfortably within the 50–70% optimal range, though the daily low hit 31.9% — below the 40% larval desiccation threshold and worth watching on hot afternoons. Vibration is active at 0.0208 g RMS, kurtosis 2.7 (normal), dominant at 80–120 Hz.

  🌅 Diurnal Cycle Patterns

  Hive #3 shows a tight 1.2°C daily oscillation (33.1–34.3°C), a marked tightening from the previous ~1.6°C swing, suggesting continued brood-nest expansion and improved thermoregulatory capacity as the warming trend matures; humidity showed wide daily swings (31.9–61.0%), with the morning low plunging below the 40% desiccation threshold — this is the most humidity-variable hive in the apiary and the pattern is consistent with hot afternoon outdoor dryness driving in-hive RH sharply down; vibration is steady at 19.1 mG throughout the day with no distinct cyclic peaks, and the lifespan correlation between in-hive sound bins and outdoor gas resistance (r = +0.997) confirms this hive's acoustic activity is measurably coupled to regional VOC conditions.

  🔬 Correlations & Discoveries

  GasResistance vs IAQ (lifespan) | r = -0.999

  The near-perfect negative lifespan correlation (r = −0.999) between gas resistance and IAQ is the expected sensor physics relationship — lower resistance (more VOCs) directly produces a higher IAQ score in the BSEC2 algorithm; combined with the July 2nd sugar water feeding and active brood-nest expansion, the currently depressed gas resistance (247 kΩ vs. 343 kΩ avg) reflects benign colony activity (syrup processing, brood pheromones, fanning) with no corroborating temperature or acoustic anomaly, so no concern is warranted.

  📚 Reference: Bosch Sensortec BME688 datasheet, BSEC2 integration guide, Stalidzans et al. 2017

  S_1500_3600Hz vs S_100_150Hz vs GasResistanceOut (lifespan) | r = +0.997

  Strong positive lifespan correlations (r = +0.997) between Hive #3's acoustic bins and outdoor gas resistance suggest that regional VOC events (agricultural activity, atmospheric chemistry) that raise outdoor gas resistance also correlate with elevated colony acoustic output — this hive appears to act as a sensitive environmental 'air sampler,' with forager flight activity and in-hive ventilation acoustically responding to outdoor air quality changes (Cepero et al. 2023).

  📚 Reference: Stalidzans et al. 2017, Cepero et al. 2023, Seeley 1974
  ⚠️ Issue: Humidity daily low hit 31.9% (24h range 31.9–61.0%) — below the 40% larval desiccation threshold; monitor on the next hot dry afternoon to ensure lows remain above 40%.

  ⚠️ Issue: IAQ at 203 (acc=2 — calibrating, not yet fully reliable); gas resistance at 247 kΩ is 28% below the all-time avg of 343 kΩ, most likely reflecting ongoing July 2nd syrup processing and active brood-nest VOC cycling — temperature and acoustics are both normal so no colony stress concern, but expect normalization over 24–48h.

  ▹ Action: Monitor in-hive humidity daily lows during hot dry afternoons — if the sub-40% low recurs, consider whether ventilation management is appropriate for your setup.

  ▹ Action: Monitor IAQ accuracy over the next 24–48 hours — expect it to resolve to acc=3 and trend back toward the all-time avg (~150) as July 2nd syrup processing fully subsides.

  ▹ Action: On your next routine visit within 5–7 days, confirm fresh eggs and solid brood pattern — the continued warming trend and perfectly stable acoustics suggest an actively expanding brood nest approaching peak summer productivity.