Locating your position

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§1

Present conditions

Live surface observations at the station. Values are model-analysed to the exact coordinate at roughly 9 km resolution and refreshed hourly.

§2

Terrain & basin analysis

The shape of the land around you governs almost everything else on this page — where air pools, when inversions form, how wind is steered, and whether pollution clears or lingers. We sample real elevation along eight compass transects out to 25 km and read the landform back to you.

Fig. 2.1 — Terrain enclosure rose. Petal reach = highest ground toward that bearing within 25 km; dashed ring = your elevation. Petals outside the ring sit above you (enclosing terrain).

Reading the landform…

Fig. 2.2 — Elevation cross-sections through the station (W–E and N–S).

#	Bearing	Peak elev. ≤25km	Δ vs station	Mean profile	Character

How to read it: a station ringed by higher ground on most bearings is a basin — cold, dense air drains downslope at night and pools, forming temperature inversions that cap the air like a lid and let pollutants accumulate. Open or elevated sites ventilate freely. This is the single most useful lens for interpreting the wind and air-quality sections below.

§3

Wind regime

Direction and strength compiled from the last 7 days plus the coming forecast — enough to reveal the prevailing flow and how terrain from §2 is channeling it.

Fig. 3.1 — Wind rose. Petals point from the source direction; length = frequency, colour = speed band.

Fig. 3.2 — Sustained wind & gusts, hourly.

§4

Air quality

Pollutant concentrations and the US EPA Air Quality Index. Read this alongside §2 and §3: enclosed, low-wind conditions concentrate what you see here.

#	Pollutant	Now	Unit	24h peak	Health note

Fig. 4.1 — US AQI band.

Fig. 4.2 — Hourly trend, past 3 days → next 2 days.

§5

Humidity & moisture

Relative humidity alone is misleading — it swings with temperature. Dew point and vapour-pressure deficit (VPD) describe the actual moisture in the air, how muggy it feels, and how thirstily the atmosphere pulls water from plants and soil.

Fig. 5.1 — Temperature vs dew point. When the two lines meet, the air is saturated (fog / dew / rain).

§6

Climate baseline

Where today sits against the recent local record. Monthly means below are computed from ~5 years of daily reanalysis for this exact point — observed averages rather than official 30-year normals, but the seasonal fingerprint is the same.

Fig. 6.1 — Monthly mean high/low temperature (bars) and mean precipitation (line), ~5-year local average.

#	Month	Mean high	Mean low	Mean daily	Precip

§7

Methods & sources

Everything here is reproducible. Data is fetched live; no figures are pre-baked. Terrain classification is a transparent heuristic, described below so you can judge it yourself.

Weather & surface fields — Open-Meteo Forecast API, ~9 km blended model output; current, hourly (past 7 / next 7 days), daily aggregates. api.open-meteo.com
Air quality — Open-Meteo Air-Quality API (CAMS-based), PM₂.₅/PM₁₀/O₃/NO₂/SO₂/CO and US/European AQI. air-quality-api.open-meteo.com
Elevation — Open-Meteo Elevation API (Copernicus GLO-90 DEM), sampled at 41 points: station + 8 bearings × 5 rings (5–25 km). api.open-meteo.com/v1/elevation
Climate baseline — Open-Meteo Historical (ERA5 reanalysis), daily 2m temperature & precipitation, aggregated to monthly means. archive-api.open-meteo.com
Landform heuristic — enclosure = bearings whose 25 km peak exceeds the station by >120 m; ≥6 → basin, ≥4 → valley/partly enclosed; station >150 m above surroundings → ridge/summit; relief <80 m → plain/plateau. Stagnation susceptibility blends enclosure with local relief. A guide, not a hazard rating.
US AQI — EPA breakpoints; the reported index is the maximum sub-index across pollutants (the "dominant" pollutant sets the number).