Calendar Heatmap
Humidity Levels Calendar
Daily humidity percentage showing seasonal moisture patterns.
Output
Python
import matplotlib.pyplot as plt
import numpy as np
from matplotlib.colors import LinearSegmentedColormap
import matplotlib.patches as mpatches
np.random.seed(201)
days = 365
# Simulate humidity pattern - higher in summer, lower in winter
base_humidity = 55 + 20 * np.sin(2 * np.pi * (np.arange(days) - 80) / 365)
humidity = base_humidity + np.random.normal(0, 10, days)
humidity = np.clip(humidity, 20, 100)
humidity_levels = np.digitize(humidity, bins=[0, 30, 45, 60, 75, 90]) - 1
weeks = 53
data = np.zeros((7, weeks))
for i, val in enumerate(humidity_levels):
week = i // 7
day = i % 7
if week < weeks:
data[day, week] = val
# Temperature palette: cold to hot
colors = ['#1e3a8a', '#3b82f6', '#22d3ee', '#fbbf24', '#f97316', '#dc2626']
cmap = LinearSegmentedColormap.from_list('humidity', colors, N=256)
fig, ax = plt.subplots(figsize=(16, 4), facecolor='#0a0a0f')
ax.set_facecolor('#0a0a0f')
im = ax.imshow(data, cmap=cmap, aspect='auto', vmin=0, vmax=5)
ax.set_yticks(range(7))
ax.set_yticklabels(['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'], fontsize=9, color='#e2e8f0')
ax.set_xticks(range(0, 52, 4))
ax.set_xticklabels(['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec', ''],
fontsize=9, color='#e2e8f0')
ax.set_title('Daily Humidity - Moisture Patterns', fontsize=16, color='white', fontweight='bold', pad=15)
for i in range(8):
ax.axhline(y=i-0.5, color='#1e293b', linewidth=0.5)
for i in range(weeks+1):
ax.axvline(x=i-0.5, color='#1e293b', linewidth=0.5)
ax.tick_params(colors='#e2e8f0', length=0)
for spine in ax.spines.values():
spine.set_visible(False)
legend_elements = [mpatches.Patch(facecolor=c, label=l, edgecolor='#334155')
for c, l in zip(colors, ['<30%', '30-45%', '45-60%', '60-75%', '75-90%', '>90%'])]
ax.legend(handles=legend_elements, loc='upper left', bbox_to_anchor=(0, -0.15), ncol=6,
fontsize=8, facecolor='#1e293b', edgecolor='#334155', labelcolor='white')
avg = np.mean(humidity)
ax.annotate(f'Average Humidity: {avg:.0f}%', xy=(0.98, 1.1), xycoords='axes fraction',
fontsize=11, color='#22d3ee', ha='right', fontweight='bold')
plt.tight_layout()
plt.subplots_adjust(bottom=0.25)
plt.show()
Library
Matplotlib
Category
Time Series
More Calendar Heatmap examples
☕