As of October 5, 2026, your four-hive apiary is in good shape heading into mid-autumn. Hive #3 and Hive #2 are both closing in on the ideal 93–97°F (34–36°C) brood band, with Hive #3 sitting squarely at a 94.3°F (34.6°C) average — the apiary's thermal standout. Your Iris hive remains the one to watch: a steady 14-day cooling trend has brought its average to 83.4°F (28.5°C), well below brood-rearing territory, and while the colony is clearly warm and active, confirming stores and a laying queen on your next visit would be reassuring. Acoustic baselines for Hive #1, #2, and #3 are still being established after the sensor reinstallations yesterday.
Across all three Apimaye poly hives now showing warming 14-day temperature trends (+9–13°F over the fortnight), the high-R enclosures are compressing diurnal swings to just 2–8°F (1–4°C) internally against a 26°F (14.6°C) outdoor range — a textbook demonstration of how insulated enclosures shift the colony's thermal duty cycle rather than its setpoint, consistent with Mitchell 2016 whole-hive conductance work.
Outdoor temperature swung 50–76°F (10–24.6°C) with humidity 32–61% and a steady barometer (+0.16 hPa/3h), pointing to settled weather; all four hives show consistent daily vibration peaks (1.5–3.1× each hive's own baseline) marking normal October foraging and fanning rhythms, and the poly enclosures are compressing that outdoor swing to a fraction inside each box.
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Iris warning Score: 68/100📋 Overall Health
Your Iris hive is an active, vocal colony — sound is running +4.6 to +8.6 dB above its own all-time baseline across every band, with the 260–350 Hz and 420–500 Hz fundamentals particularly elevated, and vibration kurtosis is a normal 2.6 with a healthy 80–120 Hz dominant peak. The concern is the multi-week temperature trajectory: the 14-day weekly average has slid from 84.4°F (29.1°C) down to 77.9°F (25.5°C) and now 74.7°F (23.7°C), and today's 24h average is 83.4°F (28.5°C) — a warm offset well above the outdoor low of 50°F (10°C) confirming the cluster is producing heat, but the colony has not climbed back toward the 93–97°F (34–36°C) brood band; the most likely explanation remains a broodless or reduced-brood interval (seasonal laying pause, supersedure gap, or post-requeening mating window), and a check for brood, queen, and stores on your next visit would confirm this.
🌅 Diurnal Cycle PatternsThe 24h temperature arc is 80.6–87.2°F (27.0–30.7°C), a swing of 6.6°F (3.7°C), with a clear daily peak and a current falling trend of -2.8°F (-1.6°C) over 12h — active diurnal regulation averaging +7.7°F (+4.3°C) daily oscillation, consistent with a warm cluster cycling with the outdoor temperature in the absence of a full brood furnace. Humidity held a tight 57.8–61.4% (avg 59.9%), well within the healthy 50–70% range, and the partial humidity–temperature coupling (r=-0.47, deseasonalized) reflects normal psychrometric inverse — rising temperature slightly dries the sensor air. The gas heater-scan at 320°C reads 426k Ohms, very close to this hive's all-time average of 424k Ohms, indicating a stable VOC environment; the low-temperature steps (100°C) are strengthening in daily rhythm amplitude (+14% swing rising to +35%) while the dominant rhythm band shifted from 350°C to 100°C between the first and second half of the window — consistent with increased heavy-volatile (propolis, brood pheromone) cycling as the colony adjusts its chemistry heading into autumn, not a distress signal. Sound rhythm is strengthening in the 500–600 Hz and 100–150 Hz bands, and all 10 sound bands show a clear daily cycle — the acoustic baseline established over 5.1 days is the new fingerprint for Iris.
🔬 Correlations & Discoveriessound_level vs temperature_in (14d) | r = +0.34The deseasonalized partial correlation between sound energy and in-hive temperature (r=+0.34, controlling for outdoor temp) shows that Iris's acoustic activity rises modestly when the cluster is warmer — consistent with more heater bees and foragers active when the colony is running a slightly larger thermal footprint, a normal brood-cycle coupling. The 14-day cooling trend (weekly averages declining from 84.4°F to 74.7°F / 29.1°C to 23.7°C) with damping retained is the autumn transition signature described by Harrison et al. 2026 — the setpoint gliding down as brood rearing winds down, not a loss of thermoregulatory capacity.📚 Reference: Stabentheiner, Kovac & Brodschneider 2010, PLoS ONE, Seeley 1985 & 1995, Harrison et al. 2026, J. Exp. Biol.⚠️ Issue: Brood temperature averaging 83.4°F (28.5°C) with a sustained 14-day cooling trend (weekly averages: 84.4→82.9→77.9→74.7°F / 29.1→28.3→25.5→23.7°C) — warm offset above outdoor confirmed, but below the 93–97°F (34–36°C) brood-incubation band for several weeks; consistent with a broodless or reduced-brood interval.▹ Action: On your next routine visit to Iris, check for capped brood, eggs, and a laying queen, and heft the hive to confirm stores are adequate heading into autumn — the strong, broadband acoustic signature suggests an active population, and a brood-and-stores confirmation will clarify whether this is a natural requeening gap or something worth acting on. -
Hive #2 healthy Score: 76/100📋 Overall Health
Your Hive #2 sensor was reinstalled yesterday after ~19 hours out of the hive, so today's figures cover only the ~12 hours since reinstallation — the sound baseline has been fully reset and should be treated as a brand-new starting point with no valid prior comparison. The thermal picture is encouraging: the 24h average is 91.8°F (33.2°C), the 14-day warming trend has brought the colony up +9.1°F (+5.1°C) over the fortnight, and the tight 24h swing of just 2.8°F (1.6°C) in the 90.1–92.9°F (32.3–33.9°C) range shows solid thermal clamping closing in on the ideal 93–97°F (34–36°C) band. Humidity at 64.0% average sits comfortably in the healthy 50–70% range, vibration kurtosis is a normal 3.5, and battery is stable at 4,040 mV.
🌅 Diurnal Cycle PatternsTemperature cycled with 7.1°F (4.0°C) average daily oscillation over 24h, with a current gentle falling trend of -1.3°F (-0.7°C) over 12h — a normal pattern as the colony rests. The gas heater-scan at 320°C reads 35,814 Ohms, which is below this hive's all-time average of 51,572 Ohms, indicating an elevated VOC load; the heater-scan shape shows a smooth decline from 100°C (597k Ω) through to the mid-steps before flattening and slightly recovering at the high-temperature steps (375–400°C) — a shape consistent with an active colony producing brood pheromones and propolis volatiles, all benign October chemistry, and the strong in-hive temperature coupling to gas resistance (partial r=-0.94, deseasonalized) confirms this is a physiology-driven VOC signal, not an external event. The gas low-temperature steps (100–200°C) have dropped -25–32% in band energy, likely reflecting increased heavier-volatile load (propolis terpenes, brood pheromones) as the colony seals up for autumn. The acoustic baseline is being established from scratch (12h of data); the dominant band is 1500–3600 Hz at -37.5 dB with all bands showing a daily cycle — a starting fingerprint only, comparison will be meaningful once several more days accumulate. Vibration is showing a broadband uptick in the second half of the day (+1.3–1.7 dB across all 6 bands), consistent with normal afternoon foraging and fanning activity peaks.
🔬 Correlations & Discoveriestemperature_in vs gas_resistance (14d) | r = -0.94The very strong partial correlation between in-hive temperature and gas resistance (r=-0.94, controlling for outdoor temp) means that as Hive #2's colony warms up — actively rearing brood and expanding metabolic activity — VOC load rises proportionally; this is the expected brood-pheromone and propolis-terpene signature of an expanding autumn colony, not a stress indicator, and it mirrors the 14-day warming trend as the colony consolidates its brood nest.📚 Reference: Maisonnasse et al. 2010, PLoS ONE, Bankova et al. 2000, Apidologie, Seeley 1985 & 1995▹ Action: Monitor brood temperature over the next 3–5 days to confirm the warming trend continues into the 93–97°F (34–36°C) ideal band; acoustic baseline will also begin to take shape over that period — no intervention needed now. -
Hive #1 healthy Score: 75/100📋 Overall Health
Your Hive #1 sensor was reinstalled yesterday after ~19 hours out of the hive, so today's figures cover only the ~12 hours since reinstallation — the sound baseline has been fully reset and is a brand-new starting point. The 24h temperature average is 90.7°F (32.6°C), up from a historical all-time average of 81.5°F (27.5°C), and the 14-day warming trend of +10.7°F (+6.0°C) is a positive sign of a colony actively expanding its brood nest heading into autumn; the 24h swing of 4.4°F (2.4°C) in the 88.2–92.6°F (31.2–33.7°C) range reflects tight thermal clamping within the Apimaye enclosure. Humidity sits at 53.0% average — at the lower end of the healthy 50–70% range but consistent with the dry outdoor ambient (46.8%) ventilating through the screened floor, and the partial humidity–temperature coupling (r=+0.58, deseasonalized) simply reflects the psychrometric inverse in a warming hive, not a drying problem; vibration kurtosis is a normal 2.7 and battery is healthy at 4,154 mV.
🌅 Diurnal Cycle PatternsTemperature cycled with 8.4°F (4.7°C) average daily oscillation and a current falling trend of -2.4°F (-1.4°C) over 12h — normal resting-period cooling. The gas heater-scan at 320°C reads 378,768 Ohms, modestly below this hive's all-time average of 478,324 Ohms, with the heater-scan shape showing a smooth monotone decline from 100°C (41,670k Ω) to 400°C (178k Ω) — a clean VOC-dominated profile typical of propolis, brood pheromones, and honey-ripening activity; low-temperature steps (100–200°C) have dropped ~18–20% in band energy over the window, consistent with seasonally increasing heavy-volatile (propolis terpene) load as the colony prepares for autumn. The partial gas–temperature coupling (r=-0.82) confirms this is colony physiology, not an environmental event. The sound baseline is being established (12h post-reset); the dominant band is 260–350 Hz at -17.3 dB with notably energetic 200–260 Hz (-7.2 dB) and 260–350 Hz (-9.0 dB) bands in the latest reading — a rich colony fundamental hum — though no baseline comparison is yet valid. Vibration is healthy with dominant 80–120 Hz energy at -10.3 dB, close to its all-time average of -10.5 dB, and daily peaks 1.5× the baseline confirm a normal foraging rhythm.
🔬 Correlations & Discoveriesgas_resistance vs temperature_in (14d) | r = -0.82The strong partial gas–temperature correlation (r=-0.82, controlling for outdoor temp) in Hive #1 reflects the colony's metabolic VOC output rising in step with brood-nest warming over the 14-day warming trend: more brood pheromones (E-β-ocimene from young larvae), more propolis terpenes from autumn sealing activity, and more honey-ripening volatiles all register as falling resistance on the MOX plate — a signature of a healthy, expanding colony, not a cause for concern.📚 Reference: Maisonnasse et al. 2009, Apidologie, Bankova et al. 2000, Apidologie, Human et al. 2006, Naturwissenschaften▹ Action: Monitor brood temperature over the next 3–5 days to confirm it continues its warming trend into the 93–97°F (34–36°C) ideal range; acoustic baseline will become meaningful after a few more days of accumulation — all looks positive. -
Hive #3 warning Score: 74/100📋 Overall Health
Your Hive #3 is the apiary's thermal leader — the 24h average is 94.3°F (34.6°C), squarely in the ideal 93–97°F (34–36°C) brood band, and the 14-day warming trend of +13.0°F (+7.2°C) confirms sustained brood-nest expansion. The sensor was reinstalled yesterday after ~19 hours out of the hive; the sound baseline has been fully reset and today's readings are a fresh starting point only. Humidity at 62.0% average is healthy; battery drained -122 mV over 24h to 3,996 mV — still above critical but the fastest drain in the apiary this period and worth keeping an eye on over the next few days.
🌅 Diurnal Cycle PatternsTemperature cycled with a notably wide 13.9°F (7.7°C) average daily oscillation (range 91.6–97.3°F / 33.1–36.3°C), larger than the other poly hives — the sensor sits in box 2 of a 4-box stack, and in a well-populated four-deep hive the second box sits near the upper edge of the brood cluster where thermal excursions are wider as the colony actively fans and heats. The gas heater-scan at 320°C reads 69,527 Ohms, below this hive's all-time average of 109,015 Ohms, and the per-step shape is notable: resistance drops steeply from 100°C (2,097k Ω) through to 350°C (60k Ω), then slightly recovers at 375–400°C — a low-temperature-step-dominated profile, and those 100–150°C steps have strengthened dramatically in daily rhythm (+49% and +43% band energy shift, with swings doubling in the second half of the window); this is consistent with increasingly heavy propolis terpene and brood-pheromone volatiles as Hive #3 ramps up autumn colony-sealing activity, all benign. The acoustic baseline is being established (13h post-reset); the dominant band is 260–350 Hz at -7.5 dB — the colony fundamental hum — with strong energy also at 420–500 Hz (-10.0 dB) and 600–800 Hz (-13.1 dB); these are starting fingerprint values only. Vibration is robust at 0.0203 g average (matching the all-time average of 0.0202 g exactly), dominant 80–120 Hz at -8.5 dB (all-time -8.7 dB), and daily peaks 1.8× baseline confirm a healthy, active foraging rhythm with kurtosis of 2.6.
🔬 Correlations & Discoveriestemperature_in vs gas_resistance (14d) | r = -0.56The deseasonalized in-hive temperature–gas resistance coupling (r=-0.56) in Hive #3 — corroborated by the humidity–gas resistance link (r=-0.59) — shows that as this colony heats and humidifies its brood nest, VOC production rises proportionally; the dramatic strengthening of the 100–150°C heater-scan rhythm (swing doubling in the second half of the window) points to increasing emission of heavy terpene and brood volatiles consistent with an actively expanding, autumn-sealing colony, not any pathological process.📚 Reference: Maisonnasse et al. 2010, PLoS ONE, Bankova et al. 2000, Apidologie, Eouzan et al. 2019, PLoS ONE⚠️ Issue: Battery drained -122 mV in 24h to 3,996 mV — the fastest single-day drain recorded for this hive; still above the all-time low of 3,936 mV but worth monitoring over the next 2–3 days to confirm it stabilizes or recovers with solar charging.▹ Action: Keep an eye on Hive #3's battery over the next 2–3 days — if it continues draining below ~3,960 mV without recovering, it may be worth checking the solar connection on your next visit. On your next routine inspection, confirm the brood nest is well-provisioned with capped honey stores for winter; the strong 94.3°F (34.6°C) brood temperature and active vibration are exactly what you want to see in early October.