diff --git a/packages/react-aria-components/test/NumberField.test.js b/packages/react-aria-components/test/NumberField.test.js
index 0a3363652c6..7b7d9954079 100644
--- a/packages/react-aria-components/test/NumberField.test.js
+++ b/packages/react-aria-components/test/NumberField.test.js
@@ -256,6 +256,48 @@ describe('NumberField', () => {
     expect(numberfield).not.toHaveAttribute('data-invalid');
   });
 
+  it('should clear validation errors when a controlled value is updated externally', async () => {
+    function ControlledNumberField() {
+      let [value, setValue] = useState(1);
+
+      return (
+        <form data-testid="form">
+          <NumberField
+            value={value}
+            onChange={setValue}
+            validationBehavior="native"
+            isRequired
+            validate={v => (v % 2 ? 'Odd values are invalid' : null)}>
+            <Label>Value</Label>
+            <Group>
+              <Button slot="decrement">-</Button>
+              <Input />
+              <Button slot="increment">+</Button>
+            </Group>
+            <FieldError />
+          </NumberField>
+          <Button onPress={() => setValue(10)}>Set to 10</Button>
+        </form>
+      );
+    }
+
+    let {getByRole, getByTestId} = render(<ControlledNumberField />);
+    let input = getByRole('textbox');
+
+    act(() => {
+      getByTestId('form').checkValidity();
+    });
+
+    let describedBy = input.getAttribute('aria-describedby');
+    expect(describedBy).toBeTruthy();
+    expect(document.getElementById(describedBy)).toHaveTextContent('Odd values are invalid');
+
+    await user.click(getByRole('button', {name: 'Set to 10'}));
+
+    expect(input).not.toHaveAttribute('aria-describedby');
+    expect(input).not.toHaveAttribute('aria-invalid');
+  });
+
   it('supports pasting value in another numbering system', async () => {
     let {getByRole, rerender} = render(<TestNumberField />);
     let input = getByRole('textbox');
diff --git a/packages/react-aria-components/test/TextField.test.js b/packages/react-aria-components/test/TextField.test.js
index 79355365192..61ff62213c4 100644
--- a/packages/react-aria-components/test/TextField.test.js
+++ b/packages/react-aria-components/test/TextField.test.js
@@ -11,10 +11,11 @@
  */
 
 import {act, pointerMap, render} from '@react-spectrum/test-utils-internal';
+import {Button} from '../src/Button';
 import {FieldError} from '../src/FieldError';
 import {Input} from '../src/Input';
 import {Label} from '../src/Label';
-import React from 'react';
+import React, {useState} from 'react';
 import {Text} from '../src/Text';
 import {TextArea} from '../src/TextArea';
 import {TextField, TextFieldContext} from '../src/TextField';
@@ -266,6 +267,103 @@ describe('TextField', () => {
       expect(input).not.toHaveAttribute('aria-describedby');
     });
 
+    it('should clear validation errors when a controlled value is updated externally', async () => {
+      let Component = component;
+      function ControlledTextField() {
+        let [value, setValue] = useState('');
+
+        return (
+          <form data-testid="form">
+            <TextField value={value} onChange={setValue} validationBehavior="native" isRequired>
+              <Label>Test</Label>
+              <Component />
+              <FieldError />
+            </TextField>
+            <Button onPress={() => setValue('Devon')}>Set to Devon</Button>
+          </form>
+        );
+      }
+
+      let {getByRole, getByTestId} = render(<ControlledTextField />);
+      let input = getByRole('textbox');
+
+      act(() => {
+        getByTestId('form').checkValidity();
+      });
+
+      let describedBy = input.getAttribute('aria-describedby');
+      expect(describedBy).toBeTruthy();
+      expect(document.getElementById(describedBy)).toHaveTextContent('Constraints not satisfied');
+
+      await user.click(getByRole('button', {name: 'Set to Devon'}));
+
+      expect(input).not.toHaveAttribute('aria-describedby');
+      expect(input).not.toHaveAttribute('aria-invalid');
+    });
+
+    it('should show validation errors when a controlled value is updated externally to exceed maxLength', async () => {
+      let Component = component;
+      function ControlledTextField() {
+        let [value, setValue] = useState('');
+
+        return (
+          <form data-testid="form">
+            <TextField value={value} onChange={setValue} validationBehavior="native" maxLength={10}>
+              <Label>Test</Label>
+              <Component />
+              <FieldError />
+            </TextField>
+            <Button onPress={() => setValue('ABCDEFGHTIJKLM')}>Set too long</Button>
+          </form>
+        );
+      }
+
+      let {getByRole} = render(<ControlledTextField />);
+      let input = getByRole('textbox');
+      expect(input).not.toHaveAttribute('aria-describedby');
+
+      await user.click(getByRole('button', {name: 'Set too long'}));
+
+      let describedBy = input.getAttribute('aria-describedby');
+      expect(describedBy).toBeTruthy();
+      expect(document.getElementById(describedBy)).toHaveTextContent(
+        'Please shorten this text to 10 characters or less'
+      );
+      expect(input).toHaveAttribute('aria-invalid');
+    });
+
+    it('should show validation errors when a controlled value is updated externally to be below minLength', async () => {
+      let Component = component;
+      function ControlledTextField() {
+        let [value, setValue] = useState('');
+
+        return (
+          <form data-testid="form">
+            <TextField value={value} onChange={setValue} validationBehavior="native" minLength={10}>
+              <Label>Test</Label>
+              <Component />
+              <FieldError />
+            </TextField>
+            <Button onPress={() => setValue('ABC')}>Set too short</Button>
+          </form>
+        );
+      }
+
+      let {getByRole} = render(<ControlledTextField />);
+      let input = getByRole('textbox');
+
+      expect(input).not.toHaveAttribute('aria-describedby');
+
+      await user.click(getByRole('button', {name: 'Set too short'}));
+
+      let describedBy = input.getAttribute('aria-describedby');
+      expect(describedBy).toBeTruthy();
+      expect(document.getElementById(describedBy)).toHaveTextContent(
+        'Please lengthen this text to 10 characters or more'
+      );
+      expect(input).toHaveAttribute('aria-invalid');
+    });
+
     it('should render the id attribute only on the input element', async () => {
       let {getAllByTestId, getByRole} = render(<TestTextField id="name" input={component} />);
       let outerEl = getAllByTestId('text-field-test');
diff --git a/packages/react-aria/src/datepicker/useDateField.ts b/packages/react-aria/src/datepicker/useDateField.ts
index 00ecdeabcea..b16963eb9a7 100644
--- a/packages/react-aria/src/datepicker/useDateField.ts
+++ b/packages/react-aria/src/datepicker/useDateField.ts
@@ -100,14 +100,17 @@ export function useDateField<T extends DateValue>(
   });
 
   let valueOnFocus = useRef<DateValue | null>(null);
+  let isFocused = useRef(false);
   let {focusWithinProps} = useFocusWithin({
     ...props,
     onFocusWithin(e) {
       valueOnFocus.current = state.value;
+      isFocused.current = true;
       props.onFocus?.(e);
     },
     onBlurWithin: e => {
       state.confirmPlaceholder();
+      isFocused.current = false;
       if (state.value !== valueOnFocus.current) {
         state.commitValidation();
       }
@@ -178,6 +181,7 @@ export function useDateField<T extends DateValue>(
   useFormValidation(
     {
       ...props,
+      isFocusWithin: () => isFocused.current,
       focus() {
         focusManager.focusFirst();
       }
diff --git a/packages/react-aria/src/form/useFormValidation.ts b/packages/react-aria/src/form/useFormValidation.ts
index 5a26df343a4..0eab2169aac 100644
--- a/packages/react-aria/src/form/useFormValidation.ts
+++ b/packages/react-aria/src/form/useFormValidation.ts
@@ -12,7 +12,7 @@
 
 import {FormValidationState} from 'react-stately/private/form/useFormValidationState';
 
-import {getEventTarget} from '../utils/shadowdom/DOMFunctions';
+import {getActiveElement, getEventTarget} from '../utils/shadowdom/DOMFunctions';
 import {RefObject, Validation, ValidationResult} from '@react-types/shared';
 import {setInteractionModality} from '../interactions/useFocusVisible';
 import {useEffect, useRef} from 'react';
@@ -23,6 +23,12 @@ type ValidatableElement = HTMLInputElement | HTMLTextAreaElement | HTMLSelectEle
 
 interface FormValidationProps<T> extends Validation<T> {
   focus?: () => void;
+  /**
+   * Whether the field, or any part of a composite field, is currently focused.
+   * Used to detect external value changes in complex components where
+   * the validated input is not the visually active element.
+   */
+  isFocusWithin?: boolean | (() => boolean);
 }
 
 export function useFormValidation<T>(
@@ -30,7 +36,8 @@ export function useFormValidation<T>(
   state: FormValidationState,
   ref: RefObject<ValidatableElement | null> | undefined
 ): void {
-  let {validationBehavior, focus} = props;
+  let {validationBehavior, focus, isFocusWithin} = props;
+  let lastValue = useRef<string | undefined>(undefined);
 
   // This is a useLayoutEffect so that it runs before the useEffect in useFormValidationState, which commits the validation change.
   useLayoutEffect(() => {
@@ -40,9 +47,28 @@ export function useFormValidation<T>(
       'setCustomValidity' in ref.current &&
       !ref.current.disabled
     ) {
-      let errorMessage = state.realtimeValidation.isInvalid
-        ? state.realtimeValidation.validationErrors.join(' ') || 'Invalid value.'
-        : '';
+      let currentValue = ref.current.value;
+      let valueChanged = lastValue.current !== undefined && lastValue.current !== currentValue;
+      lastValue.current = currentValue;
+
+      // Clear custom validity to accurately read the raw DOM state.
+      ref.current.setCustomValidity('');
+
+      let validityDetails = getValidity(ref.current);
+      let isProgrammaticViolation = validityDetails.tooLong || validityDetails.tooShort;
+
+      // Use native validity to block form submission if constraints fail.
+      // Fall back to React state for server/custom errors.
+      let errorMessage = '';
+      if (isProgrammaticViolation) {
+        if (validityDetails.tooLong) {
+          errorMessage = `Please shorten this text to ${ref.current.getAttribute('maxlength')} characters or less (you are currently using ${ref.current.value.length} characters).`;
+        } else if (validityDetails.tooShort) {
+          errorMessage = `Please lengthen this text to ${ref.current.getAttribute('minlength')} characters or more (you are currently using ${ref.current.value.length} characters).`;
+        }
+      } else if (state.realtimeValidation.isInvalid) {
+        errorMessage = state.realtimeValidation.validationErrors.join(' ') || 'Invalid value.';
+      }
       ref.current.setCustomValidity(errorMessage);
 
       // Prevent default tooltip for validation message.
@@ -51,8 +77,22 @@ export function useFormValidation<T>(
         ref.current.title = '';
       }
 
-      if (!state.realtimeValidation.isInvalid) {
-        state.updateValidation(getNativeValidity(ref.current));
+      let nativeValidity = getNativeValidity(ref.current);
+      if (!state.realtimeValidation.isInvalid || isProgrammaticViolation) {
+        state.updateValidation(nativeValidity);
+      }
+
+      // Commit validation immediately if the value changes while the field is unfocused.
+      // This clears stale errors or displays programmatic constraint violations.
+      let isFocused =
+        (typeof isFocusWithin === 'function' ? isFocusWithin() : isFocusWithin) ??
+        (typeof document !== 'undefined' && getActiveElement() === ref.current);
+
+      if (valueChanged && !isFocused) {
+        let isNowValid = !nativeValidity.isInvalid && !state.realtimeValidation.isInvalid;
+        if (isNowValid || isProgrammaticViolation) {
+          state.commitValidation();
+        }
       }
     }
   });
@@ -141,6 +181,26 @@ function getValidity(input: ValidatableElement) {
   // The native ValidityState object is live, meaning each property is a getter that returns the current state.
   // We need to create a snapshot of the validity state at the time this function is called to avoid unpredictable React renders.
   let validity = input.validity;
+
+  // Polyfill: Native DOM ignores programmatic maxLength violations.
+  let tooLong = validity.tooLong;
+  let maxLength = input.getAttribute('maxlength');
+  if (maxLength !== null && input.value.length > parseInt(maxLength, 10)) {
+    tooLong = true;
+  }
+
+  // Polyfill: Native DOM ignores programmatic minLength violations.
+  // Note: minLength only applies if the value is not empty.
+  let tooShort = validity.tooShort;
+  let minLength = input.getAttribute('minlength');
+  if (
+    minLength !== null &&
+    input.value.length > 0 &&
+    input.value.length < parseInt(minLength, 10)
+  ) {
+    tooShort = true;
+  }
+
   return {
     badInput: validity.badInput,
     customError: validity.customError,
@@ -148,19 +208,33 @@ function getValidity(input: ValidatableElement) {
     rangeOverflow: validity.rangeOverflow,
     rangeUnderflow: validity.rangeUnderflow,
     stepMismatch: validity.stepMismatch,
-    tooLong: validity.tooLong,
-    tooShort: validity.tooShort,
+    tooLong: tooLong,
+    tooShort: tooShort,
     typeMismatch: validity.typeMismatch,
     valueMissing: validity.valueMissing,
-    valid: validity.valid
+    valid: validity.valid && !tooLong && !tooShort
   };
 }
 
 function getNativeValidity(input: ValidatableElement): ValidationResult {
+  let validityDetails = getValidity(input);
+  let isInvalid = !validityDetails.valid;
+
+  let validationMessage = input.validationMessage;
+
+  // Fallback for our polyfills since the native DOM doesn't generate a message for programmatic errors.
+  if (isInvalid && !validationMessage) {
+    if (validityDetails.tooLong) {
+      validationMessage = `Please shorten this text to ${input.getAttribute('maxlength')} characters or less (you are currently using ${input.value.length} characters).`;
+    } else if (validityDetails.tooShort) {
+      validationMessage = `Please lengthen this text to ${input.getAttribute('minlength')} characters or more (you are currently using ${input.value.length} characters).`;
+    }
+  }
+
   return {
-    isInvalid: !input.validity.valid,
-    validationDetails: getValidity(input),
-    validationErrors: input.validationMessage ? [input.validationMessage] : []
+    isInvalid: isInvalid,
+    validationDetails: validityDetails,
+    validationErrors: validationMessage ? [validationMessage] : []
   };
 }
 
diff --git a/packages/react-aria/src/select/HiddenSelect.tsx b/packages/react-aria/src/select/HiddenSelect.tsx
index fee8d126111..4317da103e7 100644
--- a/packages/react-aria/src/select/HiddenSelect.tsx
+++ b/packages/react-aria/src/select/HiddenSelect.tsx
@@ -96,6 +96,7 @@ export function useHiddenSelect<T, M extends SelectionMode = 'single'>(
   useFormValidation(
     {
       validationBehavior,
+      isFocusWithin: state.isFocused,
       focus: () => triggerRef.current?.focus()
     },
     state,