1 Rain season (all year): 1 January - 31 December; Rain season (Monsoon - NOT Monsoon "Season"): 15 June - 30 September (fixed by NWS - no longer relies on 3-day high DP duration).
5 Estimated amount of water needed to replace the water used by plants and evaporation from the past week. (Negative numbers mean amount of water needed, positive numbers mean excess water is present).
6 Air Quality Index (AQI) data as provided by Arizona Department of Environmental Quality - data not available ~0000-0600 MST.
9 Solar Index represents either an absolute scale of solar energy (W/m²) using the station's recorded maximum or a percentage of computed theoretical solar maximum using the station's location and time of day. These indices differ most when the sun is low on the horizon. The current scale is shown, and will toggle if it or the icon is clicked.
10 Historical average only to day 10 of just the month of April for this station since 4/2006.
11 Historical average rain this season to day 10 of April for this station since 4/2006.
NWS Weather Forecast -
Outlook This Afternoon & Tonight
This Afternoon Sunny
NWS forecast: Sunny. High near 93, with temperatures falling to around 91 in the afternoon. West southwest wind around 10 mph.
Tonight
Clear
NWS forecast: Clear, with a low around 61. Southwest wind 0 to 10 mph.
The most widespread U.S. cold wave was in February of 1899. It was so cold that the Mississippi River froze over its entire length, with ice as thick as two inches even in New Orleans.
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