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 17 of just the month of February for this station since 4/2006.
11 Historical average rain this season to day 17 of February for this station since 4/2006.
NWS Weather Forecast -
Outlook Washington's Birthday & Tonight
Washington's Birthday Sunny
NWS forecast: Sunny. High near 74, with temperatures falling to around 72 in the afternoon. West southwest wind around 5 mph.
Tonight
Clear
NWS forecast: Clear. Low around 49, with temperatures rising to around 51 overnight. Southeast wind 0 to 5 mph.
Hurricanes are classified into five categories, based on their wind speeds and potential to cause damage.
* Category One -- Winds 74-95 miles per hour
* Category Two -- Winds 96-110 miles per hour
* Category Three -- Winds 111-130 miles per hour
* Category Four -- Winds 131-155 miles per hour
* Category Five -- Winds greater than 155 miles per hour
