diff --git a/NEWS.md b/NEWS.md
index 236603d..e3d58dc 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -2,6 +2,8 @@
 
 - Transfered maintainance of package to Jeremy Weiss
 - Timestamp for hourly and daily maximum two-minute sustained wind speeds, `wind_2min_timestamp` now appears in downloaded data
+- Variable type for hourly and daily `wind_2min_timestamp` now is date-time instead of character with correct time zone, `tzone = "America/Phoenix"`
+- Values for hourly `date_datetime` variable now have `tzone = "America/Phoenix"` assigned 
 
 # azmetr 0.2.0
 
diff --git a/R/az_daily.R b/R/az_daily.R
index e9ebcc3..b4b49b1 100644
--- a/R/az_daily.R
+++ b/R/az_daily.R
@@ -89,9 +89,23 @@ az_daily <- function(station_id = NULL, start_date = NULL, end_date = NULL) {
     #convert NAs
     dplyr::mutate(
       dplyr::across(
-        tidyselect::where(is.numeric),
+       tidyselect::where(is.numeric),
         function(x)
-          dplyr::if_else(x %in% c(-999, -9999, -99999, -7999, 999, 999.9, 9999), NA_real_, x))
+          dplyr::if_else(x %in% c(-999, -9999, -99999, -7999, 999, 999.9, 9999), NA_real_, x)
+      )
+    ) %>%
+    dplyr::mutate(
+      wind_2min_timestamp = dplyr::if_else(
+        wind_2min_timestamp == as.character(-99999),
+        NA_character_,
+        wind_2min_timestamp
+      )
+    ) %>%
+    dplyr::mutate(
+      wind_2min_timestamp = lubridate::with_tz(
+        lubridate::parse_date_time(.data$wind_2min_timestamp, orders = "ymdHMSz"),
+        tzone = "America/Phoenix"
+        )
     )
   return(out)
 }
diff --git a/R/az_hourly.R b/R/az_hourly.R
index 18ec1b2..f4e3ac1 100644
--- a/R/az_hourly.R
+++ b/R/az_hourly.R
@@ -91,13 +91,33 @@ az_hourly <- function(station_id = NULL, start_date_time = NULL, end_date_time =
       as.numeric
     )) %>%
     dplyr::filter(.data$meta_station_id != "az99") %>%
-    dplyr::mutate(date_datetime = lubridate::ymd_hms(.data$date_datetime)) %>%
+    dplyr::mutate(
+      date_datetime =
+        lubridate::force_tz(
+          lubridate::ymd_hms(.data$date_datetime),
+          tzone = "America/Phoenix"
+        )
+    ) %>%
     #convert NAs
     dplyr::mutate(
       dplyr::across(
         tidyselect::where(is.numeric),
         function(x)
           dplyr::if_else(x %in% c(-999, -9999, -99999, -7999, 999, 999.9, 9999), NA_real_, x))
+    ) %>%
+    dplyr::mutate(
+      wind_2min_timestamp = dplyr::if_else(
+        wind_2min_timestamp == as.character(-99999),
+        NA_character_,
+        wind_2min_timestamp
+      )
+    ) %>%
+    dplyr::mutate(
+      wind_2min_timestamp =
+        lubridate::with_tz(
+          lubridate::parse_date_time(.data$wind_2min_timestamp, orders = "ymdHMSz"),
+          tzone = "America/Phoenix"
+        )
     )
   return(out)
 }